Re: KRnet> KR Gathering 2025

[Chris Pryce via KRnet]

Yeah. There was no way I could make it to Mt Vernon in one day without
flying at night. I do not have the required equipment for night VFR so I
ended up landing at Hastings, Nebraska on the first day to sleep.

On Tue, Sep 17, 2024, 08:59 Oscar Zuniga via KRnet 
wrote:

> Netters;
>
> Very interesting and inspiring to read about Chris Pryce's flight to MVN
> for this year's Gathering.  I often sit with SkyVector and a few minutes of
> dreaming time to run some what-ifs and I had run something similar for next
> year in N335KC.  It's roughly equal legs, three fuel stops, but who knows
> how long it might take to fly it from where I am in southern Oregon?
>
> Medford, OR (KMFR) to Twin Falls, ID (KTWF)- 429 statute miles via
> direct.  Fuel stop #1
> KTWF - Laramie, WY (KLAR)- 461 statute via direct.  Fuel stop #2
> KLAR - Marysville KS (KMYZ) - 486 statute via direct.  Fuel stop #3
> KMYZ - KMVN - 430 statute via direct.
>
> Total: 1,806 miles.  If the plane could average 130 MPH over the ground
> (ambitious, to be sure), that would be 14 flight hours.  No way I'm
> attempting that all in one day, especially since MVN is two hours ahead of
> Pacific time.  Lifting off at maybe 5 AM here, it would already be 7 AM at
> Mount Vernon and 14 hours plus fuel stops would be out of the question.  As
> Dirty Harry reminded us, "a man's got to know his limitations".
>
> Oscar Zuniga
> Medford, OR
> KR 1-1/2 N335KC "Sunbeam"
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Re: KRnet> Gathering

[Chris Pryce via KRnet]

I made it home yesterday in time for dinner. 12.7 hours of flying with two
fuel stops. I had a great time seeing everyone. Can't wait for next year.

Chris Pryce
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Re: KRnet> one more wake-up !!!

[Chris Pryce via KRnet]

I flew 8 hours today and made it to Hastings, NE. I'll be there before
lunch!

Chris Pryce

On Wed, Sep 11, 2024, 19:16 G R Pickett via KRnet 
wrote:

> On my way in the morning.  Rough ETA is 1- 5 PM.
>
> Griff
>
>
>
> *From:* KRnet  *On Behalf Of *Larry Flesner
> via KRnet
> *Sent:* Wednesday, September 11, 2024 6:48 PM
> *To:* krnet@list.krnet.org
> *Cc:* Larry Flesner 
> *Subject:* KRnet> one more wake-up !!!
>
> As my daughters used to say, "one more wake-up" and I'm off to Mt.Vernon.
> I have my second truck load of Gathering items loaded, cloths packed, and
> I'm ready to boggy at sunup tomorrow.  Weather looks wet but several are
> already at Mt.Vernon.  We have one of the most standard plans-built KR2S
> already on the field (Rob Schmitt)to look over and the forums should
> answer any questions anyone wants answered.  No reason to cancel plans.
>
> See you in Mt.Vernon
>
> Larry Flesner
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Re: KRnet> planned Gathering schedule

[Chris Pryce via KRnet]

As long as the weather allows it, I am more than happy to cover for Mark.

On Sat, Sep 7, 2024, 15:35 Larry Flesner via KRnet 
wrote:

>
> On 9/7/2024 3:14 PM, Larry Flesner via KRnet wrote:
> > He has suggested that Chris Price take his place with Jeff Scott on
> > Saturday to cover engines,
>
>
> 
>
> I should have included that Mark recommended Chris be included to cover
> Corvair engines.  John B. and John S. can help cover questions on V.W.
> and Jeff can advise on aircraft systems.  Bring your questions and we'll
> see you in Mt.Vernon.
>
> Larry Flesner
>
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Re: KRnet> Recommended viewing

[Chris Pryce via KRnet]

I was making a joke that was apparently missed. I enjoyed the video.

On Thu, Aug 29, 2024, 17:52 Larry Flesner via KRnet 
wrote:

>
> On 8/29/2024 6:14 PM, Chris Pryce via KRnet wrote:
> > I don't knowI'm super upset about the cruise and max speed numbers
> > posted for my airplane. It's so much faster than that.
> > Chris Pryce
>
>
> +
>
> So where did Luis get the numbers?  I really doubt he just made up the
> numbers for all the photos.  Yours was listed at 160 mph cruise and you
> claim 170 mph cruise.  I wouldn't say that is "so much faster" and
> anything to get  "super upset" about.
>
> Mike's comment "As a finished product though, it's not ready for
> presentation.  . . not with needing so much editing."  Except for some
> "professional" articles by Kit Planes with a couple of video interviews,
> no one raised their hand to put in the effort to produce a video to
> celebrate the 50th anniversary of the KR. Luis, who is not a
> professional, volunteered his time an effort to help celebrate the
> occasion.  It doesn't take much character to call the baby ugly when you
> won't even help dress it.
>
> Thanks again, Luis
>
> Larry Flesner
>
>
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Re: KRnet> Recommended viewing

[Chris Pryce via KRnet]

I don't knowI'm super upset about the cruise and max speed numbers
posted for my airplane. It's so much faster than that.

P.S. don't shoot me, I don't care.

Chris Pryce

On Thu, Aug 29, 2024, 15:41 Larry Flesner via KRnet 
wrote:

>
>
> Nice collection of KR photos . . . along with loads of mis-information.
> Pictures mis-labeled for a variety of reasons.  This thing is a blight.
> Mike Stirewalt
> KSEE
>
> ++
>
> That one line certainly did a ground loop before it reached the last
> period.  I had to go back and watch it again to see if I could find the
> "loads of mis-information and mis-labeled photos.
> All the info for the photos came directly from the builders / current
> owners that submitted the photos for the project.  I think, and thank Luis,
> who volunteered his time and effort to put the video together to celebrate
> the 50th anniversary of the KR.  Any mistakes were purely unintentional and
> calling it a "blight" seems a bit harsh.  Most netters would probably
> appreciate a positive correction of any mistakes made in the video rather
> than a simple condemnation.
>
> Larry Flesner
>
>
>
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Re: KRnet> Diehl accessory case - alternator stator ring

[CHRIS GARDNER via KRnet]

Thanks BillI’ll give him a callChris


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On Sunday, July 28, 2024, 19:49, Bill Page via KRnet  
wrote:

I understand that Art at Great Plains is in hospital and may not come out. The 
person you need to contact is Jarred Cline at Soulflyer Aviation. 402-637-8572.
On Sun, Jul 28, 2024, 3:05 PM Chris Gardiner via KRnet  
wrote:

Fellow KR heads;

Does anyone know where I can get a replacement stator ring alternator for the 
Great Plains Diehl accessory case?
The Great Plains web site looks like it’s no longer available?
Did they go out of business?
Also would like to find a replacement rectifier for this set up.
Any help appreciated to locate these items.
Thanks
Chris Gardiner
KR2S  C-GKRZ


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Re: KRnet> Diehl accessory case - alternator stator ring

[Chris Gardiner via KRnet]

Thanks for the quick reply Victor and Mike.I met Dan Diehl years ago at one of the KR Gatherings and have his landing gear on my plane.Maybe a while before I can get the engine out of the plane to access the accessory case for pictures.Can you forward his email address to me for when I’m ready?Sorry to hear the new owner of Great Plains is ill.RegardsChris GardinerSent from my iPhoneOn Jul 28, 2024, at 17:29, MS  wrote:
The original GP alternator wasn't very strong . . . 16 Amps?  Somewhere (I'm pretty sufre it was on the GP website which, as you mention, is temporarily down) I recently came across the info that GP has upgraded their stator alternator to something substantially stronger . . . a welcome improvement.Hopefully Dan will sort you out.  Mike StirewaltKSEE





On Sunday, July 28, 2024 at 02:07:04 PM PDT, victor taylor via KRnet  wrote:





    Hi Chris, I reached out to Dan Diehl for you. He said the owner of Great Plains is in the hospital now for internal bleeding from a tic bite. He has been there for 30 days now. Dan said to send him pictures of the parts you need. He said he had used 3 different parts in 30 years. He owns Diehl Aeronautical in Jenks, OK. Keep us posted. Victor Taylor> On Jul 28, 2024, at 16:05, Chris Gardiner via KRnet <krnet@list.krnet.org> wrote:> > Fellow KR heads;> > Does anyone know where I can get a replacement stator ring alternator for the Great Plains Diehl accessory case?> The Great Plains web site looks like it’s no longer available?> Did they go out of business?> Also would like to find a replacement rectifier for this set up.> Any help appreciated to locate these items.> Thanks> Chris Gardiner> KR2S  C-GKRZ> > > Sent from my iPhone> -- > KRnet mailing list> KRnet@list.krnet.org> https://list.krnet.org/mailman/listinfo/krnet-- KRnet mailing listKRnet@list.krnet.orghttps://list.krnet.org/mailman/listinfo/krnet

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KRnet> Diehl accessory case - alternator stator ring

[Chris Gardiner via KRnet]

Fellow KR heads;

Does anyone know where I can get a replacement stator ring alternator for the 
Great Plains Diehl accessory case?
The Great Plains web site looks like it’s no longer available?
Did they go out of business?
Also would like to find a replacement rectifier for this set up.
Any help appreciated to locate these items.
Thanks
Chris Gardiner
KR2S  C-GKRZ


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Re: KRnet> Congratulations Chris Pryce

[Chris Pryce via KRnet]

Thanks! The KR-25 was the FAA reading my handwriting wrong and me being too
lazy to correct it.

I recently retired from the Air Force and am 7 months in at United Airlines
flying 737s out of SFO. Hence why I missed Oshkosh this year.

No promises, but I will be bidding for time off in Sept to see if I can
make the gathering.

