Re: Réf. : KR> Spitfire

[DENE COLLETT (SA)]

Serge,
It is highly likely that that sea fury is the one based here in Port
Elizabeth now. It belongs to Stu Davidson of Seaview Aerobatics amongst
something like 15 other aircraft including a L29 Delphin jet and a scale
Spitfire.
Regards
Dene Collett
KR2S builder
Freelance whisper assembler
South Africa
mailto: dene.coll...@telkomsa.net

- Original Message -
From: Serge VIDAL 
To: KRnet 
Sent: Monday, October 10, 2005 10:37 AM
Subject: Réf. : KR> Spitfire


I was lucky enough to share my hangar for a few months with a couple olt
timer aircraft, including a pristine Spitfire. That was at Rand Airport,
South Africa. The Spitfire flew reasonably often, and that was quite an
inspiration. Sadly, the aircraft was sold and flown to a new base, and the
new owner was killed when he crashed it a few weeks later. I think that
was the last example flying in South Africa.

We also had a Sea Fury based there for a while. That one was not as nice
looking as the Spitfire. It was a monster, with a huge engine, very apt at
converting a lot of fuel into a tremendous amount of noise!

Serge Vidal
KR2 "Kilimanjaro Cloud"
Paris, France





Frank Ross 

Envoyé par : krnet-bounces+serge.vidal=sagem@mylist.net
2005-10-09 16:17
Veuillez répondre à KRnet
Remis le : 2005-10-09 16:17


Pour :  KRnet 
cc :(ccc : Serge VIDAL/DNSA/SAGEM)
Objet : KR> Spitfire



When was the last time you saw a Spitfire fly over
your neighborhood? I just did.
Went for a walk and heard a plane approaching.
Civilian planes fly over our bases here all the time,
so I wasn't surprised, but did look because there was
just something about the sound. It was unmistakenly a
Spitfire! Flying West to East. Beautiful!
There are a fair number of Spits restored and flying
in Britain but it is a real treat to see one fly over
just out for a spin and enjoying a great plane on a
great day.
Thought you would like to know.
Frank
PS, KR, KR, KR. Okay, that's the KR part.

Frank Ross,
EAA Chapter 35,
San Geronimo, TX
RAF Lakenheath, Suffolk, England, UK
Visit my photo album at:
http://photos.yahoo.com/alamokr2




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Re: Réf. : Re: Réf. : Re: Réf. : KR> Carb Ice

[DENE COLLETT (SA)]

Serge
Well now that you ask, there is that huge knot in the main spar botom cap
and the three mild steel wing attach fittings but those are all minor things
not to worry about. LOL .Seriously, that plane was built pretty solidly
although a bit rough around the edges. There were a few things that I would
have changed but more for aesthetic reasons than anything else. Nothing else
comes to mind at the moment.
Regards
Dene Collett
KR2S builder
Freelance whisper assembler
South Africa
mailto: dene.coll...@telkomsa.net

- Original Message -
From: Serge VIDAL 
To: KRnet 
Sent: Monday, October 03, 2005 11:19 AM
Subject: Réf. : Re: Réf. : Re: Réf. : KR> Carb Ice

KR> Turnbuckles

[DENE COLLETT (SA)]

Surge
Just a guess here but try the saling supply shops. I can't remember what
they looked like but what you describe is something like what I saw at a
local marine supply storethe other day.
Regards
Dene Collett
KR2S builder
Freelance whisper assembler
South Africa
mailto: dene.coll...@telkomsa.net

- Original Message -
From: Serge VIDAL 
To: KRnet 
Sent: Wednesday, September 28, 2005 3:50 PM
Subject: KR> Turnbuckles


> I have a couple of control turnbuckles on my KR2 that are bright metal
> (stainless steel? chrome plated?). I would like to buy a couple more, to
> use the barrels as aileron pushrods. Now, all I can find in Aircraft
> Spruce's catalogue is brass turnbucles. Any ideas?
>
> Serge Vidal
> KR2 "Kilimanjaro Coud"
> Paris, France
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>

Re: Réf. : KR> Carb Ice

[DENE COLLETT (SA)]

Serge, WEC did ice once that I know of. Motor ran rough for a bit but was
sorted out with WOT and change of altitude I think (long time ago).
Regards
Dene Collett
KR2S builder
Freelance whisper assembler
South Africa
mailto: dene.coll...@telkomsa.net

- Original Message -
From: Serge VIDAL 
To: ; KRnet 
Sent: Thursday, September 29, 2005 7:35 PM
Subject: Réf. : KR> Carb Ice


OK. I would not like anybody to get me wrong on this issue, and be accused

KR> Nose Gear question

[DENE COLLETT (SA)]

Hi Pat
Well, there is nothing special about my gear except that it will retract.
The mains will be mounted to the wing attach fittings on the wing stubs and
retract towards the fuz with gear doors closing behind them. My nose wheel,
sorry make that training wheel, will also retract into a hole cut between
the
spar and 1/4" floor ply carrying the rudder pedals. The leg will be hidden
in a recess in a foam extension of the fuz much like Mark L's.There will
also be a door closing behind the wheel. The whole system will be
hydraulically actuated by an electric/hydraulic pump. As a backup the system
will be fitted with a manual bypass valve located in a convenient spot that
can be opened if the pump fails. This will allow fluid to flow directly from
the one side of the rams to the other without passing through the pump.
Extension will be assisted by regular automotive gas struts and gravity.
In short, if the pump fails: slow down, open bypass valve, gear extends and
locks and is not able to be retracted without hydraulic pressure.
The automatic extension system is merely a pressure switch contact hooked to
the or another pitot line in
parallel to the gear down contact with an interlock preventing simultaneous
selection of gear up(manually after take off) and gear down(automatic before
sufficient speed has been reached).
So far I have the main gear legs welded up and am working(slowly) on the
retract system. I will only be able to build the nose gear once I have an
engine mount for the corvair motor that I also don't have YET. Don't hold
your breath, this could take a while.For a look at what I will be doing,
take a look at the "infinity" aftermarket retract system they sell for the
canard range of aircraft. My retract system will work with small hydraulic
rams just like theirs. Now to find someone who can make me two custom
hydraulic rams.
Regards
Dene Collett
KR2S builder
Freelance whisper assembler
South Africa
mailto: dene.coll...@telkomsa.net

- Original Message -
From: patrusso 
To: KRnet 
Sent: Monday, September 19, 2005 11:44 PM
Subject: Re: KR> Nose Gear question


> Dene
> Can you share the how to build and tuck the nose wheel bit with us?
> Pat
> - Original Message -
>
> > I will wimp out and fit mine with a "training wheel" but nobody will
know
> > anyway. It will be tucked away inside the fuz in flight with the mains.
> >
>
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KR> taildraggers revisited

[DENE COLLETT (SA)]

KR heads, My words weren't even cold when I got the following news.
The first customer built Whisper motor glider which was built in record time
was groundlooped during taxi testing. The test pilot got airborne
unexpectedly, got a fright, cut power, stalled it and came down hard. Once
sideways, its leading wheen rim broke and the gear dug in. the gear leg was
ripped off, wing tip damaged and the prop broken.
Lucky the Whisper is a strong little plane, it was repaired in record time
and is apparently undergoing further "taxi testing".
Regards
Dene Collett
KR2S builder
Freelance whisper assembler
South Africa
mailto: dene.coll...@telkomsa.net

KR> Friday market day

[DENE COLLETT (SA)]

This one is for the South Africans amongst us.
I have decided to splash out on a dragonfly canopy for my project so my
standard bubble canopy is up for sale. It has a frame, roll over bar and
strong points for the attachment of canopy latches. It has bought new and
has never been more than two metres above the ground.
My e-mail address is below.
Thanks
Regards
Dene Collett
KR2S builder
Freelance whisper assembler
South Africa
mailto: dene.coll...@telkomsa.net

KR> Nose Gear question

[DENE COLLETT (SA)]

As they say, "There are only two types of taildragger pilots, those that
have ground looped ond those that are going to in the future"
I am sorry but it has taken me ten years of skimping here and there to rake
together enough money to get my plane where it is today. I have seen too
many reports of guys spending years building their pride and joy only to
have it trashed before the first flight due to a ground loop.
I will wimp out and fit mine with a "training wheel" but nobody will know
anyway. It will be tucked away inside the fuz in flight with the mains.
Now I hear someone saying that one day I will forget to extend them, maybe
but it will be fitted with an automatic system like the Lancair that extends
the gear when the speed drops below a certain level.
Different strokes for different folks I guess. At least he built it and IS
flying it, unlike some of us myself included.
Mark, you can park your trycycle next to mine anyday!
Regards
Dene Collett
KR2S builder
Freelance whisper assembler
South Africa
mailto: dene.coll...@telkomsa.net

- Original Message -

> (Best solution:  Dump the training gear)
>
> Steve Jacobs
> Zambia
>
>
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KR> hurricane

[DENE COLLETT (SA)]

Please tell me that wasn't a KR lying upside down on the tarmac that I saw
on the news tonight!!
Regards
Dene Collett
KR2S builder
Freelance whisper assembler
South Africa
mailto: dene.coll...@telkomsa.net

KR> glassing wings etc

[DENE COLLETT (SA)]

Here we can get a biaxial glass of 410 grams/sqm that is actually two layers
of unidirectional glass lightly stitched together at +/- 45 deg as it comes
off the roll. No cutting at 45 deg and no overlaps (high spots) to contend
with when fairing. Just lay the roll at the root and run it to the tip. A
sacrifical layer of deck cloth over that will take care of most pinholes and
give a surface that needs very little filling.
TIP: Just after doing the layup, sprinkle a generous amount of micro over
the entire surface and gently rub it in to the weave. If your hands start to
drag then you have too little micro. Be sure to wear gloves for this part.
Allow to cure and sand away the excess micro and into the deck cloth for a
good finish.
As the famous saying goes: " Your milage may vary"
Regards
Dene Collett
KR2S builder
Freelance whisper assembler
South Africa
mailto: dene.coll...@telkomsa.net

KR> Vision LSA alternative

[DENE COLLETT (SA)]

Try the Whisper motor glider at 5 litres/hour at 105km/h! (don't think it
makes LSA though)

Regards
Dene Collett
KR2S builder
freelance whisper assembler
South Africa
mailto: dene.coll...@telkomsa.net

- Original Message -
From: Wheeler Express Builder 
To: KRnet 
Sent: Wednesday, August 17, 2005 9:53 PM
Subject: Re: KR> Vision LSA alternative


> now that gas is hitting $3.00 a gallon.  Five gph is starting to sound
real
> good.
>
> Bob
>
>
>
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>

Re: Réf. : Re: KR> Continental ----Serge

[DENE COLLETT (SA)]

Serge, I told Rob about your wings not conforming with the RAF48 plots. He
told me to tell you that he used the ROB48 airfoil in stead which works much
better.
Regards
Dene Collett
KR2S builder
South Africa
mailto: dene.coll...@telkomsa.net

KR> RETRACT ARTICLE

[DENE COLLETT (SA)]

Hi guys/gals
I am trying to identify an article that appeared in a magazine in April
1982. The article refers to the construction of a manual tricycle retract
system for a KR. i only have a very bad copy of one page showing the
workings of the system which looks much like Ron Eason's (main gear anyway).
Can anybody perhaps identify what mag the article appeared in and better
yet, if someone has the article, could they scan it and send it to me
please.
Thanks
Regards
Dene Collett
KR2S builder
South Africa
mailto: dene.coll...@telkomsa.net

KR> ailerons

[DENE COLLETT (SA)]

