KR> KR2 CG Range

[jon kimmel]

Be careful...the cg range may not be the same for a kr2s as a kr2.  It is
based on percentage of Mean aerodynamic chord and that changes with wing
planform and the planform is different for the kr2s.  If you have the
extensions the range will probably be smaller than 8" to 16".   I have
started running the numbers for mine and it looks like the aft limit is
going to be slightly forward of 16".
On Aug 15, 2013 9:05 PM,  wrote:

> Alan,
>
> I've got link to a spreadsheet on my web site for the C.G. Range. However I
>  do have a KR2S so yours might be slightly different.
>
> http://www.robert7721.com/WeighIn.html
>
> Basically C.G Range is 8 - 16" of the wing cord. For my plane I used the
> firewall as the 0 point. Therefore the wing CG range is 22.5 to 30.5 inches
> (relative to the firewall). That is the same for either KR2 or KR2S. Some
> will  say not to use the back 2". But I believe you can with the KR2S.
>
> Frame G limits are approx +- 6 G at 900 pounds if I recall correctly. If
> you are willing to lower your G rating you can up the max load - but be
> careful.  More weight tends to go aft in the KR2 it seems and this is the
> real
> issue.
>
> Thanks,
>
> Rob Schmitt
> N1852Z
>
>
>
> In a message dated 8/15/2013 8:19:24 P.M. Central Daylight Time,
> beaglea109 at icloud.com writes:
>
> Hello  all,
>
>
> I have recently joined this august group due to my purchase of  a KR2
> (frame # 2001).  I have fitted a new motor (Jabiru 2200 85hp),  repaired
> and
> tweaked the overall airframe to ensure it is airworthy.  I  have now flown
> it
> for 7.5hrs and have decided the aircraft has many  characteristics of a WW2
> fighter (ex RAAF FLTLT).
>
>
> Therefore,  and to the delight of all the kids that see it, I have painted
> it in the  colours of a P51 Mustang!!
>
>
> The colours will be familiar to  Mustang enthusiasts as the colour scheme
> of the 47th Fighter Squadron, 15th  Fighter Group, VIIth Fighter Command,
> 20th U.S. Army Air Force South Field,  Iwo Jima, Kazan Islands, Japan,
> dated
> 1945.
>
>
> I wonder if anyone  could help me with a few questions I have:
>
>
> 1. What is the preferred  CG range for KR2's?
>
> 2. What are the frame 'G' limits?
>
> 3. What  have people found is a successful tail wheel fit out as an
> alternative to the  standard system.  The aircraft is fun to fly in every
> respect
> EXCEPT the  landing roll, especially in a crosswind.  I have fitted a Matso
> 6" as  seen in the photo, but have not yet had a chance to test fly it.  As
> soon  as I do, I will report back to the group.
>
>
> P.S.  The aircraft  in the back ground is a beautifully restored Tiger Moth
> owned by Graeme  Atchinson, a local flying identity here in Townsville.  I
> fly the Tiger  regularly and can say it is a stable kitten in the ground
> compared to the  KR2!!
>
>
> Thank you all for a marvellous network.
>
>
> Regards,  Alan
>
>
> Alan Middleton
>
> Bluewater Airport
>
> Townsville,  Australia
>
> +61407356948
>
> ___
> Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search.
> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
> please see other KRnet info at http://www.krnet.org/info.html
> see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change
> options
>

KR> Fly in BBQ Marion KS

[Robert7721 at aol.com]

Reminder, weekend flying opportunity in Kansas this coming Saturday.