Chris Pryce
Vacaville, CA

On Sat, Jul 27, 2024, 17:25 Larry Flesner via KRnet 
wrote:

>
> While in my 8'X10' home library I was leafing through the August 2024
> (latest issue) of Kitplanes magazine.  A yee haa moment occurred when I
> turned to page 83 and found an awesome air photo of Chris Pryce in his
> beautiful Corvair powered KR2.  Way to go Chris !!  Many of us would
> like to see you and the KR at the Gathering.  I did notice that Chris'
> KR (N722KC) is listed in the FAA registry as a KR-25, whether by
> intention or error.  Which is it Chris and what military iron are you
> piloting now days?
>
> Larry
>
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Re: KRnet> 2024 Gathering

[Chris Collins via KRnet]

Hello KR Family: I am hoping this post goes through as this is my first attempt.  I have the Board Room  reserved on Friday and Saturday for the gathering.  I also have the large Banquet Room reserved on Saturday after 3:00 p.m. (someone slipped in and scheduled a family reunion with the restaurant from 11:00 a.m. to 3:00 p.m. on Saturday).  I believe we can make the Board Room suitable for the inside activities on Saturday. I have plenty of firewood and tables for registration/sales.  Please call me anytime at (618) 315-5452 if you have any questions or concerns. I look forward to seeing everyone in September! Chris Collins – KMVN(618) 315-5462     Sent from Mail for Windows From: Larry Flesner via KRnetSent: Saturday, July 6, 2024 4:30 PMTo: krnet@list.krnet.orgCc: Larry FlesnerSubject: Re: KRnet> 2024 Gathering  > > Mark,> > My concern too.  I also don't hear anyone making any plans / > scheduling for the Gathering.  I thought I made it clear to the > "planning group" that I'm on the sidelines this year after 20 years of > hosting or co-hosting.  I'll be 80 come February and it's time for the > "kids" to take over.  Other than John, I've not heard any voices or > seen anyone raise their hand.> > Get the hours flown off.  I hope to see that bird at Mt.Vernon.> > Larry> ++  I thought I corrected the address for that post to go to Mark J. only.  As it is already out there, someone might want to communicate with the Bonnie Cafe to confirm we, the Gathering, can hold our banquet meal in the Conference room and arrange for set-up, confirm with Chris Collins that the Gathering will have complete use of the conference room for any forums we might want, plan and secure leaders for the forum, arrange for a P.A. (from me) in the conference room for forums / banquet, arrange for a P.A. (from me) on the flight line if attendees want an overview from each builder on the KR's that attend, arrange for awards if wanted, sounds like John has apparel covered, check with Chris to insure firewood at the lake,   desk for apparel sales and registration forms (if wanted) and extra table for sale items, .X..X . I'll help where possible but if I were capable of hosting again I'd also still be flying 211LF. 🙁 This will be Gathering #34 for me, every one since 1990 except the one in California.   Let's make the Gathering interesting and informative enough to justify people traveling from across the U.S. and around the world to attend.  Let's not let the Gathering fade away to lack of effort. See you at Mt.Vernon. Larry Flesner -- KRnet mailing listKRnet@list.krnet.orghttps://list.krnet.org/mailman/listinfo/krnet 
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KRnet> vw based crankshaft fail

[Chris Prata via KRnet]

this is interesting, crank failed and I believe some KR's have these engines. 
not sure if we will learn anything from this

(video shows the broken crank)

https://youtu.be/x5y7ZeIcSo8?si=fsuiZ8B3K3oh4ONl


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Re: KRnet> what's this noise????

[Chris Gardiner via KRnet]

Mark,
Never heard that sound before but it sounds like engine tear down time!
Sounds like a connecting rod banging against the crankcase?
I wouldn’t run it again until torn down and inspected.
Cheers
Chris G
KR2S
Sent from my iPhone

> On Feb 25, 2024, at 13:56, Larry Flesner via KRnet  
> wrote:
> 
> 
> 
> 
> 
>> So, while I was adjusting the valves a few days after I returned from the 
>> Gathering, I noticed a weird and ominous noise coming from the engine, like 
>> something large and steel was broken or loose.  Has anybody else every heard 
>> one that sounds like this when simply rotating the engine?  I'm just looking 
>> for a data point.  I don't recall the engine ever making this noise 
>> previously, and can only believe that if I'd heard it before, I'd have 
>> definitely noticed.  Listen to the short movie at
>> 
>> http://www.n56ml.com/n891jf/vw/wierd_volkswagen_noise.mov (you may have 
>> to cut and post this into your browser)
>> 
>> Mark Langford
> +++
> 
> As the saying goes, "holy crap, you flew that thing in here"!  An engine 
> not ready to disintegrate should not be making a noise like that.  I thought 
> we might just get to hear an impulse coupler but that is not an option.
> 
> Sounds like an engine tear down to me.  I'd hate to even run that thing again 
> without a flak vest.
> 
> Larry Flesner
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Re: KRnet> Takeoff fuel consumption for a VW 2180cc engine

[Chris Gardiner]

I have the Great Plains 2180 with a Prince P tip prop (52x48) and it burns 4.0 
US gallons per hour.
So Larry’s calculation is correct.
My header tank holds 10 US gallons so I usually flight plan for 2 hours with 30 
minute reserve .
Chris Gardiner
CGkRZ  KR2S

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> On Jan 14, 2024, at 15:32, Larry Flesner via KRnet  
> wrote:
> 
> 
>> On 1/14/2024 1:56 PM, Adam Deem via KRnet wrote:
>> I don't know about a fuel flow chart, but the math to calculate it is pretty 
>> simple.  The 2180 is 75 hp takeoff power at 3600RPM.  2180cc=.077cu ft.  
>> 3600RPM=1800 intakes/min for 138.6 cu ft/min or 8316 cu ft/hr.  8316x.08 
>> lbs/cu ft air=665.28 lbs air/hr. Correction for normally aspirated 
>> volumetric efficiency 665.28x.95=632 lb/hr.  632lbs air+60 lbs gasoline/hr = 
>> 100% power at 10.5:1 F/A ratio.  60lbs/6 lbs/gal = 10.0gph. Best power ratio 
>> would be 12:1.  You want your fuel system to deliver enough fuel in any 
>> scenario on takeoff (SL@10.5:1 standard day) with 150% safety margin to 
>> avoid starving the engine under worst case scenario (winter day with very 
>> low DA)
>> 
>> For that motor you'd want to run a fuel flow system test and verify it can 
>> deliver at least 15gph.  For comparison, my electric pump fed system (Facet 
>> 3psi cube pumps) delivers a verified 19gph through the system.  I hope this 
>> is helpful.
>> 
>> Adam Deem
> 
> ++
> 
> A bit less cumbersome math / rule of thumb  that is quite accurate for the 
> type of engines we use is 1/2 pound of fuel per horsepower per hour.  The 
> 0-200 at 100 hp / 2 = 50 pounds of fuel / 6 ppg = 8.33 gph at full throttle 
> at takeoff if its actually producing 100 hp.  A VW producing 75 hp on takeoff 
> would be 75/2=37.5 / 6ppg = 6.25 gph.   Multiply that number by 1.5 for 
> minimum acceptable fuel flow.  This holds true for any % of power hp fuel 
> flow.
> 
> The 0-200 for example at 65% power at cruise is 65hp / 2 =32.5 pounds of fuel 
> / 6 =5.42 gph at an acceptable fuel / air mixture (moderate lean mixture of 
> 14:1)
> 
> A 75 hp VW at 65% power cruise = 48.75 hp / 2 = 24.37 pounds of fuel / 6 = 4 
> gph fuel burn.  I've never flown a VW engine but I'm guessing that is pretty 
> close.
> 
> Larry Flesner
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Re: KRnet> KR-2 plans - FreeBird plans

[CHRIS GARDNER]

Thanks Mark,
I expect to get more done on the Freebird fuselage construction manual over the 
upcoming winter months. Stay tuned.RegardsChris GardinerKR2S C-GKRZ


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On Friday, November 3, 2023, 16:34, Mark Langford  wrote:

 
Bob Hartmaier wrote:
 
 
Are original KR-2 plans still available?  If so, at what price?
 

 
Jeannette Rand stopped selling KR plans several years ago, RR closed their 
doors, and appearances are that she is retired.  For a while,  nvAero was 
apparently allowed to sell them on her behalf, is my understanding.   A few 
years ago Jeannette announced that plans were no longer available, and that 
no-one had permission to reproduce or sell them.  So there is no longer any 
source for KR2S or other plans, other than some bootleg copies that I hear may 
be available on ebay or elsewhere, or unused (or used) copies of plans that 
folks have laying around in their garages, etc. 
 
 
FreeBird is an effort to remedy this problem, by posting free-to-download PDF 
plans for those who'd like to build what will become the next generation of 
KR-like homebuilt planes.  See http://www.freebirdplans.org/ for more on that.
 
 There's a lot more going on with the FreeBird design behind the scenes now, 
thanks to two dedicated CAD guys who are making real progress in solid modeling 
and visualization images, as well as plans themselves.  These plans will 
incorporate many of the changes that KR builders have been making, such as 
wider fuselages, and extra fuselage bay, the new airfoils, flaps, larger 
canopy, and that sort of thing, as well as details that were left to the 
imagination of the builder previously.  It's been way too long since I updated 
the site, and I'll try to do that in the next week or two.
 
Also, we've had a very good "Fuselage Construction Chapter" written, (thanks to 
Chris Gardiner) and am looking for other volunteers to write other chapters on 
the construction phase, etc. The idea is not a simple "knock-off" of the plans 
version, but a serious effort at filling in the blanks such as materials, 
sources, best practices, etc.  Let me know if you'd like to tackle on of these 
chapters. 

  

Thanks,
 Mark Langford
m...@n56ml.com
http://www.n56ml.com
Huntsville, AL 
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KRnet> Questions about local KR for sale

[Chris Duncan]

Hi everyone,I just joined the list and I am wanting your opinions on a KR2 for 
sale local to me. The KR2 in question  was built by Ralph Sawyer of Mojave, CA 
in the early 80s and given a AW cert in 1992. According to a brief write up in 
a 1992 KR news letter it is a stock retractable KR2 with the following changes; 
the outer wing panels were lengthened by 12" on each tip, the rudder area was 
increased by 20%, the canopy height was raised a few inches, and the wing and 
center section have solid foam cores and center section incidence was set at 
3deg. Empty weight is a porky 668lbs and power is a revmaster 2100, she was 
last flown in 2002. (I have attached a picture)
Is anyone on the list familiar with this particular aircraft? Is the added 
wingspan without increasing horizontal tail area going to adversly effect 
stability or the flight loads on the attach fittings? How about the 668lb empty 
weight, that seems like alot for a KR?
I am a ppl and a/p, ive owned at least a dozen experimentals and ultralights 
including a sonerai IIL and am currently flying a vw powered minimax and a 
pietenpol aircamper. I have admired the KR2s for a long time and am delighted 
to have a chance to buy one local to me that just needs some TLC to get going 
again, however I would appreciate some input from those more experienced as to 
whether the plane described above is likely to be a sweet flying bird or a 
turkey?




ThanksChris duncanrcpilo...@sbcglobal.net


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Re: KRnet> Help with Fuel shut-off placement.

[Chris Gardiner]

Dee, My shut off valve is also directly below the header tank and that’s why I put the control on the instrument panel as per last picture.If you like I can take a photo of it under the panel /tank to help to understand it betterRegardsChris GardinerSent from my iPhoneOn Jul 25, 2023, at 18:46, dee david via KRnet  wrote:Larry,I totally agree with you. But on the other hand I was not trying to recreate the wheel.Hoping if I saw someone with a configuration close to mine I'd copy.My delimer is that my shutoff valve is right below the header tank. and is 6" recessed towards the fire wall.As a result I can not see it.I'm getting a lot of flack for it.One solution is to put a universal joint and extend the turn off knob out to the instrument panel.deeOn Tue, Jul 25, 2023 at 10:00 AM Flesner via KRnet  wrote:On 7/25/2023 6:06 AM, dee david via KRnet wrote:
>
> I'd like for several of you folks with flying KR2 to post a picture of 
> where
> your shut-off valve are placed - so I can see your implementation.
> I presume most of you placed it on the console - maybe?...
> Dee
>

While it may be helpful to see how other have plumbed their fuel system 
every KR is different and may not be a good match for your system.  
Variables like location and number of tanks, size of tanks, routeing of 
lines, size of lines, number of pumps, location of pumps etc., will all 
have an effect on getting fuel to the engine.

It's best to consider your setup and design a system and place 
components to give the most reliable deliverable fuel to the engine.  
Consider things like having the least number of fittings, restrictions, 
length of lines, location of shutoff / selector valve, line size, line 
security  and resistance to damage. Consider head pressure, or lack of, 
number of pumps, location, etc.  When I built 211LF I determined the 
electric pumps had internal check valves so I eliminated in line check 
valves.  The location of the selector valve is what put John Denver in 
to the ocean.  Remember, the system forward of the firewall is just as 
important as aft of the firewall, gascollator, heat on lines, routeing, 
etc..