Hi Guys
After reading the posts regarding aileron spars and the like, I thought it
appropriate to let you know of another way to do it without using wood at
all. As some of you know, I am involved with building Whisper motor gliders
and as the designer is a friend of mine I was lucky enough to see how he
built his. The wing of the Whisper is built much like the KR except that it
has only one really strong glass spar. Where the ailerons were cut out all
he did was 1) before glassing the wings he marked the aileron cutouts on the
foam with a fine marker. 2) Placed a strip of peelply about 1.75" wide
centred on these cutlines. 3) after wingskins have cured the ailerons were
cut out on these cutlines leaviing half the peelply on the wing and the
other half on the aileron. 4) The peelply was then ripped out takink with it
most of the foam between the skins to the depth of the peelply. 5) After
sanding the foam smooth the "C" section was then glassed with BID at 45deg.
6) The upper skin which was to receive the extruded piano hinge was
thickened by adding extra layers to the top skin inside the "C" section
untill the hinge no longer protruded above the wing contour. After curing
the hinge was fastened with countersunk AN rivets (I think). The aileron was
given the same treatment.  To remove the aileron, the pins were made
removeable.
Since the ailerons on the Whisper are only slightly longer than the KR's and
the prototype Whisper has by now clocked up around 200 hours I see no reason
why this method can not be adopted on the KR, mine will be done in this way.
Comments?? I do have a picture here somewhere if anybody is interested.
Regards
Dene Collett
KR2S builder
South Africa
mailto: dene.coll...@telkomsa.net

- Original Message -
From: Lee Van Dyke 
To: KRnet 
Sent: Friday, July 15, 2005 7:18 AM
Subject: KR> ailerons


> Netters
>
> Per the plans, there is no glass wrapped around the rear portion of the
wing sealing the wood for the aileron.  Am I correct???.  Has anybody had a
problem with that wood coming loose fron the foam??
> If you were me and wanted to secure the wood a little better, what would
be the easiest and best way to get it done???
>
> Lee Van Dyke
> Mesa AZ
> l...@vandyke5.com
> ___
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KR> test

[DENE COLLETT (SA)]

Regards
Dene Collett
KR2S builder
South Africa
mailto: dene.coll...@telkomsa.net
mailto: dene.coll...@telkomsa.net

KR> Whisper assembly service

[DENE COLLETT (SA)]

Hi Murray
My name is Dene Collett. I was asked by Russell Phillips to give you a quote
to
assemble your Whisper kit for you to approximately structurally complete.
That would be the two fuselage halves bonded together, the landing gear and
bulkheads bonded, the fin spars bonded in as well as the right fin skin. The
wing carry through spar bonded in place and the wings rigged properly. The
firewall and strengthening laminations all bonded in as well as the
stainless steel covering on the forward side.
My price for the above is ZAR 22,000. For any queries I can be contacted at
home on tel:
2741 3792394 or on cell +27845805003 .
I look forward to hearing from you soon.
Regards
Dene Collett
KR2S builder
South Africa
mailto: dene.coll...@telkomsa.net

KR> sorry

[DENE COLLETT (SA)]

Sorry guys, that last e-mail was not meant to be sent to the group but a
private individual.
Regards
Dene Collett
KR2S builder
South Africa
mailto: dene.coll...@telkomsa.net

KR> I flew N56ML...

[Dene Collett (SA)]

A HUGE CONGRATULATIONS to you from the other side of the big pond. Fantastic
news!!
Regards
Dene Collett
South Africa
KR2SRT builder
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za


- Original Message -
From: Mark Langford 
To: KRnet 
Sent: Sunday, May 22, 2005 22:18
Subject: KR> I flew N56ML...


> ...and both plane and pilot landed intact

KR> Re: PC help

[Dene Collett (SA)]

Hi Guys/Gals
just a short note to say thanks to all those who sent advice to try and solve 
my PC problems. There are really too many private e-mails to answer every one 
but I assure you that I will try all the advice given.
Thanks again
Regards
Dene Collett
South Africa
KR2SRT builder
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za

KR> another update

[Dene Collett (SA)]

Mark, Didn't you find that if faced with a problem that you just couldn,t
master even after repeatedly trying over and over, just getting out of the
plane for a while and doing something else to get your mind off it for a
while and then getting back in and trying again would give major
improvements in the way you handle it. (Phew)
I found that when on a long trip (3.5 hrs) in the right seat of my friend's
KR (now owned by Serge Vidal) I was given control just after climbout for
the entire trip and just couldn't keep it straight and level. The thing was
like a dolphin swimming in the sea the whole flight no matter what I tried.
On our return trip three days later I was once again given control and to my
surprise somehow my brain had worked out the kinks and I could maintain
level flight indefinately with very little effort.
Good luck with that first flight, I suppose I will have to set my screen
resolution to max to be able to fit your smile in soon.
Regards
Dene Collett
South Africa
KR2SRT builder
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za


- Original Message -
From: Mark Langford 
To: KRnet 
Sent: Thursday, May 19, 2005 06:43
Subject: KR> another update


> KRnetHeads,
>
> Keep in mind that as of sunset yesterday, I felt ready to fly my plane.
So this morning I went out to get some MORE practice, and had 20 high speed
runs in before the FBO opened at 8AM.

KR> ZS-WEC

[Dene Collett (SA)]

Serge,
If it's any consolation, I only really made one 3.5 hour trip in ZS-WEC. On the 
return trip I got a flight from Margate to 43 Air school in Port Elfred in a 
Yak 18t and from there I hopped in with Rob for the last leg to Port Elizabeth. 
This was all in 1998 to the EAA convention held at Margate that year. All in 
all I have about 8 hours in your plane.
Regards
Dene Collett
South Africa
KR2SRT builder
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za

KR> need PC help

[Dene Collett (SA)]

Hi guys 
Can anyone please help me with a problem that I have with my PC (Off line).
I know this is not kr related but I am desperate and request all replies to be 
off list.
All of a sudden my PC  comes up with the message that it can not locate file " 
cmicnfg.cpi" when booting up. If I accept this by clicking OK, the PC works 
normally. When it comes time to shut the PC down it freezes as soon as you 
select "shut down" I am running windows 98SE.
Just to make this legal, I received a Corvair motor on loan this past week end 
so that I can give it a good look through to get familiar with it and to 
measure it up to construct a temporary mount. It still has all its tin, carbs, 
fan, etc on it and was really surprised at its size compared to a VW.
Regards
Dene Collett
South Africa
KR2SRT builder
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za

KR> N1213W

[Dene Collett (SA)]

Can someone tell me who is the owner of N1213W please. Is he on this list, I 
would like to get in touch with him. This must surely be the slekest KR out 
there!
Regards
Dene Collett
South Africa
KR2SRT builder
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za

KR> wing ridgidity

[Dene Collett (SA)]

Since my retract gear is attached to a tube running between the front and rear 
spars that locates in a self aligning bearing/bush at each end much like the 
head of a rod end bearing which is attached by the WAF bolts to the spars, my 
question is: How ridgid is the wing with regard to the distance between the two 
spars once the skin is laid up (Mark L style skins)?
For those that have seen the lancair 360 gear, mine is very similar where it 
attaches to the wing spars which means that if the spars move approx 1/2" 
further apart, the gear will become "unplugged". My stubs are not yet skinned 
and the rear spar is able to move forward and back with very little effort. How 
much force would it take to cause the wing to "stretch" once skinned and 
attached to the outer wing?
I suppose I could put a wrap of uni-directional tape around the wing in the 
area of the WAF's??
Regards
Dene Collett
South Africa
KR2SRT builder
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za

KR> wing ridgidity

[Dene Collett (SA)]

Thanks guys for the replies to my query, I think I will add a tape or two of
carbon or uni glass around the end of the stub just to set my mind at ease.
My worry is hitting an obstacle (mole hill,etc)on a rough strip and causing
the gear leg to rely on the wing skin to transfer the backward force of the
jolt from the rear spar to the forward spar without deforming the wing
enough to "unplug" the gear tube from its pivot bearings at the WAF's.
Regards
Dene Collett
South Africa
KR2SRT builder
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za
- Original Message -
From: Martindale Family 
To: KRnet 
Sent: Monday, April 25, 2005 02:13
Subject: Re: KR> wing ridgidity


> Hi Dean
>
> That sounds like a neat way to do it.
>
> My question is how do you get the wheels to finish up forward of the main
> spar (assuming a tail dragger) after extension from wells located between
> the spars? Do you somehow have the main tube running at an angle between
the
> spars?
>
> Also, how far out is your pivot from the fuselage? I guess that having it
at
> the ends of the stubs would allow the longest gear legs but then more stub
> distance and leg length would promote more twist between the spars which
> seems to be your concern. I think some uni-directional or carbon fibre
> strap, especially across the bottom of the wing between the pivot brackets
> wouldn't be a bad thing but I've no engineering analysis to support that.
>
> >From vague memory, my TC has his gear legs hanging off an extension of
the
> tube you mention that goes through the centre of the main and stops in the
> wing nose. His gear then folds up into the leading edge wing root fillet
> which is enlarged to allow it, that is, his legs and wheels all tuck away
> forward of the spar.
>
> I prefer your arrangement Dean but it would mean no stub fuel tanks...hmmm
>
> John
>
> The Martindale Family
> 29 Jane Circuit
> TOORMINA NSW 2452
> AUSTRALIA
>
> phone: 61 2 66584767
> email: johnja...@optusnet.com.au
> - Original Message -
> From: "Dene Collett (SA)" 
> To: "KRnet" 
> Sent: Monday, April 25, 2005 6:27 AM
> Subject: KR> wing ridgidity
>
>
> > Since my retract gear is attached to a tube running between the front
and
> rear spars that locates in a self aligning bearing/bush at each end much
> like the head of a rod end bearing which is attached by the WAF bolts to
the
> spars, my question is: How ridgid is the wing with regard to the distance
> between the two spars once the skin is laid up (Mark L style skins)?
> > For those that have seen the lancair 360 gear, mine is very similar
where
> it attaches to the wing spars which means that if the spars move approx
1/2"
> further apart, the gear will become "unplugged". My stubs are not yet
> skinned and the rear spar is able to move forward and back with very
little
> effort. How much force would it take to cause the wing to "stretch" once
> skinned and attached to the outer wing?
> > I suppose I could put a wrap of uni-directional tape around the wing in
> the area of the WAF's??
> > Regards
> > Dene Collett
> > South Africa
> > KR2SRT builder
> > mailto: dene.coll...@telkomsa.net
> > www.whisperaircraft.co.za
> > ___
> > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> > please see other KRnet info at http://www.krnet.org/info.html
>
>
> ___
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> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>

KR> wing ridgidity

[Dene Collett (SA)]

Kevin
My system is a tri gear arrangement and therefore it retracts between the
spars and the pivot is 71mm up from the bottom of the main spar and 22mm in
from the end of the main centre spar.
Regards
Dene Collett
South Africa
KR2SRT builder
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za
- Original Message -
From: Golden, Kevin 
To: 'KRnet' 
Sent: Monday, April 25, 2005 15:24
Subject: RE: KR> wing ridgidity