In a message dated 8/4/2013 8:49:47 P.M. Central Daylight Time,  
Robert7721 at aol.com writes:

Terry Chezik will be having his annual Fish Fry/BBQ on  Saturday Aug 17th 
at Marion Airport. Start time is approx 5-6 pm for the  food. Fun starts 
before then. Several planes fly into this event  from around the KS and MO area 
each year. Hope to see a few KR  pilots.  
Thanks,

Rob Schmitt
N1852Z
_www.robert7721.com_ (http://www.robert7721.com/) 

MARION MUNI (43K)
N38 20, W096 59

MARION, KS 

Runway Length:  2745
Elevation: 1390
Magnetic Variation: 7  E 

KR> KR2 CG Range

[Robert7721 at aol.com]

Alan,

I've got link to a spreadsheet on my web site for the C.G. Range. However I 
 do have a KR2S so yours might be slightly different.

http://www.robert7721.com/WeighIn.html

Basically C.G Range is 8 - 16" of the wing cord. For my plane I used the  
firewall as the 0 point. Therefore the wing CG range is 22.5 to 30.5 inches  
(relative to the firewall). That is the same for either KR2 or KR2S. Some 
will  say not to use the back 2". But I believe you can with the KR2S.

Frame G limits are approx +- 6 G at 900 pounds if I recall correctly. If  
you are willing to lower your G rating you can up the max load - but be 
careful.  More weight tends to go aft in the KR2 it seems and this is the real  
issue.

Thanks,

Rob Schmitt
N1852Z



In a message dated 8/15/2013 8:19:24 P.M. Central Daylight Time,  
beaglea109 at icloud.com writes:

Hello  all,


I have recently joined this august group due to my purchase of  a KR2 
(frame # 2001).  I have fitted a new motor (Jabiru 2200 85hp),  repaired and 
tweaked the overall airframe to ensure it is airworthy.  I  have now flown it 
for 7.5hrs and have decided the aircraft has many  characteristics of a WW2 
fighter (ex RAAF FLTLT).  


Therefore,  and to the delight of all the kids that see it, I have painted 
it in the  colours of a P51 Mustang!!  


The colours will be familiar to  Mustang enthusiasts as the colour scheme 
of the 47th Fighter Squadron, 15th  Fighter Group, VIIth Fighter Command, 
20th U.S. Army Air Force South Field,  Iwo Jima, Kazan Islands, Japan, dated 
1945.


I wonder if anyone  could help me with a few questions I have:


1. What is the preferred  CG range for KR2's?

2. What are the frame 'G' limits?

3. What  have people found is a successful tail wheel fit out as an 
alternative to the  standard system.  The aircraft is fun to fly in every 
respect 
EXCEPT the  landing roll, especially in a crosswind.  I have fitted a Matso 
6" as  seen in the photo, but have not yet had a chance to test fly it.  As 
soon  as I do, I will report back to the group.


P.S.  The aircraft  in the back ground is a beautifully restored Tiger Moth 
owned by Graeme  Atchinson, a local flying identity here in Townsville.  I 
fly the Tiger  regularly and can say it is a stable kitten in the ground 
compared to the  KR2!!


Thank you all for a marvellous network.


Regards,  Alan


Alan Middleton

Bluewater Airport

Townsville,  Australia

+61407356948  

KR> tricycle landing gear-mains

[Robert7721 at aol.com]

Joe,

If you've got the standard Dan Deihl gear legs, you don't need to  worry.  
They are mounted flush with the rear main spar. Just make sure  when you 
install your nose gear that the aircraft is level, not nose down. That  might 
cause some adverse takeoff behavior.

Photo on web site at 

http://www.robert7721.com/Controls.html


Thanks,

Rob Schmitt
N1852Z
Kansas City




In a message dated 8/14/2013 9:58:28 P.M. Central Daylight Time,  
cruzj12 at frontiernet.net writes:

Can  someone tell me the angle of the main gear legs for a tricycle landing 
gear ,  the swept back angle from the spar? I mounted my gear legs and they 
seem to be  angled further aft than what I've seen on other KR's.I haven't 
measured the  distance from the aft side of main spar but I would  say 8 to 
9 " to the  center of the leg where the wheel axle will mount. What is the 
envelope for  either landing gear configuration forward or aft of the C of G 
plus 5" minus  10"? 

Joe Cruz  
Spencer,NY

KR> Wood pricing.