Rather than try to duplicate someone else's system, consider all the 
factors and design a reliable, easy to use system for your one-of-a-kind KR.

Good luck.

Larry Flesner

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Re: KRnet> Any other KRs flying to OSH this year?

[Chris Pryce via KRnet]

I'll be there. What row do we park in again? I like to put the number on
the sign.

Chris Pryce

On Tue, Jul 18, 2023, 17:52 ROB SCHMITT via KRnet 
wrote:

> I am at OshKosh, but drove up this year with wife and grandkids. My KR is
> still flying great, just decided to bring the grandkids this year. I’ll see
> everyone at the forum.
>
> Rob Schmitt
>
>
> Sent from my iPhone
>
> On Jul 18, 2023, at 7:27 PM, Mark Langford  wrote:
>
> 
>
> Is anybody else planning on flying a KR to OSH this year?  I do, to give
> the forum, and will try to snag our usual place out front of Homebuilder
> HQ, although Rob Schmitt may have already done that for us.  At this point
> it looks like the weather will be cooperative, and a decent week in
> general.
>
> The KR "Builders and Pilots" Forum will be at Forum Stage 3 at 11:30 on
> Monday July 24th.  After the forum we'll wander to the flightline for KR
> show and tell and to answer questions that might arise.
>
> --
> Mark LangfordML@N56ML.comhttp://www.n56ml.com
> Huntsville, AL
>
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Re: KRnet> VW AA Cylinder Head Dual Spark Plug Question

[Chris Gardiner]

Hi Sam
My dual plug VW 2180 from Great Plains has 14mm on top and 10mm on the lower 
plugs.
Your guy is correct that there is barely enough material to add the lower plugs.
This is my 3rd set of heads from GPAS and no problems with this set up 
Chris Gardiner
C GKRS
2180 VW 300 hours

Sent from my iPhone

> On Jun 29, 2023, at 08:20, robert7721--- via KRnet  
> wrote:
> 
> Sam,
> 
> I am not sure what an "AA" head is, but I am sure they are all similar. I 
> purchased mine replacement heads at Great Plains and had the cylinder head 
> machine work done by them as well.
> 
> https://www.greatplainsas.com/0154a-/-043-cylinder-head.aspx
> 
> Then can do the dual spark plugs machine work. They can do 10mm, 12mm, or 
> 14mm no problem.  You can actually mix the types; my recent set has 12mm on 
> top and 10mm on the bottom.
> 
> 10mm is fine for our VW engines. 
> 
> Thanks,
> 
> Rob Schmitt
> N1852Z (over 1000 hours)
> Lees Summit MO
> 
> 
> 
> 
> 
> -Original Message-
> From: KRnet  On Behalf Of Samuel Spanovich via 
> KRnet
> Sent: Wednesday, June 28, 2023 9:28 PM
> To: krnet@list.krnet.org
> Cc: Samuel Spanovich 
> Subject: KRnet> VW AA Cylinder Head Dual Spark Plug Question
> 
> Question for all the VW guru’s out there regarding dual spark plug setup, 
> specifically with AA Volkswagen cylinder heads. 
> 
> After one year of use with single ignition (the same ones that made it across 
> the country with me for the gathering last year), I recently took my AA heads 
> in to get them machined for a second spark plug, in hopes of converting back 
> to dual ignition. I told the machinist originally to keep the same size plug 
> as the original spark plug (12mm x 3/4” reach).
> 
> However just before the machinist was supposed to perform the work, he 
> informed me that these particular heads (the AA ones) do not have enough 
> metal up near the combustion chamber and they are not thick enough to support 
> a 3/4” reach spark plug (he said he measured the width with calipers, and 
> compared it to an older MOFOCO cylinder head of mine, and the AA head was 
> supposedly not as thick. 
> 
> I asked if it would be possible to machine the second spark plug port for 
> something smaller, such as a 10mm x 1/2” reach plug.  He sounded like it 
> would physically fit, however he sounded a little hesitant about running that 
> small of a plug into a fairly powerful engine (~80 HP).  
> 
> My question is whether or not it would be safe to have this type of setup (1x 
> spark plug 12mm x 3/4”, and a secondary plug 10mm x 1/2”).  I was fairly 
> certain older VW heads accepted 14mm x 1/2”, so I was a little surprised when 
> the machinist said he wouldn’t think a 1/2” plug would suffice. 
> 
> Any input would be greatly appreciated; just trying to make sure I’m not 
> missing something completely obvious here. 
> 
> V/R
> 
> Sam Spanovich 
> 
> Sent from my iPhone
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Re: KRnet> new owner

[Chris Hird via KRnet]

Larry,
Honorary Member, your choice.
Honoured Member, voted by me.
Regards
Chris


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Re: KRnet> FreeBird - was WANTED: KR-1 plans

[Chris Gardiner]

Hi Mark,I would like to volunteer my services to write some of the construction manual as you see fit.Being retired , I have time to spare in the winter months when I’m not flying my KR2S.RegardsChris GardinerC GKRZ 300 hours VW2180 GpASSent from my iPhoneOn Mar 10, 2023, at 07:59, Mark Langford  wrote:
  

  
  
Kenneth Morrison wrote:
" what is the free bird project?"
See http://www.freebirdplans.org/  for
details.  Progress has been slow, but we're getting there.
I also have to mention that anyone who
thinks they'd like to build a KR-1 probably needs to find one
and sit in it to make sure they fit.  Being a Munchkin is a
must, if you build it by the plans, and that's coming from a
pretty small guy (me).  A stock KR-2 is equally tight, and short
of headroom.  The KR2S is a huge step in the right direction,
but almost all of them being build in recent years have been
stretched upward and lengthwise, and the FreeBird  project is
just an extension of that effort.  
  
No FreeBird plans are available yet, but
when they are, they will be published to the website above, for
free download.  A re-write of the plans build manual is also on
the agenda, as the original plans left a LOT to the
imagination.  This documentation will be a "living document"
that will change as the design and experience evolves, rather
than frozen in stone like the old plans have become.  Please be
patient.  This will not happen overnight.  I've asked a few
experienced builders if they would contribute their time to the
effort, but have received very little in the way of offers, so
if there are others who feel they can offer real contribution
(in the way of time and writing) to the effort, please let me
know. This is mostly in the form of writing a chapter in the
build manual, or at least one aspect of the build process.  
Depending on how much feedback I get, I may not get back to you
immediately, but will at least have a small pool of contributors
lined up, who are willing to do some  writing. 
  
Mark Langford
m...@n56ml.com
http://www.n56ml.com
Huntsville, AL

  

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Re: KRnet> Diehl wing skin installation video

[Chris Prata via KRnet]

awesome

Slava Ukraini!

From: KRnet  on behalf of MS 
Sent: Tuesday, March 7, 2023 3:51 PM
To: krnet@list.krnet.org 
Subject: KRnet> Diehl wing skin installation video

I have the VHS tape of this thanks to one of the Netters who sent it to me 
quite a while back.  Just recently, a friend of Jeff's and mine came across it 
on YouTube and sent me the link so I thought to myself "What a good place for 
it!"

I just today figured out how to upload and post a video on YT.  For anyone 
interested in the intricacies of building, Dan Diehl goes into a lot of detail 
on various things related to the construction of KR's.  I imagine it might be 
of great interest to anyone currently building or planning to.

KR2 KR1½ 
KR1


[https://s.yimg.com/nq/storm/assets/enhancrV2/23/logos/youtube.png]
KR2 KR1½ KR1

Mike
KSEE


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Re: KRnet> CoA approved today

[Chris Hird via KRnet]

Congratulations Phillip,

You still inspire the Austrlian contingent of KR Builders and wanabes 
(Thats me).


Chris
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Re: KRnet> Diehl Wing Skins and Tail feathers For Sale

[Chris Prata via KRnet]

for a member here $1200 picked up in RI would do it...  thats about 1/3 of new 
cost if they can even be found!



Slava Ukraini!

From: KRnet  on behalf of Flesner via KRnet 

Sent: Thursday, January 12, 2023 5:46 PM
To: krnet@list.krnet.org 
Cc: Flesner 
Subject: Re: KRnet> Diehl Wing Skins and Tail feathers For Sale

On 1/12/2023 2:28 PM, Chris Prata via KRnet wrote:
Located in Rhode Island

I'll post these every so often because for a builder they are a Godsend!


++

Chris,


Including an asking price might help the sale.


Larry Flesner
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Re: KRnet> High Altitude Upset

[Chris Prata via KRnet]

The P-38 was fast, but was much slower than the Me-262 and the Me-163 Komet 
rocket plane...  those Germans sure were good at technical stuff!  Werner Von 
Braun was a lead in getting us to the moon...   I wonder about the 262 and 163 
as far as these issues.

As to the KR at ~200mph, more a concern is flutter which results from not 
balancing control surfaces properly. Or, as happened to my friend, painting the 
plane and then not re-balancing them.

Slava Ukraini!

From: KRnet  on behalf of MS 
Sent: Wednesday, January 11, 2023 9:03 PM
To: krnet@list.krnet.org 
Subject: KRnet> High Altitude Upset

"Stick and rudder talks about high altitude upset. Can this happen to a heavy 
KR2S?"

**

High Altitude Upset normally refers to what can happen when the razor thin 
margin between barely-unstalled wings and the critical Mach for a particular 
design get too close to each other. Particularly susceptible are planes with 
swept wings.  Also referred to as "coffin corner" and also referred to as "mach 
tuck".  I can't imagine anyone using these terms in relation to a KR :-).  
(Maybe Richard Shirley's?[Emoji])  Also can't imagine the phenomenon being 
written about in Stick & Rudder (1944) when jet aerodynamics were only 
beginning to be understood (except surely by the Germans).  But who knows?  
Langewiesche's work was the aviator's bible . . . and still is when it comes to 
clear explanations of the elementals of flight.

This phenomenon wasn't entirely unknown (thanks to Wikipedia) even in 1944, 
having first been encountered with the P-38, the fastest fighter to come out of 
the war.

Mike
KSEE

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Re: KRnet> Merry Christmas to all

[Chris Prata via KRnet]

thanks larry you too!

Slava Ukraini!

From: KRnet  on behalf of Flesner via KRnet 

Sent: Friday, December 23, 2022 10:08 AM
To: krnet@list.krnet.org 
Cc: Flesner 
Subject: KRnet> Merry Christmas to all



Merry Christmas to all that celebrate.  I hope Santa brings all that you need 
to complete your project.  Fly Safely in 2023.

Larry Flesner


THE DAY BEFORE CHRISTMAS



‘Twas the day before Christmas and out on the ramp

Sat a little KR, a mischievous scamp

He should be in his hangar or so he was told

But he just had to see what the day would behold



He’d heard of this fellow all dressed up in red

He was told there were reindeer that powered his sled

He couldn’t believe that a sleigh could take wing

He’d been born in a shop where logic was king



With patience he sat there till day turned to night

And that’s when he saw it, a twinkle of light

It seemed headed his way and it gave him a chill

When he heard what seemed thunder just over the hill



The rumble got louder, he was frozen in stare

There were thirty six hooves all pounding the air

There was anti-collision that flashed on the nose

And the elf shook with laughter from his head to his toes



He was headed down final, you could tell by his grin

That he didn’t fly patterns and he landed downwind

He knew KR waited so he stopped for a chat

They talked as he dusted the snow from his hat



Too soon they were leaving they were off in a leap

They were picking up speed and climbing out steep

They flew straight as an arrow and it’s only a guess

That Rudolph was using his new GPS



And then it was over they were all out of site

And he couldn’t believe what was told him that night

He rolled back to the hangar but the invite was clear

“If you install an aux tank you can join me next year”



YEE HA

 Larry Flesner  12/24/2005
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Re: KRnet> corvair engine help needed

[Chris Pryce via KRnet]

Did you run a differential compression check? That will tell you if you
have a valve train issue right away.