> Is anyone building a KR landing gear to be more like the Wittman gear?  I
> would like to build the gear to come off of the motor mount like the RV's,
> Tailwind, T18, etc, but with a bit of a mixture of gear like the Titan
> Tornado has.  In other words, with Wittman gear, but instead of tapered
> steel gear legs, they would be fiberglass rods.  This is for the KR1.  Now
> the load is on the firewall.
>
> Kevin.
>
>
>
> -Original Message-
> From: Martindale Family [mailto:johnja...@optusnet.com.au]
> Sent: Sunday, April 24, 2005 7:13 PM
> To: KRnet
> Subject: Re: KR> wing ridgidity
>
> Hi Dean
>
> That sounds like a neat way to do it.
>
> My question is how do you get the wheels to finish up forward of the main
> spar (assuming a tail dragger) after extension from wells located between
> the spars? Do you somehow have the main tube running at an angle between
the
> spars?
>
> Also, how far out is your pivot from the fuselage? I guess that having it
at
> the ends of the stubs would allow the longest gear legs but then more stub
> distance and leg length would promote more twist between the spars which
> seems to be your concern. I think some uni-directional or carbon fibre
> strap, especially across the bottom of the wing between the pivot brackets
> wouldn't be a bad thing but I've no engineering analysis to support that.
>
> >From vague memory, my TC has his gear legs hanging off an extension of
the
> tube you mention that goes through the centre of the main and stops in the
> wing nose. His gear then folds up into the leading edge wing root fillet
> which is enlarged to allow it, that is, his legs and wheels all tuck away
> forward of the spar.
>
> I prefer your arrangement Dean but it would mean no stub fuel tanks...hmmm
>
> John
>
> The Martindale Family
> 29 Jane Circuit
> TOORMINA NSW 2452
> AUSTRALIA
>
> phone: 61 2 66584767
> email: johnja...@optusnet.com.au
> - Original Message -
> From: "Dene Collett (SA)" 
> To: "KRnet" 
> Sent: Monday, April 25, 2005 6:27 AM
> Subject: KR> wing ridgidity
>
>
> > Since my retract gear is attached to a tube running between the front
and
> rear spars that locates in a self aligning bearing/bush at each end much
> like the head of a rod end bearing which is attached by the WAF bolts to
the
> spars, my question is: How ridgid is the wing with regard to the distance
> between the two spars once the skin is laid up (Mark L style skins)?
> > For those that have seen the lancair 360 gear, mine is very similar
where
> it attaches to the wing spars which means that if the spars move approx
1/2"
> further apart, the gear will become "unplugged". My stubs are not yet
> skinned and the rear spar is able to move forward and back with very
little
> effort. How much force would it take to cause the wing to "stretch" once
> skinned and attached to the outer wing?
> > I suppose I could put a wrap of uni-directional tape around the wing in
> the area of the WAF's??
> > Regards
> > Dene Collett
> > South Africa
> > KR2SRT builder
> > mailto: dene.coll...@telkomsa.net
> > www.whisperaircraft.co.za
> > ___
> > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> > please see other KRnet info at http://www.krnet.org/info.html
>
>
> ___
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> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>  *The information contained in this message may be confidential and/or
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only.  Any unauthorized use, dissemination or copying of the information in
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>
>
>
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>

KR> crank correction - shot in the dark V2

[Dene Collett (SA)]

Once when my buddy owned a KR with a type IV, it developed a slight
vibration (not nearly as harsh as yours) which was more noticeable at
certain RPMs. After tearing it down it turned out to be slightly worn wrist
pin bushes. After replacing them, it was good as new again. Just a thought.
Regards
Dene Collett
South Africa
KR2SRT builder
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za

KR> Correction on Crank

[Dene Collett (SA)]

Just a shot in the dark here but is your engine mount and its attachment to
the firewall as well as to the motor secure?
Regards
Dene Collett
South Africa
KR2SRT builder
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za
- Original Message -
From: Steve Glover 
To: KRnet 
Sent: Friday, April 15, 2005 4:29 PM
Subject: RE: KR> Correction on Crank

KR> manifold pressure & differential pressure

[Dene Collett (SA)]

Hi guys
For those looking for a differential pressure guage, I have got an "RS" 
catalogue at work in which I remember seeing a really tiny differential 
pressure instrument. It looks like a plastic casting with two "nozzles to 
attach the two sources of pressure. These are electrical instruments which I 
think have an output of 4mA - 20mA which will need some sort of anunciator on 
the panel. I will check it tomorrow (If I remember).
Regards
Dene Collett
South Africa
KR2SRT builder
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za

KR> 4130 plate

[Dene Collett (SA)]

Hi guys,
I have a piece of 4130 steel plate and was wondering which way the grain runs. 
All I can see on it is the original printing. (It must have had a bit of 
surface rust on it at some stage which was removed with some emery cloth). I 
would assume that the grain runs parrallel to the printing?? Any suggestions??
Regards
Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za

KR> 4130 plate

[Dene Collett (SA)]

Thanks Brandt, that confirms my suspisions. I want to bend the stuff to its
minimum radius so I thought it best to get the grain orientation right to
ensure the strongest part possible.
Regards
- Original Message -
From: Brant Hollensbe 
To: KRnet 
Sent: Thursday, March 24, 2005 1:15 AM
Subject: Re: KR> 4130 plate


> Dene
> You are correct.  The grain of metal is marked by the manufacture by the
way
> they print their name on the sheet

KR> Deihl pics

[Dene Collett (SA)]

Gear heads
Thanks to all who sent me pics of their deihl nosewheels. I now have exactly 
the info I wanted. Next is : Does anyone have a second hand one for sale and a 
way for me to pay for it. Remember I am in South Africa.
Thanks again guys.
Regards
Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za

KR> Kr Costs...

[Dene Collett (SA)]

Stephen, what model Garmen was that? Just curious.
- Original Message - 
From: Stephen Jacobs 
To: 'KRnet' 
Sent: Sunday, March 13, 2005 8:56 PM
Subject: RE: KR> Kr Costs...


I was very happy with my new toy - it worked fine in the car but
> it would not work in the airplane.

KR> Deihl gear

[Dene Collett (SA)]

Hi guys/gals
Could someone who has the deihl nosewheel and can either take or has some real 
clear close up pics of the wheel and the fork please send them my way. The pics 
on the Deihl websight don't help me any. Thanks.
Regards
Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net
www.whisperaircraft.co.za

KR> For the SA members

[Dene Collett (SA)]

Hi guys
I am looking for a "Diel" nose wheel or similar. I don't need the gear leg,
just the wheel and the fork. Hopefully it is a 4" wheel. Can anyone in S.A
help me out?
Regards.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> Facet Pumps

[Dene Collett (SA)]

Your charger might only be supplying a half wave rectified sine wave which
literally clips off the negative half of the wave (pos side for those in OZ)
leaving a gap where it used to be. This is OK
for charging a battery but will not work properly as a supply for something
that needs pure DC.
 As for a "Facet "pump Not being able to pump air, all I
can say is "WRONG". The only reason I am alive today is because of a quick
thinking pilot that does not even know how to spell panic.A facet pump that
pumped air into the fuel line nearly cost both of us our life. Trust me it
DOES pump air, been there,seen it, learnt my lesson!
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "Joe Bienkowski" 
To: "KRnet" 
Sent: Friday, February 18, 2005 3:22 AM
Subject: Re: KR> Facet Pumps


> First put a battery across the charger.  PUMP will NOT
> function properly on charger alone.

> Second, these pumps do NOT pump air!

KR> bending radius

[Dene Collett (SA)]

Hi again guys
Can someone give me the minimum bending radius for 1/8" 4130 plate (with and
across the grain).
Thanks
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> main gear position for tri gear

[Dene Collett (SA)]

Hi Guys
I am busy building the main gear legs for my tri gear and was just wondering
where the other guys with tri gear configs have positioned their wheels with
regard to the rear face of the main spar. I am able to get the centre of the
wheel about 215mm from the rear face of the spar. I would be interested if
all those with tri gear configs and have the info available would send it to
me privately.
I was looking at John Shaffer's plane and it would seem that his wheels are
a bit closer than this. Is there not a standard percentage weight that the
mains should handle or is it ok as long as the wheels are behind the rear CG
limit.
Thanks.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> vw engine manual

[Dene Collett (SA)]

Andy, as far as I know it is a standard type IV 2.0L.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message - 
From: "Andy Hatting" 
To: "KRnet" 
Sent: Friday, January 28, 2005 10:37 AM
Subject: Re: KR> vw engine manual


> Don,
> My apologies it seems to be a 2100cc engine or close to that. I don't 
> have the engine with me yet, but will check the engine carefully when 
> I receive it. 
> Hey Dene, (Collet - From P.E.) do you perhaps know what engine 
> was part of the KR2S that we purchased?
> Thanks guys.
> Andy Hatting
> South Africa
> 
> On 27 Jan 2005 at 17:49, Don Chisholm wrote:
> 
> hey Andy;
> I'm not sure what your 2.2 engine is.
> here in Canada type 3 engines started
> as 1700 cc's and ended as 2000cc
> type 4 engines used as van &
> Porsche 914 engines with 1834cc
> engines in these sedans called vw
> 411's,Things might be different in
> your neck of the woods but if it's
> a horizontally opposed aircooled
> 4 cylinder vw, it's in that manual.
> be interesred to here what the
> netters have to say on this one
> Great Plains Aircraft Supply Co.
> lists the manual
> Don Chisholm
> 
> ___
> Search the KRnet Archives at 
> http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to KRnet-
> le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
> 
> 
> ___
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> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
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> 

KR> AS 504X CofG

[Dene Collett (SA)]

Mat That was a great explanation for a layman like myself, thanks very much
for taking the trouble. As a matter of interest I have found out that our
C.A.A has set the rear limit for the RAF48 at 28% chord.
regards
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "Matthew Elder" 
To: "KRnet" 
Sent: Friday, January 21, 2005 12:46 AM
Subject: Re: KR> AS 504X CofG


> Actually it's the other way around.
>
> The designer of the airfoil comes up with (emperically usually)
> a point known as the center of lift.  The aircraft designer uses
> that information based on the mission of the aircraft.
>
> Assume that we are talking about conventional aircraft here (big
> wing in front, little wing in back)
>
> For most GA aircraft, the idea is to keep the CG of the aicraft
> ahead of the center of lift (nose heavy).  This creates a
> pitching moment that pushes the nose of the aircraft towards the
> ground.  The designer then sizes the tail accordingly to have
> enough force to overcome that pitching moment.  IF he gets it
> right, the aircraft will be stable.
>
> If the center of lift and the center of gravity are coincident,
> the tail plane has to apply zero force to keep the aircraft
> level... however, this is akin to balancing a ball bearing on an
> up-side-down bowl or other convex surface
>
> The nose heavy condition will make the aircraft, in general,
> more stable, slower in cruise (due to more induced drag because
> the wing is carring more effective weight) and make landing
> distances longer.  Stall speed will also usually increase, but
> with more of a tendancy to mush (again, in general).  Controls
> will feel heavier as well.  Yes, there is such as thing as too
> nose heavy.  This is where the tail plane simply cannot apply
> the needed down force required to overcome the pitching moment
> created by the wing.  Very bad when you are 3 feet off the
> runway and slow...
>
> The more towards the tail heavy end you go, up to the
> coincindence point, the more touchy (sometimes that can be fun)
> the aircraft becomes, and the faster it will fly (less induced
> drag).  Stall speed will likely decrease, but it may make
> recovery longer. Control feel gets lighter as well.  If you go
> too far aft, well lets just say that's not a good idea.  Anyone
> that has flown a tail heavy aircraft, real, model or otherwise,
> knows what I'm talking about.
>
> I know that I have grossly generalized some information, but
> there are many good books on this subject alone if you want/need
> to get into the nitty-gritty.
>
> Hope this helps,
> Matt
>
>
>
>
>
> --- "Dene Collett (SA)"  wrote:
>
> > Hi guys
> > Thanks to everyone that tried to stear me in the right
> > direction regarding
> > CG location. I have really very limited knowledge of
> > aerodynamics and have a
> > few questions of how the CG is determined. The way I see it is
> > this : After
> > the "designer" has finished designing his aerofoil, he does
> > some more
> > calculations or some testing (wind tunnel?) to determine the
> > CG range that
> > the aerofoil is happy at regardless of what plane it will
> > ultimately be used
> > on. Then again I suppose that would depend on the amoumt of
> > load the wing is
> > expected to carry and the speed it is expected to carry it at.
> > So if I stick to an ultimate aft limit of 30% MAC I should be
> > OK??? By the
> > way, what are the published figures that everyone talks about.
> > I only have
> > the remains of a very old manual and I guess that bit of info
> > is missing. if
> > it wasn't for two friends who had built three KRs between
> > them, I might
> > never have got this far.
> > Mark, the tube is for the mains and yes it is a retract I'm
> > afraid (all
> > three wheels). I am basing the system on a design by Stelio
> > Frati called the
> > "Pinguino". I figured it took me nine years to get this far, I
> > might as well
> > try to produce something really unusual as well as not make it
> > any heavier
> > than the fixed gear.
> > Thanks again guys.
> > Cheers
> > Dene Collett
> > KR2S-RT builder
> > Port Elizabeth
> > South Africa
> > mailto: dene.coll...@telkomsa.net
> > P.S: checkout www.whisperaircraft.com
> >
> >
> >
> > ___
> > Search the KRnet Archives at
> > http://www.maddyhome.com/krsrch/index.jsp
> > to UNsubscribe from KRnet, send a message to
> > krnet-le...@mylist.net
> > please see other KRnet info at http://www.krnet.org/info.html
> >
>
> =
> -
> Matthew Elder
> Orangeburg, SC
> http://www.infinigral.com/melder
>
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>