[michael inskeep]

that's ok  ,I will have parts youll need like grove brakes ,wheels and
other such stuff . it will be no the net soon
thanks
 mike


On Thu, Aug 15, 2013 at 9:14 PM, Adam Tippin  wrote:

> Thanks for the offer. But I'm really interested in ground up build.
> On Aug 15, 2013 9:13 PM, "Adam Tippin"  wrote:
>
> > Its from wicks.
> > On Aug 15, 2013 8:54 PM, "Richard Kaczmarek" <
> > fastlittleairplanes at gmail.com> wrote:
> >
> >> Who gave you the price? Wick's aircraft supply has the wood kit listed
> in
> >> their catalog that should give you a good comparison.
> >>
> >> Richard
> >> KR-2 waiting FAA inspection
> >> Marysville, OH
> >> On Aug 15, 2013 8:30 PM, "Adam Tippin"  wrote:
> >>
> >> > I received a quote of 2,198 for all the wood for a kr2s. Does this
> price
> >> > seem fair?
> >> > ___
> >> > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search
> .
> >> > To UNsubscribe from KRnet, send a message to
> KRnet-leave at list.krnet.org
> >> > please see other KRnet info at http://www.krnet.org/info.html
> >> > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to
> >> change
> >> > options
> >> >
> >> ___
> >> Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search.
> >> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
> >> please see other KRnet info at http://www.krnet.org/info.html
> >> see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to
> >> change options
> >>
> >
> ___
> Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search.
> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
> please see other KRnet info at http://www.krnet.org/info.html
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> options
>



-- 

Michael

KR> Wood pricing.

[Adam Tippin]

Thanks for the offer. But I'm really interested in ground up build.
On Aug 15, 2013 9:13 PM, "Adam Tippin"  wrote:

> Its from wicks.
> On Aug 15, 2013 8:54 PM, "Richard Kaczmarek" <
> fastlittleairplanes at gmail.com> wrote:
>
>> Who gave you the price? Wick's aircraft supply has the wood kit listed in
>> their catalog that should give you a good comparison.
>>
>> Richard
>> KR-2 waiting FAA inspection
>> Marysville, OH
>> On Aug 15, 2013 8:30 PM, "Adam Tippin"  wrote:
>>
>> > I received a quote of 2,198 for all the wood for a kr2s. Does this price
>> > seem fair?
>> > ___
>> > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search.
>> > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
>> > please see other KRnet info at http://www.krnet.org/info.html
>> > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to
>> change
>> > options
>> >
>> ___
>> Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search.
>> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
>> please see other KRnet info at http://www.krnet.org/info.html
>> see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to
>> change options
>>
>

KR> Wood pricing.

[michael inskeep]

Richard,
are you looking for a project, I am  going to sell mine. I haven't listed
it, because I have so much extra stuff I haven't got to organize it yet .
if interested mail me off line. For others who is reading this I will make
it available soon on kr net first.


On Thu, Aug 15, 2013 at 8:30 PM, Adam Tippin  wrote:

> I received a quote of 2,198 for all the wood for a kr2s. Does this price
> seem fair?
> ___
> Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search.
> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
> please see other KRnet info at http://www.krnet.org/info.html
> see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change
> options
>



-- 

Michael

KR> Wood pricing.

[Richard Kaczmarek]

Who gave you the price? Wick's aircraft supply has the wood kit listed in
their catalog that should give you a good comparison.

Richard
KR-2 waiting FAA inspection
Marysville, OH
On Aug 15, 2013 8:30 PM, "Adam Tippin"  wrote:

> I received a quote of 2,198 for all the wood for a kr2s. Does this price
> seem fair?
> ___
> Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search.
> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
> please see other KRnet info at http://www.krnet.org/info.html
> see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change
> options
>

KR> 2180 VW Engine Relocation

[Sid Wood]

After much unheeded advice, much soul searching and nearly crashing the 
airplane, The Move for the 2180 VW is underway.  The aluminum spacer blocks 
are in place now pushing the engine mount forward by 2-inches.  Wheel base 
is increased by 1-1/4 inches with a spacer block at the fire wall for the 
nose wheel strut.  The Revmaster oil cooler, larger oil pump, engine-driven 
fuel pump, engine-mounted oil filter and engine-mounted oil pressure sender 
are in place.  Revmaster still owes me an oil side drain assembly.  Some 
minor rerouting will be required, but I am pleasantly surprised that the 
engine control cables and wire connections will still fit nicely. 
Relocating the air filter, carb heat and cabin heat air circuits are waiting 
their turn.  I still need to clean up all those pesky details.  Also 
remaining is the new cowl, cylinder cooling ducts and induction for the oil 
cooler.  While I am glassing, will also make new wing attach fairings and a 
replacement nose wheel pant.  I really should move the main wheels 2-inches 
further aft, but that will just have to wait another era.