On Sun, Dec 11, 2022, 18:43 MS  wrote:

> Tested springs and they tested "OK"?  What kind of reasoning is that?
>
> Re-used valve springs?  Sheesh.
>
> Mike
> KSEE
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Re: KRnet> Auto pilot servos

[Chris Pryce via KRnet]

Here's a video on how I did my roll servo. My elevator and roll servos
match Joe Horton's as best I could figure out from the photos that Mark
linked.

Chris Pryce

https://youtu.be/8srURoUyCaE

On Sat, Nov 5, 2022, 14:18 Mark Langford  wrote:

> Stef wrote:
>
> Question for the pilots who have  a auto pilo system in there KR to
> possible sent me some pics how you installed the servos. I have some
> ideas but maybe you have better.
>
> See the last photos at the bottom of http://krnet.org/krs/jhorton/ to
> see how Joe Horton arranged his Dynon servos on N357CJ.
>
> Mark Langford
> m...@n56ml.com
> http://www.n56ml.com
> Huntsville, AL
>
>
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Re: KRnet> Load testing of the KR2S and variants

[Chris Pryce via KRnet]

It was an incredible trip. My Dad and I logged over 30 hours to and from.
We had a great showing at the forum and had a great time answering
questions at the airplane to aspiring builders. To those still building:
Keep sanding until it flies!!!

Chris Pryce
Vacaville, CA


On Fri, Jul 29, 2022, 17:24 Flesner via KRnet  wrote:

> On 7/29/2022 7:12 PM, donald january via KRnet wrote:
> > For those who may have missed it Chris Pryce's beautiful Corvair
> > powered KR2S is seen taxing out to departure on a Thursday video from
> > 2022 Airventure.
>
>
> ++
>
> It appears Kris made it home, safely we hope.
>
> https://flightaware.com/live/flight/N722KC
>
> Kris, when you catch your breath we'd love to hear all about your
> adventure.
>
> Larry Flesner
>
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Re: KRnet> Adventure live

[Chris Pryce via KRnet]

Thanks for the link. I was able to check it and see mine and Rob's plane
still where we left them.

On Sat, Jul 23, 2022, 17:59 Flesner via KRnet  wrote:

> On 7/23/2022 1:17 PM, Flesner via KRnet wrote:
> > On 7/22/2022 8:15 PM, John Price via KRnet wrote:
> >> Just a mental exercise here.  Wouldn’t you need to take a static
> >> reading on both the upper and lower surface?   Wish I could do that.
> >>
> >> John Price
> >
> >
> 
>
> >
> >
> > Would a pitot read with no ram air measure pressure (basically a
> > static read) at the wing and use static inside the cockpit work? We're
> > not looking for an exact number here just the difference between the
> > two. Someone with a better understanding than me and two altimeters
> > will have to answer that for us. That could go viral on Youtube. 😁
> >
> > Larry Flesner
> >
> > P.S. How about a single altimeter with two tubes and a selector valve
> > between the two.  Read one then the other.
> >
>
>
>
> Airventure live cameras much better this year.
> https://www.eaa.org/airventure/live
>
> Thunderstorm crossing the airfield at the moment, 6:00 PM Central time.
>
> Larry Flesner
>
>
>
>
>
>
>
>
>
>
>
>
>
>
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Re: KRnet> WB got some real numbers

[Chris Pryce via KRnet]

Your CG range doesn't sound right. If memory serves me it should be 8-14"
aft of the leading edge.


On Mon, Jul 11, 2022, 08:46 Craig Williams  wrote:

> So I went and re-measured my ARMs this am, emptied the tanks and put her
> on scales.  Datum is 48" ahead of the firewall.  So all measurements were
> taken from the firewall and 48" was added.
>
> FWD Baggage= 56
> LE=65"
> Main Gear= 68
> FWD CG= 71.4
> AFT CG = 77.8
> Fuel= 88
> Pilot= 93
> AFT Baggage= 121
> Tailwheel=204
>
> With my butt in the seat and full fuel here is where I am at...Not Good
>
> LM - 416 - 68 - 28288
> RM - 409 - 68 - 27812
> Fl - 144 - 88 - 12672
> Pt - 260 - 93 - 24180
> TW - 27 - 204 - 5508
>
> Tot 1243   -   97576
> CG = 78.5
>
> Somethings gotta move so I am thinking about moving the seatback FWD by 3
> inches.  Also I would normally move the engine FWD 1" but the easier thing
> to do is add a weight up by the 5th bearing.
>
> Any other ideas?
>
> Craig
> N886MJ (N51CW)
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Re: KRnet> location arm for wing tanks

[Chris Pryce via KRnet]

I calculated the datum using the book method of weighing all three wheels,
adding fuel and weighing again. My wing tanks are at 21.6 aft of the
leading edge.

On Sun, Jul 10, 2022, 20:31 Craig Williams  wrote:

> Because the datum in my plane no longer exists (tip of spinner) I needed
> to pick a new Datum.  My question is what ya'll are using for wing tank
> arms as measured from the leading edge?  It looks to be about 16".
>
> Thanks
> Craig
> N886MJ (N51CW)
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Re: KRnet> (no subject)

[CHRIS GARDNER]

Currently running a Prince P tip propellor 52x48 on my Great Planes 2180 VW.I 
believe he’s still in business.(Lonny Prince)RegardsChris GardinerC GKRZ KR2S


Sent from Rogers Yahoo Mail for iPhone


On Saturday, July 9, 2022, 00:34, Lulubelle Pitts via KRnet 
 wrote:

It is.   Has anybody used a aerovee propeller on a KR-2?    Like one of those 
carbon fiber ones.
On Thu, Jul 7, 2022, 9:55 AM Parley Byington via KRnet  
wrote:

My 52 x 48 is an Amyer- Demuth prop for N54PB which is turned by a 1835 VW 
turbo charged.
I bought it back in 2000 for around $750.00.
Hope this info is of some use, good luck.
SignedParley ByingtonN54PB A Vietnam era veteran Henderson Nevada.

Sent from my iPhone

On Jul 7, 2022, at 9:22 AM, Lulubelle Pitts via KRnet  
wrote:



Thank you 
On Thu, Jul 7, 2022, 9:12 AM Kevin Stolhammer via KRnet  
wrote:

Hoverhawk, Arrowprop and Culver.  Also sensenich.  None too responsive tho.  
Good luck.Kevin 
On Thu, Jul 7, 2022, 8:21 AM Lulubelle Pitts via KRnet  
wrote:

I have a great American propeller.
  Great American propeller seems to be out of business.
 Is there someone who makes wood props?
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Re: KRnet> Oshkosh Homebuilt Review invitation

[Chris Pryce via KRnet]

I will be available again if needed.

On Fri, Jul 8, 2022, 16:49 Flesner via KRnet  wrote:

> On 7/8/2022 5:34 PM, robert7721--- via KRnet wrote:
>
> He would like to have two KRs with their pilots to present their aircraft
> for this review. We are being set up to do this on Tuesday at 11:00 am –
> but exact date/time is subject to change.
>
>
> ++
>
> I'm thinking the efforts of Mark Langford have earned him a seat at the
> table if his work allows and if he can be convinced to stay an extra day.
> Oh wait !!! I think he is retired now
>
> Larry Flesner
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Re: KRnet> KR parts from Lawn & garden?!

[Chris Pryce via KRnet]

I hate to be that guy but I have to ask the question after seeing multiple
negative posts: Do you have a flying KR or even a flying airplane at all?
All I've seen the past couple of days is negative commentary.

I've flown 200 hours in a little over two years with Lowes lawn and garden
parts, no magnetos and no issues. We are here to experiment with our
experimentals. There is always risk. If you don't accept any risk you will
never fly. We all make the decision of what is our personal level of risk
and operate accordingly. Can I crash and die? Yes. Could I die driving on
my way to work? Yes. Personally, I'd rather go in a blaze of glory doing
something I love.

Keep on building, love the process, and enjoy the fruits of your labor.

Chris Pryce
Vacaville, CA


On Thu, Jul 7, 2022, 21:12 Dr. Feng Hsu via KRnet 
wrote:

> hey Victor & Luis,
>
> That's what would happen to us if redundant systems are made of the same
> component with identical design! In highly sophisticated engineering
> system, one should never say "that's impossible or unlikely to happen". I
> understand all the pros for the Electronic ignition system that Luis
> listed, however I would not feel confident if the two redundant Electronic
> ignition modules are identical component. Yes, two independent power supply
> with separate batteries do contribute on risk reduction, but that might be
> not good enough to offset the "CCF" (common cause or common mode failures)
> contribution to risk of losing the system during flight
>
> Do you have some test or reliability data on the SDS CP1 module from the
> vendor? I will feel better if the failure rate is in the range below 1E-4?!
>
> Best of luck!
>
> Dr. Hsu
>
>
> On Thu, Jul 7, 2022, 8:08 PM victor taylor via KRnet 
> wrote:
>
>> Hey Luis,
>>
>> At Velocity we still keep one magneto on all our aircraft. I had dinner
>> with a Velocity owner who had dual batteries, dual alternators and dual
>> electronic ignition. I suggested that he have one magneto and he said
>> absolutely not and went on to say that there was no way both systems could
>> fail at once. Four months later he and his wife were coming out of
>> Kissimmee Florida and both systems failed within a minute of each other. It
>> totaled the aircraft and put them both in the hospital for over three
>> months each. He is now building another Velocity that will have one mag and
>> one electronic ignition.
>> Your system is unlikely to fail but it’s not impossible. Magnetos are
>> definitely old technology and way less efficient. But time has proven that
>> dual mags are highly reliable.
>> At the end of the day we are flying home made wooden aircraft with
>> automotive based engines on many of them. It’s relatively safe but not
>> quiet as safe as a certified aircraft with that 60 year old technology. How
>> much “experimental” we want to fly our families in is what it all boils
>> down to.
>>
>> Victor Taylor CFII
>>
>>
>> On Jul 7, 2022, at 19:09, Tony King via KRnet 
>> wrote:
>>
>> 
>> In addition to all the points Luis has made, pretty much every car on the
>> road today has electronic ignition, with far less redundancy than Luis has
>> outlined, yet ignition failures are quite rare given the number of units in
>> operation.  Whilst there may be more complexity, the reliability of
>> electronic systems is in a whole different ball park to mechanical
>> systems.  Of course the failure modes are different too, and regardless of
>> which system(s) one chooses it's essential to understand and address how
>> they might let you down.
>>
>> TK
>>
>> On Fri, 8 Jul 2022 at 09:21, Luis Claudio via KRnet 
>> wrote:
>>
>>> Dr. HSU, oh ye of little faith... I do suggest you look into the "SDS
>>> CP1 electronic ignition systems". It means that I have dual independent
>>> power sources for controlling each independent timing computer with
>>> automatic customization for RPM and load (manifold pressure). The computer
>>> monitors my manifold pressure and smooths out the engine timing to give you
>>> the best engine performance on your climb or cruise. You are always one set
>>> of points or capacitor failure before your engine goes to hades... (you
>>> know "Hell")...
>>>
>>> Consider this"
>>> 1. The engine timing with an electronic ignition system does not drift
>>> from the setpoint since there is no mechanical wear and tear
>>> 2. Each independent computer controls an independent bank of spark plugs
>>> (4 upper 

Re: KRnet> New subscriber - looking for KR2S plans

[Chris Gardiner]

Hi Aman,
I have a KR2S located east of Toronto based at Oshawa airport CYOO.
Give me a call if you would like to visit my plane and discuss KR2’s.
Regards
Chris Gardiner
905 441 1778


Sent from my iPad

> On Jul 7, 2022, at 2:23 PM, Aman-Deep S. Mahil via KRnet 
>  wrote:
> 
> 
> Hi All,
> 
> I've been reading through all of the wonderful resources and am ready to 
> start my KR2S build.  Now that the plans are no longer available, I'd like to 
> purchase an unused set from someone.  If you have a set or know of someone 
> who does, please let me know.  
> 
> Also, I'm located in the Toronto area so it would be great to meet any local 
> members to see their project or completed plane.
> 
> Thanks,
> 
> Aman
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Re: KRnet> New subscriber - looking for KR2S plans

[Chris Matheny via KRnet]

How long til the freebird plans are finalized and ready? I have a set of
KR2S plans but I'm really wanting to see the new plans that were in the
works.