KR> AS 504X CofG

[Dene Collett (SA)]

Hi guys
Thanks to everyone that tried to stear me in the right direction regarding
CG location. I have really very limited knowledge of aerodynamics and have a
few questions of how the CG is determined. The way I see it is this : After
the "designer" has finished designing his aerofoil, he does some more
calculations or some testing (wind tunnel?) to determine the CG range that
the aerofoil is happy at regardless of what plane it will ultimately be used
on. Then again I suppose that would depend on the amoumt of load the wing is
expected to carry and the speed it is expected to carry it at.
So if I stick to an ultimate aft limit of 30% MAC I should be OK??? By the
way, what are the published figures that everyone talks about. I only have
the remains of a very old manual and I guess that bit of info is missing. if
it wasn't for two friends who had built three KRs between them, I might
never have got this far.
Mark, the tube is for the mains and yes it is a retract I'm afraid (all
three wheels). I am basing the system on a design by Stelio Frati called the
"Pinguino". I figured it took me nine years to get this far, I might as well
try to produce something really unusual as well as not make it any heavier
than the fixed gear.
Thanks again guys.
Cheers
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> AS 504X CofG

[Dene Collett (SA)]

Hi chaps
I know this subject line is old news to some and most will probably know the
answer (including me) but I have to be absolutely sure of my facts before I
take a hacksaw to this piece of 4130 tube in my hands.Mark L, I think I
raised this subject with you some time ago, please bear with me here. So
here goes. I am using the AS5048/5045 combination . I know these airfoils
were designed to be a direct replacement for the RAF48 but I am not sure if
the CG limits are the same. I am particularly interested in the rear limit
at this stage.I know that the CG limits are particular to a specific airfoil
and not the plane itself (I think). I have to be sure that the mains will be
behind the rear limit, by how much I will still have to figure out.
I have been given conflicting information locally (Rear limit: from 6mm to
12.6mm behind the rear face of spar with the spar centred on 25% chord.
Help!!
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> tri-carriage

[Dene Collett (SA)]

Hi Andy
I am from SA as well and know that plane, it was built by a guy by the name
of Robby Allen right here in Port Elizabeth. Because the wing is one piece,
he couldn't get it out of his workshop down a fairly long flight of stairs
so he cut it as described. After that the wing/ fuz section went down wing
tip first with the rear of the fuz after. It also had a type IV motor
mounted "backwards".It was after meeting him that I decided to build one as
well.I actually work with a relative of his. Changing it to a tri gear would
be quite simple. You
will have to make two holes in the wings directly behind the existing
mountings and then swap the left side with the right and changing them from
in front of the spar to behind at the same time (assuming that Robbie
drilled the holes symetrically). As for the nose wheel, the standard Diel
gear should be an easy job.
There are a few other concerns that you should be aware of, contact me
privately for more.
Regards
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "Andy Hatting" 
To: 
Sent: Thursday, January 13, 2005 8:24 AM
Subject: KR> tri-carriage


> I am from South Africa and have just bought a partly assembled KR2.
> We are not comfortable with a taildragger and would like to fit a tri-
> wheel under carriage. Where can one find such and perhaps plans to
> fit them?
> The previous owner had to cut the plane behind the cockpit to get it
> out of his garage, and I wonder if someone has some views on the
> best way to join the two parts. The frame is of wood.
> Andy Hatting
>
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>

KR> ally fittings

[Dene Collett (SA)]

Hi guys
I have seen some traffic on the net lately concerning aluminuim fittings for
aluminuim fuel pipe. Here in S.A and in perticular Port Elizabeth I have had
no luck finding these fittings at all. At this stage I am only "window
shopping" as I am still a ways from doing the fuel system.
What one guy suggested I do was to go to the guys that do auto aircon
servicing and repair as  much of their work is on aluminuim tubing. Can
anybody shed some light on the suitability of these fittings for a flying
machine. it sounds like a good idea to me but then again what do I know.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR>was the heartbreak of Spraylat , now(This is not a hoax)

[Dene Collett (SA)]

Mark
You might want to try a spray or two of your regular aerosol insect killer.
I have used it to remove the adhesive residue left from a
bumper sticker stuck to a mirror for a few years with great success. Best to
try a scrap piece of same material before spraying it on your canopy. If you
have a pair of those snazzy gloves that Dr Dean wore while helping you on
your wings, wear them as well.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> HVLP

[Dene Collett (SA)]

Hi again
A while ago there was a lot of talk about HVLP spraying systems and I did
read them all. I don't remember reading anything describing the difference
in spraying technique compared to normal HP spraying though.
The reason I ask is that I have been given a brand new HVLP "Devilbis"
spraygun by a local coating systems supplier in exchange for a pristine,
extremely old, small " Devilbis-aerograph" gun that I inherited a number of
years ago from my dad's late uncle. Aparently they don't even have one of
them in their own museum in England so they offered me a brand new gun in
exchange for it. I don't intend spraying anything soon but any advice would
be appreciated-privately..
Thanks guys
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

Re: Réf. : KR> drills$WAF's

[Dene Collett (SA)]

Hi Serge
Thanks for the info, she hasn't put much weight on considering all the mods
done. Rob welded those wing tanks himself and I don't know how you could
make them any lighter than they are. I suppose he could have used slightly
thinner ally but that wouldn't have saved much.
Have you managed to get it certified to fly over there yet?
As for the cast ally gear attach brackets, they were aparently a local
casting done by someone in SA.
Just a word of caution, keep an eye on the bolts holding those castings to
the spar. I once found one of them with its head snapped off under the
passenger side. It was probably due to a rough landing he had on one of his
outings to a bumpy strip somewhere.
Go well
Cheers

Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "Serge VIDAL" 
To: "KRnet" 
Sent: Monday, October 11, 2004 9:36 AM
Subject: Réf. : KR> drills$WAF's


Dene,

ZS-WEC was last weighted on July last year, just before I left South
Africa. She had had some modifications since her first flight. First, at a
certain point in time, Rob Van der Merwe added aluminium long range fuel
tanks (in the stubwings), and I suspect these are a  bit on the heavy
side. Then, I made a much heavier instrument panel, meaning also more
wiring, etc. Last but not least, I changed the engine to a 2.4 liter VW,
with full dual electronic ignition. And many more small things that add on
and on...

Result: 321 Kg empty (that is #707, for those who still use Units of
Measure from the "stone" age ;-) )

Now, talking about the spring steel undercarriage, it sure is heavy, but
not that much, and boy! It is reliable and forgiving, that much I can say.

What I could never figure out is the brackets that link the U/C to the
spar. They are L-shaped, and look as if they are made of cast aluminium. I
always wondered where they came from.


Serge Vidal
Paris, France
(Gee, how much I mis South Africa!)






"Dene Collett (SA)" 

Envoyé par : krnet-boun...@mylist.net
2004-10-07 23:50
Veuillez répondre à KRnet
Remis le : 2004-10-09 22:27


Pour :  "krnet" 
cc :(ccc : Serge VIDAL/DNSA/SAGEM)
Objet : KR> drills$WAF's



Thanks to all who responded to my questions regarding long drill bits and
the attaching of the WAF's. I  took a regular 3/16 bit to a new friend
today
who runs a business making all sorts of control cables for
auto/marine/industrial and other. He is getting one of his staff to
lengthen
it for me so it looks like I will get the job done this week end.
As for the weight of a retract system compared to a fixed gear, remember I
said we mostly used leaf spring material over here because it is readily
available unlike the exotic aluminuims like 2024. For interest sake, does
someone have the weight of a Deal gear leg and of the attach bracket +
bolts.My design does not have any attach brackets to speak of as they
piggy
back on the WAF bolts (aluminuim plate straddling the two WAF's) also no
wheel fairings. Although the steel legs are heavy, ZS-WEC was built to a
weight of around 620# originally so it needn't mean an overweight bird at
the end of the day.(Serge, I would be interested to know what it weighs
now??)
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com




___
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please see other KRnet info at http://www.krnet.org/info.html


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KR> John Shaffer gear

[Dene Collett (SA)]

Hi Steve
Thanks for the reply, I would be most greatful for any pics you could
supply.
Cheers
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> John Shaffer gear

[Dene Collett (SA)]

John I share your opinion, I see no reason why someone couldn't build a
retract system that is reliable and no heavier than the stock fixed gear.
Over here we are very limited to materials that we can use for things like
this so most of us take a trip to our local leaf spring manufacturer and
purchase enough stock to bend up two legs. At 14mm thick and around 80mm
wide they tend to weigh a fair amount! You could trade a lot of 1.5"x0.125
wall 4130 tube for the same weight!
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> 3/16 lomg drill/WAF

[Dene Collett (SA)]

Guys, Thanks for all the advice concerning the WAF's drilling . I am now
well and truly confused! It was my understanding that you used a regular
length drill for alignment purposes inserted through the jig from the rear
and held there with finger pressure. The long bit is then used with the
drilling machine through the jig from the front. The long bit will go
through the spar and then push the regular bit out the rear and "PRESTO".
>From one or two of the replies it seems that drilling from both sides with a
regular bit is recommended meeting up somewhere in the middle of the spar.
Either way the drilling jig is a must, that much I do know. So which way is
correct, drilling from both sides or from one side only?? Also guys, don't
forget I live in a metric world here and I have tried all the machine tool
suppliers around here believe me.

I believe that drilling the fitting holes then removing them from one side
before installing the spar into the fuz is by far the easiest, most accurate
and quickest way of getting it aligned spot on.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "larry flesner" 
To: "KRnet" 
Sent: Wednesday, October 06, 2004 2:07 AM
Subject: KR> 3/16 lomg drill/WAF


>
> > Install the wing stub spars first then the WAF's.  The center spar
> >should fit so close that if you install the WAF's first,  you will not be
> >able to slide  the center spar into the fuselage.
> >Bob Stone, Harker Heights, Tx
> ++
>
> I would recomend doing the WAF on a work table and set the alignment
> and dihiedral before installing the center spar in the fuselage.
>
> Using that proceedure you can draw a string from end to end on the
> spar and keep the alignment straight and set the 5" (?) elevation of
> the outer spars.  Then remove one set of fittings from the center
> spar and install in the fuselage.
>
> It worked for me but as always, your results may vary. :-)
>
> Also, the drill jig suggested in the manual works great.
>
> Larry Flesner
>
>
>
> ___
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>

KR> drills$WAF's

[Dene Collett (SA)]

Thanks to all who responded to my questions regarding long drill bits and
the attaching of the WAF's. I  took a regular 3/16 bit to a new friend today
who runs a business making all sorts of control cables for
auto/marine/industrial and other. He is getting one of his staff to lengthen
it for me so it looks like I will get the job done this week end.
As for the weight of a retract system compared to a fixed gear, remember I
said we mostly used leaf spring material over here because it is readily
available unlike the exotic aluminuims like 2024. For interest sake, does
someone have the weight of a Deal gear leg and of the attach bracket +
bolts.My design does not have any attach brackets to speak of as they piggy
back on the WAF bolts (aluminuim plate straddling the two WAF's) also no
wheel fairings. Although the steel legs are heavy, ZS-WEC was built to a
weight of around 620# originally so it needn't mean an overweight bird at
the end of the day.(Serge, I would be interested to know what it weighs
now??)
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> drills$WAF's

[Dene Collett (SA)]

Dan,
Putting the gear at the WAF's also concerned me some untill I saw how the
gear on N250KB was mounted. It flew for long like that without suffering any
side effects of having the gear mounted there and it was only attached to
the front spar. I am also using the 18%
airfoil at the root so the spar is theoretically a bit stronger than stock
as well. I suppose we will see when it gets into the air some day.
by the way, for those who thought I was building a gear that folded back
like the original KR retracts, I am building a gear that folds inwards
towards the fuz and completely retracts into the wing which closes up behind
(under) it. Absolutely nothing dragging out there in the wind at all so no
fairings necessary at all.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "Dan Heath" 
To: 
Cc: "Dan Diehl" 
Sent: Saturday, October 09, 2004 11:35 PM
Subject: Re: KR> drills$WAF's


> RE: My design does not have any attach brackets to speak of as they piggy
> back on the WAF bolts (aluminuim plate straddling the two WAF's)
>
> Dean,
>
> Are you sure that is a good idea, adding all the stress of landings to the
> WAFs??