I still plan to be at the Gathering even as my airplane languishes in the 
shop another four days.

Sid Wood
Tri-gear KR-2 N6242
Mechanicsville, MD, USA

KR> I would like to join your mailing list.

[Larry Flesner]

Welcome, it looks like you are on board.  Tell us about yourself, 
name, where do you live, are you building, etc..

Larry Flesner

KR> I would like to join your mailing list.

[ppaulvsk]

See you ib October.?

Sent from my Samsung Galaxy S?4

KR> KRnet Digest, Vol 1, Issue 152

[smwood]

Joe,
The main wheels have to be far enough aft so that the tail does not hit the 
ground every time some one gets in or out of the airplane.  You don't know 
what the CG is until the airplane is completed.  If the wheels are too far 
aft, then will not have enough low speed elevator authority to rotate for 
take off and for landing; not a problem for KR aircraft.
I should have put my main wheels about 2 inches further aft to preclude 
dumping the tail with a passenger on board and me trying to climb in or out. 
(Been there, done that.)

Sid Wood
Tri-gear KR-2 N6242
Mechanicsville, MD, USA


> Can someone tell me the angle of the main gear legs for a tricycle landing 
> gear , the swept back angle from the spar? I mounted my gear legs and they 
> seem to be angled further aft than what I've seen on other KR's.I haven't 
> measured the distance from the aft side of main spar but I would  say 8 to 
> 9 " to the center of the leg where the wheel axle will mount. What is the 
> envelope for either landing gear configuration forward or aft of the C of 
> G plus 5" minus 10"?
>
> Joe Cruz
> Spencer,NY
>
> End of KRnet Digest, Vol 1, Issue 152
> *
> 

KR> KRnet Digest, Vol 1, Issue 152

[jon kimmel]

You may not know what the cg of the basic aircraft is until it is finished,
but you should know the aft cg limit before it is finished.  The plans for
the kr2 state it is 35% mac...of course mac will vary for a kr2s or if you
change the planform in any other way.

As long as the wheels are aft of the aft limit you shouldn't set it on the
tail.

https://sites.google.com/site/mykr2stretch/
https://sites.google.com/site/mykr2stretch/parts-for-sale
On Aug 15, 2013 1:23 PM, "smwood"  wrote:

> Joe,
> The main wheels have to be far enough aft so that the tail does not hit
> the ground every time some one gets in or out of the airplane.  You don't
> know what the CG is until the airplane is completed.  If the wheels are too
> far aft, then will not have enough low speed elevator authority to rotate
> for take off and for landing; not a problem for KR aircraft.
> I should have put my main wheels about 2 inches further aft to preclude
> dumping the tail with a passenger on board and me trying to climb in or
> out. (Been there, done that.)
>
> Sid Wood
> Tri-gear KR-2 N6242
> Mechanicsville, MD, USA
>
>
>  Can someone tell me the angle of the main gear legs for a tricycle
>> landing gear , the swept back angle from the spar? I mounted my gear legs
>> and they seem to be angled further aft than what I've seen on other KR's.I
>> haven't measured the distance from the aft side of main spar but I would
>>  say 8 to 9 " to the center of the leg where the wheel axle will mount.
>> What is the envelope for either landing gear configuration forward or aft
>> of the C of G plus 5" minus 10"?
>>
>> Joe Cruz
>> Spencer,NY
>>
>> End of KRnet Digest, Vol 1, Issue 152
>> ***
>>
>>
>
>
> __**_
> Search the KRnet Archives at 
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> .
> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
> please see other KRnet info at http://www.krnet.org/info.html
> see 
> http://list.krnet.org/mailman/**listinfo/krnet_list.krnet.orgto
>  change options
>