On Thu, Jul 7, 2022, 2:23 PM Aman-Deep S. Mahil via KRnet <
krnet@list.krnet.org> wrote:

> Hi All,
>
> I've been reading through all of the wonderful resources and am ready to
> start my KR2S build.  Now that the plans are no longer available, I'd like
> to purchase an unused set from someone.  If you have a set or know of
> someone who does, please let me know.
>
> Also, I'm located in the Toronto area so it would be great to meet any
> local members to see their project or completed plane.
>
> Thanks,
>
> Aman
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Re: KRnet> batteries

[CHRIS GARDNER]

I’m also on my 3rd Odyssey PC 680 after 21 years (2 in the KR and one in a 
motorcycle)Love them. Good choice for meChris GardinerKR2S


Sent from Rogers Yahoo Mail for iPhone


On Sunday, July 3, 2022, 09:42, Mark Langford  



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Re: KRnet> KitPlanes Article now Online

[Chris Gardiner]

Great article guys! You have done the KR community proud!
Thanks for including my cockpit pix in the article.
Have fun at KOSH this year!
Cheers
Chris Gardiner
KR2S C -GKRZ

Sent from my iPhone

> On Jun 29, 2022, at 16:23, k...@bouyea.net wrote:
> 
> 
> If you don’t have a subscription to KitPlanes, you can now read the article 
> on their web site at https://www.kitplanes.com/the-kr-at-50 
> Chris and I had a good time contributing to the coverage. 50 years of KR 
> history is fun to be part of.
> Keep building. The flying part is even better.
>  
> John Bouyea / OR81/ Hillsboro, OR
> N133RM KR-2S – imported, fixed & flying
> www.bouyea.net/N133RM
>  
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Re: KRnet> Diesel?

[Chris Matheny via KRnet]

The big worry about using the car ecu is the fact that there are so many
lines of code written to protect the engine in case any of the sensors see
something they don't like. It can go into limp mode and cut your power down
for any reason it seems critical in a road application. The issue with that
is it could be on climb out, approach or anything in-between and you have
no say so in it. That's why I won't use a factory ecu on anything for
flight but that's my opinion and it's worth what you paid for it. The nice
thing about aftermarket stand alone ecu's is that they don't require all
the sensor inputs that a factory one wants to see. You can eliminate a lot
of failure points that way by only using the critical inputs for making it
run and produce power for flight.

On Thu, Jun 23, 2022, 1:04 PM svd via KRnet  wrote:

> I was hoping to adapt the street harness, plumbing, and ECU from the smart
> car.  I dont know what complications this raises.
>
> On Jun 23, 2022, at 9:33 AM, Chris Matheny  wrote:
>
> You will likely have another $5k in a ecu setup and programming to control
> the high voltage solenoid diesel injectors for those. Bosch makes stand
> alone ecu's in the $3600-$5000 range. Motec also makes one. The only
> "affordable" one I've found is the DID1 ecu for around $1200 but have no
> experience with it. Those engines are around 250# also from my research
> without coolant and radiator. Good luck, I followed the auction when those
> sold but didn't think I could use them. Not sure of your location but the
> Opel/GM 1.6 diesel is about the same weight and available in the US for $4k
> new from GM. Good luck in whatever you decide.
>
> On Thu, Jun 23, 2022, 12:09 PM svd via KRnet  wrote:
>
>> I'm very interested in making this engine work for my KR2s:
>>
>> https://inlandempire.craigslist.org/avo/d/riverside-brand-new-turbo-diesel-81-hp/7489893350.html
>>
>>
>> Scot is asking $5K each and has 34 of them.
>> They are almost bare engines (as pictured) and will need wiring and
>> plumbing - so not a small project. But its been done before:
>> http://flyeco.net
>>
>> Anyone want to do this together? (divide and conquer)?
>>
>> Cheers,
>> Owen
>>
>> --
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>> KRnet@list.krnet.org
>> https://list.krnet.org/mailman/listinfo/krnet
>>
>
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Re: KRnet> Diesel?

[Chris Matheny via KRnet]

You will likely have another $5k in a ecu setup and programming to control
the high voltage solenoid diesel injectors for those. Bosch makes stand
alone ecu's in the $3600-$5000 range. Motec also makes one. The only
"affordable" one I've found is the DID1 ecu for around $1200 but have no
experience with it. Those engines are around 250# also from my research
without coolant and radiator. Good luck, I followed the auction when those
sold but didn't think I could use them. Not sure of your location but the
Opel/GM 1.6 diesel is about the same weight and available in the US for $4k
new from GM. Good luck in whatever you decide.

On Thu, Jun 23, 2022, 12:09 PM svd via KRnet  wrote:

> I'm very interested in making this engine work for my KR2s:
>
> https://inlandempire.craigslist.org/avo/d/riverside-brand-new-turbo-diesel-81-hp/7489893350.html
>
>
> Scot is asking $5K each and has 34 of them.
> They are almost bare engines (as pictured) and will need wiring and
> plumbing - so not a small project. But its been done before:
> http://flyeco.net
>
> Anyone want to do this together? (divide and conquer)?
>
> Cheers,
> Owen
>
> --
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> KRnet@list.krnet.org
> https://list.krnet.org/mailman/listinfo/krnet
>
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Re: KRnet> EXTRA! EXTRA! READ ALL ABOUT IT !!!

[Chris Gardiner]

Can someone advise which issue (month) of Kitplanes has the KR2 article?
I just subscribed to the digital version and I don’t see it in July 2022?
Please advise
Thanks
Chris Gardiner

Sent from my iPhone

> On Jun 22, 2022, at 22:12, Flesner via KRnet  wrote:
> 
> 
>> 
>> Wow, 12 pages!  The article is really well done. Scott Spangler did a really 
>> good job of covering it all.   For those who don't get KitPlanes, you don't 
>> know what you're missing.  I get several magazines, and KitPlanes is the 
>> only one I sit down and read from cover to cover
>> 
>> Mark Langford 
> 
> 

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Re: KRnet> KR-2 ZS-UKU Accident final report

[CHRIS GARDNER]

 Hi,
Page 19 of the detailed report shows the right aileron on a mass scale reading 
.415 kg ( approx. 1 pound ) under balanced at the weight position ( 145 mm 
chord length).That's a lot ! Must have been under balanced from day 1.

(.415 kg X 145mm = 60 kg/mm)
The balancing weight is a T shaped tube ( probably filled with lead)  and was 
still attached to the aileron spar.
Sad but preventable mistake.
I'm sure all KR pilots will breath easier knowing that the wing spar did not 
fail without serious overload by flutter. I know I will .
And I check the balance weights for security at every walk around before flight.
Cheers
Chris GardinerKR2S   CGKRZ 285 hours
. 
On Monday, May 16, 2022, 09:45:32 a.m. EDT, Larry via KRnet 
 wrote:  
 
 
On 5/16/2022 8:07 AM, Mark Langford wrote:
>
> I think what they are saying that at the original inspection, the 
> balance weights are inspected and the aileron balance is verified, but 
> subsequent inspections ("annuals" I presume) don't go into that kind 
> of detail to verify that they are still capable of counterbalancing 
> the ailerons. 

+

They gave a specific number ( 60 kilograms per millimetre (kg/mm) 
residual moment.).  Was the wreckage in good enough condition to 
determine that and how exactly would they do that?  If they would state 
"the aileron was under balanced by 8 oz. for example I could comprehend 
that but their numbers mean nothing to me.

Larry Flesner

P.S. My aileron were not checked on original inspection.  I built them 
with a slight "over-balance" assuming that "balanced" is ideal, 
"over-balanced" second best, and "under-balanced" a no-no if required.

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Re: KRnet> Call from Jeanette

[Chris Pryce via KRnet]

Pdf page 50 is the only picture I found in volume 1

On Sun, May 1, 2022, 12:04 Mark Langford  wrote:

> Larry Flesner wrote:
>
>  > ..  She has been looking
>  > for some photos of Stu but not found any yet.  I hope she finds at least
>  > one as he deserves to be a part of this celebration.
>
> I'm pretty sure he is shown at least once in the early KR Newsletters,
> which are all scanned and text searchable at
> http://www.krnet.org/newsletter/kr_newsletter.pdf .
>
> I'd jump on it, but am in the midst of other work, so will leave that to
> others with a few more minutes of time on their hands.  I would search
> for "stu "   , with a deliberate space after the u, and see what that
> turns up .
>
> To narrow it to the first 60 newsletters, maybe start with
> http://www.krnet.org/newsletter/nl1.pdf  instead of the link above.
>
> Mark Langford
> m...@n56ml.com
> http://www.n56ml.com
> Huntsville, AL
>
>
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Re: KRnet> Instrument Panel for my KR2S

[Chris Pryce via KRnet]

I should clarify: I have a D100. I use that as my compass and do not have
an analog backup.

On Sat, Mar 26, 2022, 19:22 Luis Claudio  wrote:

> Here is what I found...Please see legend at the end for explanation of
> abbreviations
>
> Luis
>
> On Saturday, March 26, 2022, 05:09:28 PM CDT, Chris Pryce via KRnet <
> krnet@list.krnet.org> wrote:
>
>
> I don't have a magnetic compass and I didn't have any issues with getting
> my certificate.
>
> On Sat, Mar 26, 2022, 14:37 n357cj via KRnet  wrote:
>
> Hey Guys, I was watching some videos with my coffee this morning on
> instrument panels and one guy mentioned that if with a glass panel you have
> a magnetometer installed you don't need a wet compass... so did he mean
> that because they are accurate and not needed or is the wet compass
> replaced in the FAA's eyes for inspection purposes. I had a magnetometer
> with the D10a installed in 357CJ and it was completely accurate but at no
> time did I think that legally I could have removed the panel mounted
> compass.
> Joe Horton
>
>
> --
> *From: *n357cj 
> *To: *krnet 
> *Cc: *Luis 
> *Date: *Monday, 21 March 2022 7:51 AM EDT
> *Subject: *Re: KRnet> Instrument Panel for my KR2S
>
> Nice, I tried to order a skyview a couple weeks ago and talked to Dann at
> the factory and he told me they don't expect to have the materials for
> skyview until early 2023. So i am moving on to something else...
> Joe Horton
> 80% on DR. Dean plane (I need to get a number picked)
>
>
>
> --
> *From: *Luis 
> *To: *KRnet 
> *Cc: *Luis 
> *Date: *Sunday, 20 March 2022 11:27 AM EDT
> *Subject: *KRnet> Instrument Panel for my KR2S
>
> Just wanted to share a photo of my panel. I just finished it yesterday and
> will be installing back on the airplane today. After this, it's on to taxi
> test...I posted a video with the update on Rand Robinson's Facebook page.
>
> Luis
>
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Re: KRnet> Instrument Panel for my KR2S

[Chris Pryce via KRnet]

I don't have a magnetic compass and I didn't have any issues with getting
my certificate.