KR> John Shaffer gear

[Dene Collett (SA)]

Hi Guys
While looking at some of the 2004 gathering pics, I noticed John's plane
with what looks like a retract tricycle gear. Does anyone have more info on
his system, is he on this list. Please someone tell me you have some pics of
how the gear works and is constructed.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> 3/16 lomg series drill

[Dene Collett (SA)]

Hi again guys
This is for the South African builders out there.
For the life of me I cannot source a 3/16 long series drillbit anywhere in
Port Elizabeth. Do any of you guys know where I can get such an animal? I
amm desperate, I want to install the WAF's this weekend and install the
spars inthe fuselage permanently.
Thanks
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> ply scarfs

[Dene Collett (SA)]

Hi gang
After cutting my ply strips for the spar webs, I found that I had cut two
strips too many for thr rear outer spars leaving me short of one skin for
one of the forward outer spars. After sifting through all my offcuts I found
that I could make up the web from three seperate offcuts. Would this be
acceptable, my scarf joints are all 1:20. The spar would have had one scarf
joint anyway due to the size of the ply sheets sold here. They will be
situated at approx 25%, 40% and 90% of outboard spar span.
Thanks
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> Friday off topic Yak flight

[Dene Collett (SA)]

Hi chaps
Well I had to share my experience with someone so here it is. Last Saturday
I had the oppertunity to go up for a short flight in a Yak 52 which I found
out is 360HP turbo! To say I wasn't prepared for it is an understatement!
The power is absolutely awesome on takeoff. We lifted off and the pilot kept
her just above the tarmac untill the speed had built up .On reaching the end
of the runway he yanked it just about vertical and we climbed like a
homesick angel to 1500' and levelled off for a trip down the coast to look
at seven whales frolicking just behind the breakers.
We did a couple of rolls and the pilot also gave me the chance to experience
+ 4.5Gs as well as -1.5Gs. + G is ok but - G will get me to throw up
eventually I think. I also got about 5 min stick time to get the feel of her
before returning to base. For someone who has only experienced about 65
ponies up front, ABSOLUTELY AWESOME!!
Needless to say I went straight home and got to work on my plane.
Have a constructive weekend
Cheers
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> polystyrene & other foams

[Dene Collett (SA)]

Hi guys
Firstly, thanks to all who answered to my foam questions. Frankly I am
confident in using either polystyrene or polyurethane foam in places like
the tail feathers and turtledecks. What I am concerned about is using
polystyrene foam in places that will be holding fuel (my wings) and this is
where all the replies to my post went a little astray. Whether we use open
cell, closed cell or what ever it is all useless if the wing skin cores
dissappear at the first whiff of fuel.
This week I did a test with a piece of polystyrene and a piece of
polyurethane foam, squeegied micro into the polyurethane and straight resin
on the polystyrene.Squeegied a piece of 600 gram BID glass into contact and
left to cure for a day. The results show little difference in the force
required to seperate the glass from both foams. If anything, I am now in
favour of the polyurethane simply for the ease of shaping and the truer,
stiffer product obtained by sanding.
If this foam I have is the same as what you are using over there, I will be
building my wings out of it. Now to convince the inspector.
Once again guys, thanks.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "Stephen Jacobs" 
To: "'KRnet'" 
Sent: Tuesday, September 07, 2004 11:04 AM
Subject: RE: KR> polystyrene & other foams


> Dene
>
> Are you aware that Sagex in Johannesburg also supplies polyurethane -
> they carry a range thicknesses from 8mm to 300mm (2440 x 1220).  They
> only keep 32 and 35kg/m3 in stock - heavier on special order.
>
> I deal with Charmaine van Biljon
> [charmaine.vanbil...@owenscorning.co.za] - ask her to fax you the price
> list.
>
> Steve J
>
>
>
>
> ___
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>

KR> polystyrene & other foams

[Dene Collett (SA)]

Hi guys
This discussion has got me wondering about different types of foams. I was
advised to use the 24KG/M3 polystyrene foam nine years ago when I started
building and it has served me well so far. I am now getting ready to build
the outer wings in which there will be aluminuim fuel tanks. Although the
tanks will be ally, I just can't bring myself to build the wings out of
polystyrene foam. The last thing I need is to develop a weep from a hose
clamp or something and have the wing turn into an aerodynamically shaped
jelly.
The only polyurethane foam I have seen is the stuff used in the thermal
insulation business. It can be purchased in sheet form of various
thicknesses or as a two-pack that is mixed and poured into whatever needs to
be insulated. The sheet is very light and ridgid and sands very very easily.
When sanded, it forms very fine dust and produces a very good product. What
concerns me is the fact that the surface of the product seems to always be
shedding this "powder". I would imagine that the surface would seperate
quite easily from the glass even if a micro slurry is squeegied into it. It
also has the tendency to crush and not "give" when pressed by a fingertip
whereas the polystyrene has a certain amount of "spring" in it and will
return to its original shape--within reason.
My question is this: Is this polyurethane foam the same animal that you guys
over there are using.
P.S Mark J, I tried to look at the sight you refrenced regarding your wing
tanks but all I get is the top pic showing all the necessary tools & equip
needed for the job?? (http://www.krnet.org/wingtank/ )Also, how did you
secure the tanks to the spars?
Sorry for taking up so much bandwidth.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> kr in sportaviation

[Dene Collett (SA)]

Hi Guys
Where if anywhere can I get hold of the following article: 820357Sport
AviationPrice KR-2 with Long Wings, 64 gallon fuel
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> Newbold

[Dene Collett (SA)]

Hi Netheads
A few years ago there was an article in "Kitplanes" about a motor developed
by a guy by the name of Newbold. Does anybody know what happened to this
motor? If I remenber, it put out something like 50HP and weighed in at
around 25#.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> tortional loads +early friday

[Dene Collett (SA)]

Hi Eduardo
YES PLEASE, send them to me. I already have a design of my own but no metal
has been cut yet so if I come across something better I can change to it
easily.
Thanks
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "Eduardo Iglesias" 
To: "KRnet" 
Sent: Friday, August 06, 2004 3:32 AM
Subject: Re: KR> tortional loads +early friday


> Dear Dene
>
> I have come thinking of the retract gear already for time and I liked a
lot
> what put Lancer in the first Lancair. It is simple, easy and I believe
that
> sure.
> I have some picture of a RG that was made in US there are about ten to
> twelve years, very similar to that of the Lancair. If you need it, I look
> for them and I send it to you
> This uses as shock absorber some cylindrical sections of polyurethane.
> Eduardo
>
>
> - Original Message -
> From: "Dene Collett (SA)" 
> To: "krnet" 
> Sent: Thursday, August 05, 2004 4:45 PM
> Subject: KR> tortional loads +early friday
>
>
> > Hi KR heads
> > As some of you know, I am working on a full retract tricycle gear on my
> > rendition of a KR2S. Tonight I went to look at some wood for the forward
> > outer spars at a friend of mine who is a very respected person in the
> > experimental world over here.
> > I was discussing the retract system with him and he brought up a point
> that
> > I had not considdered at all. As my retract system requires that the
> bottom
> > wing skin of the stubwings be split basically from root to outboard end
in
> > order for the gear to retract into the wing. This means that the bottom
> skin
> > will no linger be continuous between the spars.
> >
> > My question is: What, if any, tortional loads does the skin carry under
> > normal conditions due to forces applied by ailerons, etc. and what
effect
> > will the splitting of the skin in order to accomodate the gear have on
> wing
> > strength.
> >
> > As a bit of background, my gear will consist of a 1.5" 4130 tube between
> the
> > spars supported each end by a bearing mounted in a piece of aluminuim
that
> > bolts onto the spars by picking up the W.A.F bolts. To this tube will be
> > another 1.5" tube welded at 90* to it forming the gear leg. At the
bottom
> of
> > this will be a trailing link arrangement with a  damper. The tube
between
> > the spars will be mounted almost at the outboard end of the stubwings
and
> > the gear will retract towards the fuselage just clearing it to sit
> > completely inside the wing.
> >
> > Any thoughts from those in the know will be greatly appreciated.
> > Thank you
> > next day:
> > On a less serious note, I was fortunate enough to have had the "WHISPER"
> > experience today. After work I was invited to go on a "test" flight for
> > about half an hour down the coast here. This plane is remarkable. I was
> > amased when Russell (the designer,builder &pilot) let go of the stick
> > immediately as the tail came off the groung and the plane just took off
> and
> > flew straight ahead in a steady climb all by itself! Takeoff roll was
less
> > than 80metres with a 13 knot headwind! Deploying the spoilers on final
> > brings the glide slope from 28:1 down to 8:1, feels like the seat has
> fallen
> > out of the bottom of the plane.
> > For more info see my signature line.
> > Dene Collett
> > KR2S-RT builder
> > Port Elizabeth
> > South Africa
> > mailto: dene.coll...@telkomsa.net
> > P.S: checkout www.whisperaircraft.com
> >
> >
> >
> > ___
> > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> > please see other KRnet info at http://www.krnet.org/info.html
> > ---
> > [This E-mail scanned for viruses by Declude Virus]
> >
> >
>
> ---
> [This E-mail scanned for viruses by Declude Virus]
>
>
> ___
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>

KR> Fuel tanks

[Dene Collett (SA)]

Hi gang
I built a fuel tank for a boat a few years ago from general purpose
polyester resin. I was worried about fuel dissolving the resin so I set out
to find a coating for the inside of the two halves before bonding it
together. what I found at a local paint shop was a food grade two part
coating that is resistant to just about everything including acids and the
like. It comes in two or three colours in order for you to be sure that the
first coat covers the surface completely and the same for the second coat.
It has now been about two years and has had fuel in it all the time with
absolutely no signs of degradation. The stuff is also as tough as hell. I
have forgotten the name but i can find out if anybody is interested.
Cheers
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> tortional loads +early friday

[Dene Collett (SA)]

Hi KR heads
As some of you know, I am working on a full retract tricycle gear on my
rendition of a KR2S. Tonight I went to look at some wood for the forward
outer spars at a friend of mine who is a very respected person in the
experimental world over here.
I was discussing the retract system with him and he brought up a point that
I had not considdered at all. As my retract system requires that the bottom
wing skin of the stubwings be split basically from root to outboard end in
order for the gear to retract into the wing. This means that the bottom skin
will no linger be continuous between the spars.

My question is: What, if any, tortional loads does the skin carry under
normal conditions due to forces applied by ailerons, etc. and what effect
will the splitting of the skin in order to accomodate the gear have on wing
strength.

As a bit of background, my gear will consist of a 1.5" 4130 tube between the
spars supported each end by a bearing mounted in a piece of aluminuim that
bolts onto the spars by picking up the W.A.F bolts. To this tube will be
another 1.5" tube welded at 90* to it forming the gear leg. At the bottom of
this will be a trailing link arrangement with a  damper. The tube between
the spars will be mounted almost at the outboard end of the stubwings and
the gear will retract towards the fuselage just clearing it to sit
completely inside the wing.

Any thoughts from those in the know will be greatly appreciated.
Thank you
next day:
On a less serious note, I was fortunate enough to have had the "WHISPER"
experience today. After work I was invited to go on a "test" flight for
about half an hour down the coast here. This plane is remarkable. I was
amased when Russell (the designer,builder &pilot) let go of the stick
immediately as the tail came off the groung and the plane just took off and
flew straight ahead in a steady climb all by itself! Takeoff roll was less
than 80metres with a 13 knot headwind! Deploying the spoilers on final
brings the glide slope from 28:1 down to 8:1, feels like the seat has fallen
out of the bottom of the plane.
For more info see my signature line.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> dihedral

[Dene Collett (SA)]

Hi Again guys
Can someone tell me what the dihedral angle is from the horizontal. I know
you set it up with 5" blocks at the tip but I am using the 5048-5045
combination which means the wing will be a slightly different thickness at
same span. I need the angle formed by a line drawn spanwise down the
centreline of the outer forward spar and the horizontal.I suppose I could
work it out by drawing the old wing in CAD but I'm sure someone has that
information at their fingertips.
Thanks guys
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> retract gears/was something else

[Dene Collett (SA)]

Hi Timothy
It would be great if you could get those pics of John's gear, I suppose if
it has already been done successfully, I don't need to worry if the wing can
handle it or not--it obviously can. Still it would be great to see how he
did it.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "Timothy Bellville" 
To: "KRnet" 
Sent: Friday, August 06, 2004 1:30 PM
Subject: Re: KR> retract gears/was something else


> Oscar, there is one two hangers down from mine . It was built by a gent
> named John Shaffer. I'll ask his permission to send you some pic's of it.
It
> is a very nice set up, much like a Bonanza.

KR> Aerobatics in the KR?

[Dene Collett (SA)]

Hey Serge
Yep, got me there. As I have said before WEC is the only KR that I have ever
flown in. We did three rolls that day, the third one being the best (If I
had closed my eyes, I wouldn't have felt the roll!)
Rob did tell me that he has looped it as well, how many times I don't know.
Another interesting story he told me was one day while flying alone he
rolled it 15 or 19 times in one continuous roll untill he lost all
orientation and had to stop.
I took delivery of a beautiful set of 5" "Grove" wheels and brakes with
11.400x5 tires as well as two weld-on axles. Now I can really get my retract
system going. Only problem is my pro welder (Rob) is off to New Zealand next
week Wednesday for up to three months!
Cheers
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "Serge F. Vidal" 
To: "'KRnet'" 
Sent: Wednesday, July 14, 2004 12:27 PM
Subject: RE: KR> Aerobatics in the KR?


> Hi, Dene! Was it my plane (ZS-WEC), by any chance?
>
> Cheers,
>
> Serge Vidal
> KR2 ZS-WEC
> - Taildragger, VW powered (2.4 liter, dual electronic ignition)
> - Total aircraft time: 390h
> - Aircraft hangared at: Orleans, France
> - Pilot moaning in: Tunis, Tunisia
> E-mail: serge.vi...@ate-international.com
> <mailto:serge.vi...@ate-international.com>
>
>
>
>
> -Original Message-
> From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On
> Behalf Of Dene Collett (SA)
> Sent: Thursday, July 08, 2004 21:41
> To: KRnet
> Subject: Re: KR> Aerobatics in the KR?
>
>
> Hi Guys
> I have done rolls in a KR2 and I know the same plane did loops as well
> without any problems. It was powered by a type4 VW 2.0L.
> Dene Collett
> KR2S-RT builder
> Port Elizabeth
> South Africa
> mailto: dene.coll...@telkomsa.net
> P.S: checkout www.whisperaircraft.com
>
>
> - Original Message -
> From: "Duncan" 
> To: 
> Sent: Wednesday, July 07, 2004 12:09 PM
> Subject: KR> Aerobatics in the KR?
>
>
> > Hi,
> > I've searched the archives of this list, and have not really found much,
> so
> > here goes with my question:
> >
> > Can one perform 'recreational' aerobatics in a Corvair-powered KR2?
> >
> > Before you dash off a reply pointing out that I should look elsewhere
for
> a
> > more suitable aircraft, let me hasten to add that I'm not asking if it
can
> > handle competition type aerobatics, I know it can't.  I'm asking because
> > I'm about to do a 15-hr aerobatics course, and I would really like to
> spend
> > some of those long summer afternoons practising a few loops and rolls.
I
> > know the Sonex, for instance, (whose airframe is rated to roughly the
same
> > G-forces, and which uses the VW conversion) is certainly rated for mild
> > aerobatics.  So, what about the KR?
> >
> > Duncan
> >
> >
> >
> > ___
> > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> > please see other KRnet info at http://www.krnet.org/info.html
> >
>
>
> ___
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>
>
> ___
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>

KR> Aerobatics in the KR?

[Dene Collett (SA)]

Hi Guys
I have done rolls in a KR2 and I know the same plane did loops as well
without any problems. It was powered by a type4 VW 2.0L.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "Duncan" 
To: 
Sent: Wednesday, July 07, 2004 12:09 PM
Subject: KR> Aerobatics in the KR?


> Hi,
> I've searched the archives of this list, and have not really found much,
so
> here goes with my question:
>
> Can one perform 'recreational' aerobatics in a Corvair-powered KR2?
>
> Before you dash off a reply pointing out that I should look elsewhere for
a
> more suitable aircraft, let me hasten to add that I'm not asking if it can
> handle competition type aerobatics, I know it can't.  I'm asking because
> I'm about to do a 15-hr aerobatics course, and I would really like to
spend
> some of those long summer afternoons practising a few loops and rolls.  I
> know the Sonex, for instance, (whose airframe is rated to roughly the same
> G-forces, and which uses the VW conversion) is certainly rated for mild
> aerobatics.  So, what about the KR?
>
> Duncan
>
>
>
> ___
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>

KR> sad day

[Dene Collett (SA)]

Hi Gang
I don't know how many of you know about or have been following the progress
of two South African microlighters doing a circumnavigation of the globe
(Freedom flight South Africa). One of them is from my home town Port
Elizabeth and the other guy from Cape Town.

I got the news yesterday that one of them, Honeyball from here went down in
a lake in China after flying into some bad weather. Information is sketchy
at best but it would appear that they asked for permission to land at the
nearest airport and were denied. They climbed to 11000' and it is suspected
that the severe conditions caused a fatal structural failure. After landing
at the next airport his partner alerted the authorities and a search party
was launched. Honeyball's body was found in the lake after a search of the
area.
On behalf of the KR.net I would like to extend my and our condolences to the
friends and family of a brave man, and from what I have heard, an excellent
pilot. It is the efforts and achievements of people like him that motivate
people like me to keep on building and realise my dream of flying my own
plane some day.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> Sad day-correction

[Dene Collett (SA)]

The name of the chap that crashed was Allan Honeybourne and not "Honeyball"
as stated in my previous post.
His partner's name is Ricky De Agrela(sp)
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

krnet@list.krnet.org

[Dene Collett (SA)]

Hi guys
Thanks for the e-mails, i tried to reply privately but for some reason both
of the e-mails were returned. If you guys would drop me another e-mail just
so I can make sure that I have your addresses right it would be appreciated.
I have a few questions.
Apologies to the rest of the gang .
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> intercoms

[Dene Collett (SA)]

Hi Netters
I am waiting for my wheels and brakes to arrive so was wondering if someone
has any circuit diagrams of a good stereo,2 place intercom with auxiliary
input for CDplayer. Must have aux override when receiving rf and be VOX.
Just something to keep me busy in the meantime.
Thanks in advance
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> intercoms again

[Dene Collett (SA)]

Hi netters
Thanks to those that responded to my request for intercom circuit diagrams,
but guys that is exactly what I am looking for (CIRCUIT DIAGRAMS). I wish I
could afford one of those beauties but with a Microair M760 and a set of
grove 5" wheels, brakes, tyres, tubes and axles on the way there is just not
enough left for luxuries. Hell I am already down to bread and water three
times a day!
Seriously, there must be a few tinkerers out there that have been there and
done that before. It shouldn,t be that difficuilt to design something as
simple as an intercom if you knew what you were doing. I tinker with
electronics a bit (assemble from diagrams others design) but that is as far
as my abilities go.
anyone??
Thanks
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> Microair 760

[Dene Collett (SA)]

Hi Jim
I have been to "Microair's websight and I don't find any refrence to a built
in intercom. They are offering bundle packages though (some including a 2
place and some a 4 place intercom). By the sound of it these intercoms are
seperate units and the diagrams represent their intergration with the
Microair radio.
Maybe I should just wait till the thing arrives and take it from there. In
the meantime I will just use the length of garden hose as someone suggested.
The only problem is that I can't stick it far enough into my ear for it to
stay put when I let it go.Might try some cotton flox mixture and sleep on
it.
Cheers
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "JIM VANCE"

> Dene,
>
> The Microair includes a two place intercom.  It can be set up with either
a hot mike, or push-to-talk.

KR> antennae +Microair

[Dene Collett (SA)]

Hi guys
Thanks to those that replied to my query regarding the Microair radio--much
appreciated.
my next question is about the antennae. I will be using a dipole as
described in my last post but was wondering what effect mounting the leg
that the screen of the co-ax is soldered to horizontally will have over
mounting it 180deg opposed to the driven element. I know one of the replies
described an installation like this but I would like to know what the
theoretical difference is since I have the space to mount it either way.
I have a book titled "understanding and repairing CB radios" by Lou Franklin
in which a chapter deals with various different types of antennae but only
shows the dipole 180deg opposed. One good tip it gives is to use 10-12 turns
of the co-ax feeder wrapped in a coil about 6"-8" (for CB freq I would
imagine) just before the antennae. Has the same effect as the "balun" used
in Mark L's install but I guess it weighs ten times as much also.
The dimensions for the Microair M760 are on the Spruce websight but I can't
seem to find dimensions for the transponder(depth behind panel), Anyone.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> RV grin---off at a tangent

[Dene Collett (SA)]

To Brian  Kraut
I received an e-mail from you (at least that is where it said it came from)
with the subject line stating "valuable information " or something like
that. Did it come from you or is it somethimg I should get rid of with its
attachment A.S.A.P.
I tried to send you a message privately but it was returned, sorry to the
rest of you guys for using bandwidth for this.
Thanks
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "Brian Kraut" 
To: "KRnet" 
Sent: Thursday, April 29, 2004 3:58 AM
Subject: KR> RV grin


> One thing I forgot on my Sun and Fun report.
>
> I took a demo ride in an RV-9 (no throwing rotten tomatoes at me please,
it
> was a free ride that I couldn't pass up).  It climbs like a homesick angel
> and has great performance.  It is roomy and is whole lot more fun that any
> Wichita spam can, but I have to say that the RV grin is not even in the
same
> league as the KR grin.  The KR beats it hands down by an order of
magnitude
> in the fun factor.
>
> In all fairness to Dana and the thousands of other RV owners, it is a
great
> plane and has the KR beat in some areas, but fun flying certainly is not
one
> of them.
>
> Brian Kraut
> Engineering Alternatives, Inc.
> www.engalt.com
>
>
> ___
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>

KR> microair & antennae

[Dene Collett (SA)]

Hi guys
I saw mention of a microair radio in a message that was accidentally deleted
. To the person that has this radio, would you recommend it ? I have one on
order although I have never seen one before. I ordered it because of its
ability to mount in a standard instrument hole and it seems to have good
features.Will I be dissapointed?
I decide that after seeing Mark L's antennae install that I also wanted the
same. Because I couldn't find copper tape I had to come up with something
else. My answer was to strip the shield from a length of co-ax cable, bunch
it up to make the hole bigger then isert a 1/4" dowel into it. Stretch the
shield tight over the dowel, coat with resin and you have a perfect ridgid
antennae that will slide up the hole in the fin that I had to bore since my
fin was built many moons ago. One end is twisted together for the feeder to
solder to and the other end is trimmed for correct s.w.r. Two of these and
my dipole is in business!
Thanks
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> Updated story and pics of ZS-WEC

[Dene Collett (SA)]

send them on Serge, I love to see pics of the only KR that I have ever flown
in!
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "Serge F. Vidal" 
To: "'KRnet'" 
Sent: Friday, April 16, 2004 11:34 AM
Subject: KR> Updated story and pics of ZS-WEC