On Sat, Mar 26, 2022, 14:37 n357cj via KRnet  wrote:

> Hey Guys, I was watching some videos with my coffee this morning on
> instrument panels and one guy mentioned that if with a glass panel you have
> a magnetometer installed you don't need a wet compass... so did he mean
> that because they are accurate and not needed or is the wet compass
> replaced in the FAA's eyes for inspection purposes. I had a magnetometer
> with the D10a installed in 357CJ and it was completely accurate but at no
> time did I think that legally I could have removed the panel mounted
> compass.
> Joe Horton
>
>
> --
> *From: *n357cj 
> *To: *krnet 
> *Cc: *Luis 
> *Date: *Monday, 21 March 2022 7:51 AM EDT
> *Subject: *Re: KRnet> Instrument Panel for my KR2S
>
> Nice, I tried to order a skyview a couple weeks ago and talked to Dann at
> the factory and he told me they don't expect to have the materials for
> skyview until early 2023. So i am moving on to something else...
> Joe Horton
> 80% on DR. Dean plane (I need to get a number picked)
>
>
>
> --
> *From: *Luis 
> *To: *KRnet 
> *Cc: *Luis 
> *Date: *Sunday, 20 March 2022 11:27 AM EDT
> *Subject: *KRnet> Instrument Panel for my KR2S
>
> Just wanted to share a photo of my panel. I just finished it yesterday and
> will be installing back on the airplane today. After this, it's on to taxi
> test...I posted a video with the update on Rand Robinson's Facebook page.
>
> Luis
>
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KR>Re: W&B page in blue Book needed.

[Chris Gardiner]

Hi Steve
Is it the weight and balance page from the plans your are looking for?
I will send these 2 pages to you directly and a copy of my Excel spreadsheet 
for calculating the actual W&B of your specific plane
Chris Gardiner
C GKRZ

Sent from my iPhone

> On Feb 13, 2022, at 11:31, Stef den Boer via KRnet  
> wrote:
> 
> Hi KR friends,
> 
> My dutch FAA inspector ask me for the original W&B papers of the Blue-KR 
> book.  Sounds very stupid but I can't find it. Is it possible some of you can 
> make some pic of these pages.
> 
> In my load sheet I uses the 8 and 16 inches minos the aft 2 inch. The plane 
> flyes great with this numbers, but he want to see the pages from the 
> book...
> 
> Already have 75 hours on our KR2-S the PH-TDB. I am still very happy with my 
> baby. But sometimes it is easier to build a plane instead of the paper works!
> 
> Stef
> 
> 
> 
> 
> 
> Steph and his dad are building the KR-2S see 
> http://www.masttotaalconcept.nl/kr2 http://www.masttotaalconcept.nl/kr2
> 
> -Please see LIST RULES and KRnet info at http://www.krnet.org/info.html
> -Change list delivery options at 
> https://list.krnet.org/list/krnet.list.krnet.org/ Affinity List Info Board
> -Search recent KRnet Archives at  
> https://list.krnet.org/empathy/list/krnet.list.krnet.org/
> -Search John Bouyea's decades of archive at 
> https://www.mail-archive.com/krnet@list.krnet.org/ 

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KR>Re: 50th anniversary

[Chris Pryce]

Ill be there

On Fri, Feb 4, 2022, 14:23 Flesner  wrote:

>
> Below is the reply from Hal Bryan, editor of Sport Aviation.  In it he
> ask a question.  What is our (group) response? Anyone planning to be
> there with a KR?  Reading between the lines, my take is we'll get a
> story if we show up with enough KR's to make a story / event.
>
> Larry Flesner
>
>
> +
>
> Hi Larry –
>
> Thanks for reaching out. Do you know if we can expect to see a gathering
> of KRs at Oshkosh this year? It would be an interesting story to tell.
> Please keep me posted if you’re aware of any plans taking shape.
>
> Best regards,
>
> Hal
>
>
>
> **
>
>
>
> *Hal Bryan*
>
> *Managing Editor*
>
> EAA Lifetime 638979 | Vintage 714005 | Warbirds 553527
>
> P: 920-426-6866
>
> W:www.EAA.org 
> 
> -Please see LIST RULES and KRnet info at http://www.krnet.org/info.html
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> https://list.krnet.org/empathy/list/krnet.list.krnet.org/
> -Search 
> John Bouyea's decades of archive at
> https://www.mail-archive.com/krnet@list.krnet.org/

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KR>Re: KR 50th Anniversary

[Chris Pryce]

It was Roger Baalman's KR in 2019

On Tue, Jan 4, 2022, 21:42 Oscar Zuniga  wrote:

> Larry wrote-
>
> >What a contrast to KR's built today with at least one winning the Lindy
> award at Oshkosh.
>
> Would that have been the very sanitary white-with-orange-trim KR with Type
> 4 VW power?  Can't remember the builder/pilot's name.
>
> Oscar Zuniga
> Medford, OR
> 
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> -Search 
> John Bouyea's decades of archive at
> https://www.mail-archive.com/krnet@list.krnet.org/
>

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KR>Re: Corvair Engine fuel pumps

[Chris Pryce]

I followed William Wynne's firewall forward manual and have dual facet fuel
pumps on the firewall for redundancy. Fuel flows from my wing tanks, to the
fuel selector, through the firewall, the gascolator, and finally through
the two inline pumps before going to the carb.

On Mon, Nov 22, 2021, 22:01 G R Pickett  wrote:

> OK, so I haven't finished the Conversion Bible yet.  Right now I'm trying
> to figure out how to store it in the wings.  But eventually I'll have to
> pump it to the engine.  So, What's the fix for corvair fuel pumping?  Are
> you veering into a header tank?
> Griff P
>

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KR>Re: crash Concerns

[Chris Kinnaman]

In any event the consensus seems to be that this is the first anyone 
within the KR community has heard of a spar failure in the center 
section. So far that makes it an anomaly, with no indication of any sort 
of trend. It's been said that "a pilot can pull the wings off any 
airplane that's ever been built" - possibly not 100% true, but only 
partly humorous. Interested to find out what the final word is on the 
cause of the failure, including answers to questions such as those 
stated by Larry.


Chris K


On 11/7/2021 7:14 AM, Flesner wrote:

On 11/7/2021 6:59 AM, victor taylor via KRnet wrote:
In reference to Dr Feng's safety concerns here is a lot to consider. 
Keep in mind like Larry said that this is the first known wing 
failure of a KR in 30 years.


+++ 



For investigative purposes we're fortunate that the failed component 
landed separate from the crash site.  We should be able to separate 
component failure from crash damage. Questions I hope will be answered.


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KR>Re: Spar bolts/nuts

[Chris Kinnaman]

What exactly do you mean by "strip"? The plastic/fiber in AN364 & AN365 
nuts is supposed to just drag on the threads of the bolts enough to keep 
the nuts from spinning freely. The fiber is not intended to bear any load.


Chris K

On 11/6/2021 12:21 PM, Brett Lombardi wrote:

KR builders,
Attempting to torque the AN bolts that attach the brackets to the main and
rear spars. The nylon in the nuts strip with minimal pressure, ie. 12
lbs/sq ft.
Anyone else have this issue and/or advice?
Thanks,
Brett
__


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KR>Re: ZS-UKU - Apparently we have lost another...

[Chris Gardiner]

From previous correspondence with the owner of this KR2 , the wing tip tanks 
were not used to carry fuel.
They looked like Cessna 310 style tips but were not functional , merely 
decorative.
Sad day for our KR community.
Condolences to the family of the pilot
Chris G
C GKRZ. KR2S


Sent from my iPhone

> On Nov 5, 2021, at 10:39, BOB ROBERT  wrote:
> 
> From the photos it had wing tip tanks. That would put extra stress on the 
> spars 
> 
> Sent from my iPhone

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KR>Re: ZS-UKU - Apparently we have lost another...

[Chris Pryce]

https://youtu.be/EnEXUjb7lCE


On Thu, Nov 4, 2021, 15:46 Flesner  wrote:

> > -
> >
> > This popped up on one of my aviation news feeds.
> > Condolences to the pilots family.
> >
> > -Jeff Scott
> > 
>
> ++
>
> I was bouncing around on YouTube the other evening and stumbled on to a
> post by Dan Gryder titled "Probable Cause".  It had a short segment on
> Pete Klapp's accident with photos of Pete with his grand kids and
> several other personal photos that were a bit difficult to watch having
> known Pete for a dozen or more years at the Gathering.  It suggested
> Pete had a re-occurring problem with his canopy and lost control.  I
> can't find that site back and Dan Gryder indicated a number of his
> videos have been deleted by "someone".  If anyone wants to take the time
> to go through "Probable Cause" posts since the middle of September to
> try and locate the video, please post the link.
>
> Larry Flesner
> 
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KR>Re: Spar Skins

[Chris Kinnaman]

Anyone building airplanes with plywood owes it to themselves to go to
everyspec.com and download MIL-P-6070B, as well as the latest version
which supercedes it, MIL-DTL-6070C. Small knots and other defects are
permissible in aircraft plywood but under a certain size and only at a
given frequency within a given area as defined in the spec. You have to
inspect the wood in your possession and do the math. It's entirely
possible to get a pallet of 4'x8' sheets with no defects and then order
one sheet that has visible knots yet within spec ( one would hope).

Chris K


On 10/27/2021 2:42 PM, Flesner wrote:

On 10/27/2021 3:24 PM, Flesner wrote:
I don't ever recall seeing aircraft grade ply with circular grain and 
evidence of knot patterns.


++

Shouldn't it look more like this?



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KR>Re: Spar Skins

[Chris Kinnaman]

Pretty sure the KR-2 construction manual specifies vertical grain 
orientation for the spar shear webs.


Chris K


On 10/27/2021 7:48 AM, Sid Wood wrote:


To salvage your original spar with the miss-oriented web, plane it 
off.  One or two passes with a bench power planer would do it in a 
couple minutes.


Sid Wood
Tri-gear KR-2 ex-N6242
California, MD, USA
smw...@md.metrocast.net


Good Morning, So I think I messed up and have to redo the birch ply on 
the spars, I scarfed the ply 12:1,  but ran the grain horizontal 
instead of vertical one side of the main and outer fwd spars before I 
closed them up. acceptable? Plane it down? Box the other side of the 
spars in with vertical grain? I've read all the post on here from 
years past and still confused, horizontal grain. vertical grain? 
Sent from my  U.S.Cellular© Smartphone

__


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KR>Re: Has anyone tried to put a kr2 or kr2s on floats

[Chris Kinnaman]

Right, the KR-3. After years of development including a couple of 
crashes, it was announced in the Feb '84 newsletter no further work 
would be done on the design.