> Some of you may remember the story of my South African registered KR2,
which
> transited through Tunisia (where I now live, and where aircraft are
> apparentlyt not  welcome!), before ending up in Orleans, France.
> Well, last month, I did a trip to France in order to unpack the aircraft,
> prepare it for future inspection, and start the negotiation with the local
> airworthiness authorities.
> First job was to unpack the aircraft. Second job was to become a member of
> the local homebuilder's club, and to move the aircraft from my friend's
> pivate hangar to the club's hangar. Third job was to look for damages, and
> fix them.
> I was much concerned about the aircraft condition, since she went through
> two moves by container, and six months storage in a bad hangar at the
Tunis
> harbor.
> Well, I found the damage to be fairly limited. Apart from the deeply
> encrusted pigeon sh**, that is. The tires were flat. I found a few
corroded
> nuts and bolts, rusted disk brakes, rusted propeller hub. I inspected the
> inside of the engine cylinders, using a bore-scope that I had bought from
> Aircraft Spruce and had delivered directly to France. (I recommend that
> stuff. It's called Pro-Vision; it is a cheap fiber-optics bore-scope, that
> goes for about $250, depending on length and accessories, and works like a
> dream). Although I am no expert on engines, I found what I thought was
only
> minor cylinder walls corrosion (even, and not too deep. I then sprayed
> liberally some WD-40 oil in the cylinders, turned the prop by hand many,
> many times over two days, then started the engine again. Works fine,
sounds
> good.
> I also fitted the new throttle (this you may also remember), only to find
> that the cable does not fit anymore, and would have to be redone.
> Part of the plan was to drill inspection holes in the spars (another story
> you perhaps remember). Alas, my specially built long drill bits were lost
by
> the airline, so, maybe next time...
> The French airworthiness inspectors were very helpful. We agreed on an
> inspection plan together, and I think there is good chance that I will be
> able to register that machine in France one day.
> Before I left, I preserved the engine again, spraying some more WD-40 in
the
> cylinders, plugging all the holes, and fitting preservation  spark plugs.
> These are home-made: I just fitted a tube to some spark plugs that I had
> emptied, then filled the tube with the best dessicant I could find
(rice!),
> then plugged the tube. Then, somebody came along, asked a question about
the
> ignition, so to show how the ignition works,  I turned the prop... and the
> compression popped a tube open, and even popped the exhaust plugs!
> Compressions are still OK, then!
> Another job was to remove the South African registration marks. These
being
> painted on, that proved to be a mission. But the local club is well
> equipped, so I could borrow an orbital sander, and it worked fine. But it
is
> now obvious that I will have to repaint the bird.
> >From now on, until it gets a new registration, I will refer to my KR2 as
> "Kilimanjaro Cloud", the name my wife chose for her. French registrations
> for homebuilts are F-P***, and you can choose the last three letters. I
hope
> F-PLAY has not been taken yet!
> Anyway, to those interested, I have plenty pictures of the aircraft, the
> most interesting ones being of the engine, the interior, and the
instrument
> panel.
>
> Serge Vidal
> KR2 ZS-WEC
> - Taildragger, VW powered (2.4 liter, dual electronic ignition)
> - Total aircraft time: 390h
> - Aircraft hangared at: Orleans, France
> - Pilot moaning in: Tunis, Tunisia
> E-mail: serge.vi...@ate-international.com
> 
>
>
> ___
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>

KR> incidence angle and KR2 Simulation

[Dene Collett (SA)]

Ameet, please include me in your list of people to receive the xplane file.
thanks
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message - 
From: "Ameet Savant" 
To: "KRnet" 
Sent: Thursday, April 15, 2004 3:16 PM
Subject: Re: KR> incidence angle and KR2 Simulation


> Hello,
> 
> Sometime ago, Dan Heath and I did a X-plane simulation
> of the KR2 as per plans built with a VW engine. That
> plane does fly in a nose down attitude as Larry
> describes.
> 
> Keeping everything else same, I changed the wing
> incidence and horizontal stab incidence as per Mark's
> figures, and the KR2 seemed to fly in a much more
> normal attitude. Also, it seemed a little less
> sensitive. But I didn't stretch it and I didn't use
> the corvair.. so it is not an accurate model of Mark's
> plane.
> 
> The X-plane simulation is a work in progress, but Dan
> and I haven't worked on it for sometime now.
> 
> If anyone is interested in receiving the simulation
> (X-plane 7.0+) email me off the net and I can email
> you the current version of the plane.
> 
> I don't have the S supplement so I can't model the S.
> 
> Regards,
> Ameet Savant
> ameetsavant at yahoo dot com
> 
> --- larry flesner  wrote:
> > It would seem to confirm the theory that the
> > wing has too 
> > much incidence and that the 1.5 to 2 degrees that
> > some are 
> > Larry Flesner
> 
> 
> 
> 
> 
> __
> Do you Yahoo!?
> Yahoo! Tax Center - File online by April 15th
> http://taxes.yahoo.com/filing.html
> 
> ___
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
> 

KR> 2 pitot questions

[Dene Collett (SA)]

Hi again gang, I had the oppertunity yesterday to take a good look at a
Lancair360 and saw two things that interested me. On the landing gear
(retract) they do not make use of the conventional squat switch using a
microswitch mounted somewhere on the retract mechanism but use of a pressure
switch connected to the pitot line. this switch will not close the contact
untill it sees a pitot pressure that represents 70mph. My question is : What
pressure will 70mph create in the pitot line. I know it is actually the
differential pressure between the pitot and the static port. What would it
be in inches mercury/mm water.
My second observation was that the static port is located on the fuselage
side behind the pilot. Has anyone used this location for the static port? My
thoughts are that this would be a low pressure area???
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR> 4130 tubing

[Dene Collett (SA)]

Hi Gang
Can anyone tell me where I can find information regarding the minimum
bending radius for various sizes of 4130 tubing. At the moment I am
interested in 1.5" OD with .025 wall. Tanks guys.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR>area 51 composite KR

[Dene Collett (SA)]

Hi gang
I was taking a look at the pics of the composite KR  featured on Mark L's
site at the 1997 gathering. Does anyone know what happened to this plane? It
would mean a lot to me if someone had access to it to take some detailed
pics of the retract gear. I will be using a similar system in my plane and
have some concerns that might be sorted out by a few good pics. Anyone?
Mark in one of the pics of your plane taken from behind with the rear deck
removed, it looks like you have an antennae or something resembling one
standing vertically behind and just to the right of centre???
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR>South african builders

[Dene Collett (SA)]

Guys , I am trying to get a hold of Christo V.D. BERG down in the Cape. Can
anyone help me out with a tel for him. thanks.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR>high low pressure

[Dene Collett (SA)]

Hi guys
Can someone tell me if the area approx six inches ahead of the canopy on
centre line experiences a higher than or a lower than atmospheric
pressure.I.e is it ok to put a flush mounted vented fuel cap in that
position?
Thanks
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR>fuel vent

[Dene Collett (SA)]

Hi Guys
Thanks to all those who responded to my post regarding fuel cap/vent
location. I have an allergy to any lumps and bumps that break the lines so I
have decided on the following: 1: Fuel cap will seal 100%. 2: It will be
located under a flush lid that conforms to fuselage shape, in fact it will
be made from the piece that I cut out of the front deck. 3: Header vent will
be
from highest point in tank and will be routed to exit somewhere on the
underside of fuz facing forward for a little ram air. 4: Wing tank vents
will go to header tank and will be at the header "full" level which  will be
about 50mm from the top of tank. The reason for this is  if someone turns on
the fuel transfer pump when the header tank is already full, the wing tank
vents will become submerged and suck fuel in stead of air so circulate the
fuel in stead of dumping it out the header vent (impossible to overflow
header). 5: Wing tanks will be
filled via header as per Serge's system with an isolation valve in series so
the wing tanks don't have to be used on shorter trips. 6: In case of
transfer pump failure, my main feed to the motor goes via a 3 way 3 position
(all off, header, wings)
selector valve that can supply the motor from the header (normal) or
directly from the wing tanks (transfer pump failure). 6: sight guage on
header tank only, no plan for guages in wing tanks yet.
Thanks again.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR>pencil rubber

[Dene Collett (SA)]

Hi Larry
Thanks for the reply, I decided to just give the ply a good rubbing with
some sand paper to clean any residue of rubber off. As you said, if it left
anything behind, it would be on the surface only. I tend to let little
things bother me when I run out of money to buy materials and am looking for
something to do with the materials I have at hand. Things are looking up
though, give me another two years or so and I should have a flying airplane!
Thanks again.
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com


- Original Message -
From: "larry flesner" 
To: "KRnet" 
Sent: Monday, February 23, 2004 2:47 AM
Subject: Re: KR>pencil rubber


 could
> you turn the ply over and glue on the opposite side and put the
> "erased" side on the exterior?
>
> Larry Flesner
>
>
>
> ___
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>

KR>pencil rubber

[Dene Collett (SA)]

Hi guys
I was busy this afternoon marking out a spar on one of the ply skins for the
outer rear spars when I realised that I had made a mistake and proceeded to
rub out the line with a normal pencil rubber. because the pencil line was
drawn 90deg to the grain of the ply so I had to rub up and down with the
grain while slowly following the line covering quite a wide area in the
process.My question is this: What is the effect of this on the epoxy to ply
joint in areas where the rubber has covered, if any?
Any comments?
Dene Collett
KR2S-RT builder
Port Elizabeth
South Africa
mailto: dene.coll...@telkomsa.net
P.S: checkout www.whisperaircraft.com

KR>WAF'S Edge Distance

[Dene Collett (SA)]

- Original Message -
From: 
To: 
Sent: Saturday, January 24, 2004 6:53 AM
Subject: KR>WAF'S Edge Distance


> Hi All,
>
> Is any one else out there worried about the edge distance on the WAF's?
They
> are only 1 1/2 inches wide and the 8 AN3 bolts in each one are only about
1.5
> D from the edge.
>
> If I had it to do over again I think I would make my spar caps thicker at
the
> root and I would make the center caps thicker all the way across.
>
> Chris Theroux
> Gilbert, AZ
Chris, that is exactly how I have built mine. centre spar caps are as deep
as they are wide.
Dene Collett

KR>GK-1

[Dene Collett (SA)]

Jim, the GK-1 was BY NO MEANS a glider version of the KR-1!
Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net
P.S. Checkout www.whisperaircraft.com

- Original Message -
From: "JIM VANCE" 


Many thanks to Dene, Serge, Sherman, and others for the information on the
GK-1 glider version of a KR-1.

If anyone else wants more information on the GK-1, you can find it at

www.whisperaircraft.com/GK-1

Jim Vance
va...@claflinwildcats.com
___
to UNSUBSCRIBE from KRnet, send a message to krnet-le...@mylist.net
please see other KRnet info at http://www.krnet.org/instructions.html

KR>rear spar HELP

[Dene Collett (SA)]

Hi guys
I just realised that the fact that the outer wing spars are narrower by the
thickness of the two W.A.F's. This will  account for the outer spars being
about1.3mm less in total height due to the fact that they make contact with
the skin a little further aft than the centre spars (leading edge of spar).I
know I could just trim off 2.5mm from the top and bottom of the spar but am
conserned with how close the waf attach bolts will come to the edge.I have
also worked out that if I move the airfoil back about 28mm relative to the
spars, they will fit perfectly. Of course the C of G will move back by the
same amount.The way I see it, this solution has more advantages than
disadvantages: 1: I end up with a spar that is stronger by a long way over
the standard RAF 48 spar due to two factors namely they are taller by
default (18% airfoil) and slightly oversise.
2: with the C of G 28mm further back it makes getting the C of G in the
right place easier due to these planes tendency to be tail heavy.
As for the front spar, it was built with slightly deeper spar caps and can
be trimmed appropiately without ending up weaker than required.
The only possible drawback that I see is now the spar will not be positioned
over the centre of lift of the airfoil as well as before. I know VERY LITTLE
about this and for all I know it might not even be an issue at all.
Please guys, let me have any and all concerns with this remedy as I really
don't want to build a new rear centre spar.
Somebody please tell me I am stressing over nothing.
Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net
P.S. Checkout www.whisperaircraft.com

KR>alignment of rear spar

[Dene Collett (SA)]

Hi John
Thanks for the help, your idea of the pushrod going behind the rear spar
sounds interesting. Do you have any pics to show?
My biggest worry is the rear spar that appears asm if I built it 5mm too
high!!
Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net
P.S. Checkout www.whisperaircraft.com

- Original Message -
From: "Martindale Family" 
To: "KRnet" 
Sent: Friday, January 16, 2004 8:59 AM
Subject: KR>alignment of rear spar


Dene

Something to consider and that has been discussed in the archives
previously.

If you raise your rear centre spar above the lower longerons by about 5/8"
and leave the main centre spar sitting on the longerons you can obtain the
following advantages:

  1.. A reduction in angle of incidence of the wing (chord line relative to
firewall) from about 3 1/2 degrees to 2 1/2 degrees. This reduces the nose
down look that KRs have in level flight.
  2.. A reduction in the decalage angle (relative difference betwen wing and
tail plane incidence). This reduces drag.
  3.. A gap under the spar so that you can run a elevator push rod under
your seat from the bottom of the stick to the bell crank behind the spar.
To set the washout at the wing tip I used the outer ply rib tacked with a
single brad to the centres of each outer spar where intersected by the
chordline and then just lifted the rear one until the appropriate washout
was achieved. Followed by support and then glueing. Maintain the support
until your skins are on and set to avoid the sagging problem.

Regards

The Martindale Family
29 Jane Circuit
TOORMINA NSW 2452
AUSTRALIA

phone: 61 2 66584767
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KR>Question for the group

[Dene Collett (SA)]

Hi Dan
First, thanks for the reply I will reply privately later. If your wood
dated 1986 aint fit for KR work then my project is certainly doomed. The
wood for my longerons and some of the other cross members in my project is
over 100 yrs old, thats right 100! It is douglas fir and the best example of
aircraft wood you ever saw.
Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net
P.S. Checkout www.whisperaircraft.com

- Original Message -
From: "Dan Heath" 
To: 
Sent: Monday, January 19, 2004 1:40 AM
Subject: Re: KR>Question for the group


RE I'm assuming all the spruce I bought in 1986
is still safe to use

Bernie,

I was told by the man I buy my cabinet making wood from, that it does not
suffer fatigue as other materials do. I think that if you take care of it,
it will last forever.

This is only an opinion, but I see no harm in putting a cross member in both
 but if any of the 2S people respond, they will know better than I as I am
only a 2 person.

See N64KR at http://KR-Builder.org - Then click on the pics

Daniel R. Heath - Columbia, SC

da...@kr-builder.org

See you in Mt. Vernon - 2004 - KR Gathering

See our EAA Chapter 242 at http://EAA242.org

---Original Message---

From: KRnet
List-Post: krnet@list.krnet.org
Date: Sunday, January 18, 2004 6:18:16 PM
To: KRnet
Subject: KR>Question for the group

I am dry fitting the belly cross members prior to gluing and have hit a
road block (with which I am hoping you all can help me);

* My original KR2 plans (dated 10/08/86) show a belly cross member
at station "D" only .
* Drawing "A" (of my new KR2S supplement..Sept/92...just received)
shows a belly cross member at station "E" only.
* I looked at Mark Langford's web site and it looks like he
installed 1 cross member is located at station "E" only.

I was wondering what the downside would be to installing a belly cross
member at BOTH "D" and "E".
Mark's fuselage looks so good I should probably stick with station "E"
only...any ideas or comments?

Thanks for your help...I'm really getting energized after a 15 year
hiatus from this projectI'm assuming all the spruce I bought in 1986
is still safe to use. I'd sure hate to buy all that wood again!

Bernie McLean
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KR>rear spar HELP

[Dene Collett (SA)]

> Dene: Hello
>
> I think you will find that the CG remains very close to where it was
> originally.  What will move back is your center of lift.  The CG may
> still be within limits but you would need to check. Moving the Center of
> lift rearward would increase the work load of your horizontal stabilizer
> as it will need to provide more down pressure to balance your load
> /lift. I'm not saying it couldn't or shouldn't be done just realize what
> he results will be and adjust accordingly.
> Russ  Breckenridge, MN  asir...@702com.net
>
>
>
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> --
--
Hi Russ
The way I see it is this:
In stead of using lead weights or a longer engine mount to get the planes
Cof G in the correct position, I am proposing moving the wing back to bring
the C of G range to meet the plane's "balance point". Remember the C of G of
an aircraft is determined by the wing or more accurately the airfoil used
and not the fuselage. The aim is to get the "balance point" of the fuselage
and wing combination to match up with the calculated Cof G range of the
airfoil. You are correct in saying that the c of g will hardly move but it
will now be 28mm further forward in the allowable range. If I do move the
airfoil relative to the spars it will only need to be moved by 28mm which
will still keep the centre of lift on the spar although it will be nearer
the leading edge than the aft edge. This mod is not to correct a cg problem
but to acccomodate a rear spar that was built 4 or 5mm too tall.
The spars are by default much stronger than required anyway so I might just
shave off a couple of mm from the spar and stop stressing.
Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net
P.S. Checkout www.whisperaircraft.com

- Original Message -
From: "francis fenlason" 
To: "'KRnet'" 
Sent: Monday, January 19, 2004 4:05 PM
Subject: RE: KR>rear spar HELP

KR>leveling the boat

[Dene Collett (SA)]

I have just finished putting the two centre spars together and am getting
ready to fit them in the fuz. I have seen this subject come up a number of
times but never seen this approach and was wondering what you guys thought
of my idea.
Seeing that the top longeron forms a banana when bending the sides to form
the fuse, I thought of using the firewall as the datum and using that as the
vertical or plumb surface and working out everything else from that.
Comments??

One more question if I may: I can't make up my mind whether to install the
spars in the fuz first and then rig the outer spars to them (install
w.a.f"s)or rigging the outers first before installing the centre spars in
the fuz. Pro's and con"s of each??

Tanks.

Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net
P.S. Checkout www.whisperaircraft.com

KR>rear spar HELP!

[Dene Collett (SA)]

Hi guys
According to my calcs, the centre of the rear spar is not dead on 75% chord.
It is on 75.27%. Using compufoil I placed the rear spar at this location and
set it to distended depth. I then worked out that the tallest part of the
spar would be at 74.088% chord. This also happens to be the leading edge of
the spar.At this location the spar is 4.409" tall or 111.98 (112mm). Is this
all correct? I have gone over this three times now and something tells me I
am missing something. I suppose I should mention that this is for the stub
wings using the AS 5048 airfoil. Sometime in the past I worked out something
in the region of 117mm if my memory serves me correctly. I sure hope that I
AM missing something because I have a rear spar ready for installation built
117mm tall!!! HELP??
Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net
P.S. Checkout www.whisperaircraft.com

KR>GK 1 Aircraft

[Dene Collett (SA)]

Hi Jim
GK-1 was the brainchild of a chap by the name of Garth Kopke (hence GK). He
used to fly crop dusters for one of the big veg producers a while ago. He
was tragically killed in a crash while contracting out to fly fire bombers
in Lesotho a number of years ago.(you remember the huge veld fires they had
there). After his death the plane was dismantled and sent to Russel Philips
for safe keeping in Port Elizabeth. Russell eventually bought it from
Garth's dad and assembled it to fly himself. He sold it a short while
later.I have no knowledge of it after that. The main difference of the GK1
from the KR1 is the wing construction and the way it fastens to the
fuselage.The entire wing is one piece and slips into the fuselage from
underneath and is held in place by only two bolts if I am not mistaken. That
Honda motor was bought from Russel Philips originally who first had it in a
citabria. According to Russell, that plane is SUPERFAST.When my good friend,
Rob V.D. Merwe still had his 2.0L type IV powered KR2 (ZS-WEC) they flew
together once. Well according to Rob they would be flying side by side with
the KR flat out and GK1 at his wing tip. Russell would open the throttle and
literally dissapear in the distance. What news can you tell me about GK-1? I
saw Russell today and witnessed the third flight and the first flight of his
new self designed and built whisper motorglider with two people
aboard---MAGIC. See websight link below.
Well I hope that is the info you were looking for.
Cheers
Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net
P.S. Checkout www.whisperaircraft.com

- Original Message -
From: "JIM VANCE" 
To: "krnet" 
Sent: Monday, January 12, 2004 3:12 PM
Subject: KR>GK 1 Aircraft


At our EAA chapter meeting yesterday, I was given the owner's manual for a
GK-1 aircraft.  It is powered by a Honda engine with a reduction drive.  It
looks exactly like a KR-1.  The registration number on the aircraft on the
cover is ZU-BLJ.

Can anyone tell me the lineage of the GK-1?

Jim Vance

va...@claflinwildcats.com
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KR>Not quite KR

[Dene Collett (SA)]

Guys,I know it isn't friday but I just have to tell someone this.I just got
the good news that late yesterday afternoon my ftriend made the maiden
flight in his "Whisper" motor glider that he has been building for the past
two years and designing for many more before that!Aparently it flies just
like the dream it was meant to be.The link to his sight is below. He will
probably be updating it shortly, possibly with some video footage. I believe
there has been such interest in the kit that he is offering that some folks
have driven 1000KM just to see it in the flesh and to place their orders!
Just to make this message KR related, I had the inspector check out my rear
centre spar last night--OK to close. One step closer!
At least I have spread the good news somewhere, I feel much better now.
Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net
P.S. Checkout www.whisperaircraft.com

KR>slightly off subject

[Dene Collett (SA)]

Best wishes for 2003.
Guys here is a link to a friend of mine's websight who has spent the best
part of the last two years designing and building this motorglider and will
be offering the kit soon. I think he may be doing the first test flight as I
type this. I don't know how this will fit in with your sport pilot category,
but it might be a way for some of you to stay in the air.
www.whisperaircraft.com


Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net

KR>drill bits

[Dene Collett (SA)]

> I used a regular 3/16" twist drill bit, about a foot long.  They sell them
> at Home Depot and other stores (although I know that doesn't help you).>
N56ML at hiwaay.net
> see KR2S project N56ML at http://home.hiwaay.net/~langford
Hi Mark and others
Cheers Mark, I have seen the drilling fixture that you made and will
definately do the same. We are metric but it isn't a problem to get drill
bits in inches, it is just that I have never seen a longer than normal drill
bit anywhere on the shelves here. Maybe I just havn't looked hard enough.

I haven't made much progress with the crank taper torque test lately apart
from picking up a scrap crank and having the hub pulley machined to accept
the flange that must still be welded on. Will post the results as soon as I
have some.
Thanks again Mark.
Cheers
dene.coll...@telkomsa.net

VW welded hub-was KR>drill bits

[Dene Collett (SA)]

Ron said:
> Rene said;
> I haven't made much progress with the crank taper torque test lately apart
Well Ron this one will be completely 100% safe as it will be fastened to a
trashed crank that has been secured somehow to a test jig. To the "welded
flange will be
fastened a looong lever arm from which a lot of lead weights will be hung
untill the crank or hub or what ever fails.No prop, no "motor", no
danger.Get it. (See your signature line)
As I have said before, the aim of this test is purely to see just how much
TORQUE it will take to cause a failure of the crank with the standard taper
and key (disregarding ALL other forces).Depending on the results obtained
from this test, further testing
will be done on a running motor bolted to a test stand with a hub fabricated
as one unit but still using the standard taper on the end of the crank with
a few other ideas as well.
Hopefully this will now put to rest the idea that I plan on flying behind a
welded hub or standing in front of one for that matter.
By the way my name is Dene (as in Dean) not Rene as above.
Sorry for being so jumpy but I think I have explained myself enough times
now for everybody to get the picture that I have absolutely no intension of
using a welded hub of any kind. My interest lies solely in the fact that the
standard taper can aparently handle the torque loads of the motor.
Build well fly safe
Dene Collett
mailto: dene.coll...@telkomsa.net

KR>drill bits

[Dene Collett (SA)]

Hi Guys
I was just wondering what type of drill bits you guys were using to drill
the bolt holes through the spar for the waf's mounting bolts. Do you use a
normal twist drill as for steel work or do you use the woodworking spade
type . I havn't seen an extra long twist drills here anywhere so was just
wondering.
Dene Collett
South Africa
mailto: dene.coll...@telkomsa.net