 On 10/22/2021 8:31 AM, Flesner wrote:

 > On 10/22/2021 8:56 AM, G R Pickett wrote: >> Oscar - your answer to 
KR Floats didn't quite match the photo!  Got a >> caption - or maybe a 
story-  to go with the photo of 33KR?  I'm >> pretty sure its not a Coot 
Amphibian, with a tail number like that...?! >> Griff P > > 
++


> > That was a Ken Rand design.  Can't recall the model number, KR3 > 
maybe.  I don't recall it ever getting past the prototype.


> > Larry Flesner > 

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KR>Re: Gap between wings.

[Chris Pryce]

My wing gaps are covered with 3M 471 tape. The holes where the WAFs are are
just filled with foam blocks. It's not pretty but it holds up at over 200
mph and is easy to remove for inspection.

Chris Pryce
Vacaville, CA

On Mon, Oct 18, 2021, 19:38 Craig Williams  wrote:

> I used aluminum roof flashing and painted it once in place.  I know others
> have used duct tape or aluminum speed tape.  Just depends on how nice you
> want it to look or easy to remove.
>
> Craig
> N886MJ (N51CW)
>
>
>

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KR>Re: Distance between fuel stops?

[Chris Pryce]

That depends on a lot of things. I can carry 30 gallons so my range is
pretty far. This summer I flew to Oshkosh with my dad and 20 gallons. We
did 3 hr legs at full throttle around 450 miles each with reserves.  That's
390 lbs for the two of us plus 20 lbs baggage.

On Thu, Oct 7, 2021, 18:56 Global Solutions  wrote:

> Can anyone shed some light on how far one can fly with a kr2S with 140
> lbs pilot and full tanks and a 110 hp Corvair engine?
>
> what has been done to increase the range of between stops other then a
> header tank?
>
> Thanks
>
> Stan
>
>
>
> --
> This email has been checked for viruses by AVG.
> https://www.avg.com
> 
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>

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KR>Re: Our own Chris Pryce

[Chris Pryce]

Yeah, just some fun in the KR. I had to make aggressive 90 degree bank
turns and pull 4-5 Gs to make it work. Definitely worth it. Total distance
was 347 miles flown with the words being about 50 miles long from N to T.

Chris Pryce
Vacaville, CA

On Tue, Sep 28, 2021, 14:05 Flesner  wrote:

> Chris,
>
> I assume you flew this with your KR2.  Those had to be some very tight
> 180 degree turns.  How did you pull this off.  Great job  What was
> the distance from N to the T?
>
> Larry Flesner
> <https://list.krnet.org/empathy/list/krnet.list.krnet.org/-Search>

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KR>Fly by video

[Chris Pryce]

Someone caught me having a little fun at an airshow recently.

https://youtu.be/aSNgHT0m9ck

Chris Pryce
Vacaville, CA

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KR>Re: KR flight characteristics

[Chris Pryce]

I have the ray allen servo for pitch trim and recently added a dynon servo
for altitude hold. It works great.

Chris Pryce
Vacaville, CA

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KR>Re: : Tail Spring

[Chris Pryce]

I made my tailwheel spring from a leaf spring I found in the dirt at a
salvage yard. They gave it to me for free when I told them what it was for.
I cut it to size with an angle grinder and bent it to shape with a torch
and sledge hammer.


Chris Pryce
Vacaville, CA


On Fri, Jul 30, 2021, 17:39 Mark Wegmet  wrote:

> As I recall, someone mentioned getting a leaf out of a Chevy Astro Van
> composite spring for the tail wheel. The transverse composite spring
> from a Corvette might work as well. As they say, your results may vary.
>
>
> On 7/30/2021 1:29 PM, Flesner wrote:
> >
> >  I’ve searched the archives and I’m not finding what I’m looking for
> > toreplace the broken aluminum “tailspring” on Roy’s airplane.I’ve also
> > read how many of you have fabricated something or other from achunk of
> > steel/ fiberglass/ carbon etc.John Bouyea
> >
> > 
> >
> > I cut a length of spring from a 1930's auto leaf spring, cold bent to
> > shape, dressed 1/8" off each side to fit the tail wheel assembly and
> > bolted it to the
> <https://list.krnet.org/empathy/list/krnet.list.krnet.org/-Search>

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KR>Re: Dynon AutoPilot Installation Completed

[Chris Pryce]

Very nice! I can't wait to add my roll servo. Heading out to pickup my Dad
in Oregon tomorrow and fly to Oshkosh first!

Chris Pryce
Vacaville, CA




On Thu, Jul 22, 2021, 21:52 John Bouyea  wrote:

> Following some very helpful tips and photos received from Chris, Jeff, Joe,
> Luis, & Roger I completed my Dynon autopilot installation and test flew it
> a
> few days ago.
> <https://list.krnet.org/empathy/list/krnet.list.krnet.org/-Search>

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KR>Re: N832VS

[Chris Kinnaman]

Congratulations Kevin!

Chris K


On 7/9/2021 2:11 PM, Kevin Stolhammer wrote:

Finally, after many setbacks, we "slipped the surly bonds of earth".  First
successful flight this morning.  Handles beautifully, hands off in level
flt in calm air.  Flew around for an hour.



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KR>KR Info Page

[Chris Matheny]

The Info page for KR's seems to be down or is it just on my end? That is
too good of information to lose. Hopefully someone had it backed up. Thanks


Virus-free.
www.avast.com

<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

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KR>Re: Tail wheel cables

[Chris Pryce]

I made mine with direct cable and no slack with a 4" solid wheel. Why? It
was simple and I didn't want to waste my time overthinking it. I get
postive, direct control on the ground like it's steering on rails. It can
be twitchy on takeoff and landing in a crosswind if you are lazy. Once I
got used to my airplane and how it reacts to wind, it is a non-event. I
made my first flight with only 6 hours of tailwheel time. After 100 hours,
I'm still here. Moral of the story, build whatever you decide and get it
flying. You will adapt to whatever system you choose.

Chris Pryce
Vacaville, CA

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KR>Re: Torque value of WAF AN6 bolts

[Chris Kinnaman]

Luis - the way the fittings are designed to load the bolts in shear only 
looks to me like the nut is there to keep the bolt from backing out and 
no clamping pressure is considered in the design of the joint. My glider 
has its wings retained by a couple of big shear pins with spring clips 
to keep them from moving out, and my V-Witt's flying and landing wires 
have clevis pins with cotter keys to keep them in place - NO threads 
whatsoever,so zero clamping force/torque value, yet all flying and 
landing loads go through them. So designing a joint like this with no 
specified torque value on the bolt is probably because the bolt is used 
as a pin only.


Chris K


On 5/24/2021 3:17 PM, Luis Claudio via KRnet wrote:

Just finished attaching my wings on permanently and need to torque the bolts 
and place my cotter keys. Researching the torque value of an AN6 bolt I found 
that 95 in pounds. I researched the newsletters and could not find a remedy so 
here goes my question...
Thanks
Luis R Claudio, KR2S N8981S Dallas, Texas



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KR>Re: seat belts

[Chris Kinnaman]

This is true, though it has never made sense to me. Because flying is so 
much more dangerous than racing? I used to race. Though there are some, 
the vast majority of the pilots I know have never crashed, never had an 
emergency landing. But every racer I know has crashed at least once. 
Just sayin'...


Chris K



On 5/20/2021 9:48 PM, Jeff Scott wrote:

If you mention airplane, it will be a very short conversation and they will not 
sell it to you.  That is especially true for the speed shops like JEGs.

-Jeff Scott
Arkansas Ozarks





This set caught my eye, both for price, the all black metal, and all
the five star reviews.
Larry Flesner



I forgot this.  https://www.jegs.com/i/JEGS/555/70082/10002/-1

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KR>Re: seat belts

[Chris Kinnaman]

Larry - maybe it's the same pitch the guys behind the counter at the 
cycle shop used about their helmets - "If you've got a $20 head,,,"



On 5/20/2021 4:33 PM, Flesner wrote:



I was using "airplane" in the search and kept coming up with $750 sets 
for Lear Jets.  Really? A set of belts in a Lear Jet is worth $600 
more than a set in my KR?  As Biden would say "come on, man !!"


Larry Flesner



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KR>Re: EAA contest

[Chris Kinnaman]

Great story, Larry. That pic of four KRs on the ramp has got to be 
inspiring for builders.


Chris K


On 5/18/2021 5:35 PM, Flesner wrote:




With luck, and if you're interested, you might be able to read my 
entry at


https://www.dropbox.com/sh/fccf8vo1pc6lq8i/AACenuEYBmJbAh7kg4WMxdnUa?dl=0

Larry Flesner



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KR>Re: Trainer idea

[Chris Kinnaman]

Don't trap yourself with a false notion that if everything is not 100% 
optimum, the airplane will fall out of the sky. Keep it simple. The idea 
is not to stretch the limits of the airplane's capabilities but to fly 
within the known capabilities. If the airplane doesn't fit the mission 
you desire, maybe a different design will be a better fit.


My $.02, Your Mileage May Vary.

Chris K


On 5/13/2021 3:23 PM, Dr. Feng Hsu wrote:



May be there is a better way to stretch out the CG envelope just a bit more
without modifying the fuselage or increase the HP of the powerplant,
perhaps?

Another rudimentary solution might be just to install one or two two-gallon
water tank to be placed where to make the CG just a bit tail heavy, and the
pilot could easily pull open the valve to dump the water quickly as needed.
A 2nd weight-balancing water bottle could be installed in the front to make
quick CG adjustment through dumping or pumping water back & forth This
could help stretching up the CG tolerance practically and cheaply, right?!

Stay and fly safely!

Dr. Hsu




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KR>Re: KR2 C of G range.

[Chris Pryce]

The safe thing to do is test your CG range with moveable ballast. I
initially operated in the recommended 6 inch range. I decided to test and
expand that range with moveable weights. I've successfully tested my range
to 6.75 inches aft using 100 lbs of rocks in the seat and 30 pounds of
weights that I took off with in front of the spar and then moved to behind
the rear spar. This gave me an opportunity to take off in a known stable CG
and then test it farther aft at a safe altitude. After feeling out the
controls, I was able to verify that I could land at that CG. This allowed
me to test the controls before taking on a bigger passenger. After testing,
I have successfully flown with two American sized adults and a reasonable
amount of fuel for cross country.

That being said,  I have a strecthed KR-2S with a Corvair...as Larry says,
your results may vary.

Chris Pryce
Vacaville, CA

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KR>KR-1 Plans

[Chris Kinnaman]

Does anyone have an unused set of KR-1 plans they are willing to sell?

Thanks,

Chris K



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KR>Re: KR Trainer

[Chris Pryce]

Gerald,

I live in Vacaville and have my KR at Nut Tree (KVCB). I would be more than
happy to make a quick hop to Marysville to show you my KR.

Chris Pryce
Vacaville, CA
850-368-6902


On Thu, May 6, 2021, 02:31 Gerald Campbell  wrote:

> Hello
> I hope you are doing well I bought what I have in the KR world from Tim
> Brown and was all excited but all that is gone for the KR world has been a
> disappointment. I tried to buy the wings video from NV Aero and Steve said
> that was no more and I can not find anyone close to me (I live in
> Marysville California) that has or is working on a KR. When I brought what
> I have I had a friend that was and A&P IA but about the time I bought my
> stuff he got sick and did not make it and I do not know enough to finish
> what I have and feel good about me or someone else flying the plane. I
> looked at this and believer if someone had some classes or get togethers
> where people could learn more about the KR it would be a big hit but right
> now I feel like the KR world is fading and fading fast!
> Gerald
>
>
> <https://list.krnet.org/empathy/list/krnet.list.krnet.org/-Search>

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KR>Re: KR Trainer

[Chris Kinnaman]

This is a great idea. It can only help.

Chris K


On 5/5/2021 7:36 AM, victor taylor via KRnet wrote:

Hello KR builders,
An opportunity to put together a trainer has come up. I spoke with Mark and he 
is onboard with this idea. I am willing to buy and set up a KR2 for training 
and get an exemption from the FAA so we can legally train in it.
Victor Taylor
CFII




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KR>Re: KR2S - Single seat first Flight

[Chris Kinnaman]

Congratulations! That's a really nice KR.

Chris  K


On 4/12/2021 5:23 AM, Christo Theron wrote:

  After Years of building, Neville Ferreira test flew my KR2 and put it in a 
video.
https://www.youtube.com/watch?v=jkb9C-PuHAE&t=1s

Christo Theron
South Africa

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KR>AVweb Article re: Sun n Fun

[Chris Kinnaman]

Nicely written reminder/refresher about arrivals, ATC, PIC, Sun N Fun, 
etc. on AVweb:


https://www.avweb.com/insider/reminder-pic-authority-is-absolute/

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KR>Re: liability insurance

[Chris Pryce]

I got insurance through Falcon. I had to fly uninsured to get enough time
before they would cover me due to lack of time in type and tailwheel time.
I believe it is somewhere around $1500 annually for 25K hull insurance.
That's with me having my ATP and 3000 hours.

Chris Pryce
Vacaville, CA

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KR>Re: NOTICE: KRnet transition to Mailman 3 tomorrow!

[Chris Kinnaman]

Dr Hsu - I got your message from the KR list. I can't tell if the list 
has changed over to the new server yet but messaging seems to be working 
at the moment.


Chris K


On 3/12/2021 11:09 AM, Dr. Feng Hsu wrote:

Sorry, I forgot the link for the video:

https://youtu.be/ZA1rSoiwS2I

Stay safe & fly high!

Dr. Hsu



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Re: KR> Wheel Pants

[Chris Pryce via KRnet]

I recently contacted Klaus at Lightspeed and he sold the molds to
aerocomposites in Ukiah, CA. They are in the process of making a set for me.

Chris Pryce



> Personally, I used Klaus Savier (Light Speed Engineering) wheel pants,
> but he's been unresponsive when asked about making any more, so I
> suspect he's "moved on" from wheel pants also.  That's likely because RV
> wheel pants appear to be almost identical to the Light Speed ones, and
> are a good fit also.  That's what I'll use on N56ML, since I tore them
> both up in my terraced field.
>
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Re: KR> OOPS

[Chris Kinnaman via KRnet]

No worries, George. There probably are others on the KR List who needed 
to hear what you had to say as well, and can put your words of 
encouragement to good use. Thanks for hitting "reply all".


Chris K


On 2/1/2021 11:03 PM, George via KRnet wrote:

Apologies to one and all.

Prior message was meant to be private to Paul, but stuff happens.

George





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Re: KR> building material?

[Chris Kinnaman via KRnet]

Michael,

I'm not sure if you're planning to use a PVC or XPS (Is that expanded 
polystyrene?) in place of plywood as used in the fuselage of the KRs, 
for example. The plywood is structural in the case of a KR-type fuselage 
box. In this type of construction the foam is typically used to give 
shape for the overlaid structural glass layers, such as the wing 
surfaces. Typically any foam used in aircraft construction like this is 
ignored as contributing anything to the strength of the finished 
structure. It's just to establish the shape.


That being said, I'm confident you could build a wing using foam ribs, 
sheeted with, say, .062" E-glass printed circuit board fiberglass 
laminate, and you'd have a structure with strength comparable to a wing 
with wood ribs and, say, 3/32" plywood skins. You would need a lot more 
ribs than what is found in the KR wing structure though. A different 
type of structure would have to be designed, more along the lines of a 
wood wing - stick or ply ribs, wood spar, plywood skin. In this case the 
foam ribs would be load-bearing structural members. It looks to me like 
the ribs in a KR wing are not carrying any load at all. They along with 
the foam between them position the skins which are molded over them and 
in the process the skins are bonded to the spar caps. You would have a 
very tough time trying to curve .093" (3/32") e-glass for wing skins, 
and having worked with both I believe 3/32 ply is lighter than .093 
glass and stronger than .062 glass but I have not tested to compare. In 
very cold temperatures the ply retains its flexibility and e-glass 
becomes noticeably brittle.


If you're thinking of glassing over foam attached to the fuselage sides 
and bottom, don't. The skin needs to be attached to the truss structure 
with an adhesive bond. Use a skin made of all glass if you can't get the 
plywood. Don't build with foam between the truss and the skin. No load 
can transfer to the skin, the foam will distort and probably begin to 
crumble with any shear loading.


Burning PVC does release toxic fumes when burned including dioxin, a 
known carcinogen along with others which are dangerous and toxic in the 
short term. But if your foam is burning in flight you have other bigger 
problems to deal with, unfortunately...


YMMV

Chris K



On 2/1/2021 10:38 AM, Michael via KRnet wrote:

Greetings

At the moment I am still completing the 90% complete, 90% to go stock KR-2
project that I am hoping to finish in the next year to 18 months and then
get airborne.

The question I asked was more of a theoretical one for a future planned
project after this one and because finding some of the materials taken for
granted elsewhere in the world has been a challenge here.  I have spoken to
a few local suppliers while running around buying bits & pieces and the
response has been positive and most have stated that PVC or XPS similar
laminates would be stronger and lighter than the equivalent marine-ply
although their experience is in general construction or boat repair and not
aircraft construction.  I am trying to find the article where one
manufacturer went as far as to say that their structural XPS or PVC is 24%
lighter for the same comparable strength than plywood.

They are also non-flame spreading (ie will melt and might burn in a fire
but will not propagate a fire) and will not create burning blobs or noxious
fumes like standard polystyrene.

This all said, I am still far from finding a perfect alternative and seeing
some of the other discussions, I am not the only one :)

Regards
שָׁלוֹם עֲלֵיכֶם (Shalom aleichem)

Michael L Griffin
mileg...@gmail.com
Fax : 086 733 0650
Cel : +27 83 462 0462
Please consider the environment before printing this email

He who play in root,
  eventually kill tree.

Linode Private Server  :: http://goo.gl/OnpGMS
EvE Online 21day trial :: http://goo.gl/TAZSJ8


On Sun, 31 Jan 2021 at 16:48, Flesner via KRnet 
wrote:


Michael Griffin, have you made any progress on selecting building
material / or made plans to proceed on  your project?  Any luck
contacting current or past KR builders in the country?  Inquiring minds
want to know.

Larry Flesner


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Re: KR> KR2 Canopy latching for forward lifting canopy

[Chris Kinnaman via KRnet]

Michael,
Happy New Year and a Belated Merry Christmas! Don Reid's canopy latches 
for his front-hinged canopy look like they do the job you need though 
they aren't exactly what you describe. Pretty light, though.


https://aerofoilengineering.com/KR/photos/Latch/kr_latch.htm

Chris K

On 1/1/2021 1:21 AM, Michael via KRnet wrote:

Greetings All

   I trust you all had an awesome and blessed Christmas and I wish you a
fantastic 2021.

   I have almost finished the KR2 fibreglass seats which I chose so I could
learn where mistakes are not dangerous or really costly and want to tackle
securing the canopy with latches and locks etc next.  My canopy opens
forward similar to Mark's photo : http://www.n56ml.com/04103050m.jpg





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Re: KR> Merry Christmas

[Chris Kinnaman via KRnet]

LOL Thanks Larry, Merry Christmas and Happy New Year to you, and to all 
of the KRNetters.


Chris K


On 12/24/2020 6:53 AM, Flesner via KRnet wrote:




THE DAY BEFORE CHRISTMAS


‘Twas the day before Christmas and out on the ramp

Sat a little KR, a mischievous scamp

He should be in his hangar or so he was told

But he just had to see what the day would behold

He’d heard of this fellow all dressed up in red

He was told there were reindeer that powered his sled

He couldn’t believe that a sleigh could take wing

He’d been born in a shop where logic was king

With patience he sat there till day turned to night

And that’s when he saw it, a twinkle of light

It seemed headed his way and it gave him a chill

When he heard what seemed thunder just over the hill

The rumble got louder, he was frozen in stare

There were thirty six hooves all pounding the air

There was anti-collision that flashed on the nose

And the elf shook with laughter from his head to his toes

He was headed down final, you could tell by his grin

That he didn’t fly patterns and he landed downwind

He knew KR waited so he stopped for a chat

They talked as he dusted the snow from his hat

Too soon they were leaving they were off in a leap

They were picking up speed and climbing out steep

They flew straight as an arrow and it’s only a guess

That Rudolph was using his new GPS

And then it was over they were all out of site

And he couldn’t believe what was told him that night

He rolled back to the hangar but the invite was clear

“If you install an aux tank you can join me next year”

YEEHA

Larry Flesner12/24/2005

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Re: KR> Why have wing Tanks?

[Chris Kinnaman via KRnet]

If you've ever seen a post-crash fire kill someone, or if you have ever 
lost friends or family in a post-crash fire, or if you even smelled 
smoke in the cockpit, you might have an idea why some people regard fuel 
in the wings as safer than a fuel tank in the fuselage. I saw it happen 
right in front of me, a crash on final, one occupant - the CFI - got 
out, and the student died in the fire. It's hard to imagine the amount 
of energy released by a gasoline fire until you see a big one. A couple 
who were friends of my wife and I were killed when flying in a homebuilt 
with the common tank-between-panel-and-firewall setup. They experienced 
a loss of power and he landed in a highway median. The grass obscured 
some large rocks which stopped the airplane hard on rollout and ruptured 
the fuel tank, resulting in the fatal fire. Witnesses said the airplane 
was not moving very fast when it stopped.


My aviation mentor, who had thousands of hours of military and general 
aviation flying in everything from mid-50s interceptors to tankers to 
WWII warbirds to J-3s to twins to gliders, including over one hundred 
DIFFERENT homebuilts, and investigated accidents while in the USAF, 
seemed to think fuel in wing tanks was significantly safer than in the 
fuselage. Don't let someone else make up your mind for you by arguing 
for or against relative merits. Make your own decision using YOUR best 
judgement and considering all available options, without falling for The 
One True Way. I know how I'm going to build my own fuel system.


Chris K

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Re: KR> Cowling?

[Chris Pryce via KRnet]

I used WW's KR-2 cowling which is still available to order. The one warning
I will give you is that it was not made to the stock firewall height. You
have to make your firewall taller anyway to clear the distributor and other
things like Mark did. I had to modify mine to work but it worked out great.

On Sun, Dec 13, 2020, 10:36 Mark Langford via KRnet 
wrote:

> David Stacchini wrote:
>
>  > Does anybody know where I can purchase a set of engine cowls for a
> KR-2S?
>
> As Joe said, I don't know of anyone making cowlings expressly for the
> KR2S anymore.  I also have a set of lightweight molds (two layers of 9
> ounce glass) that I pulled off of a plug that I made for plane, but as
> Joe said, it costs a fortunate to ship those now.   One option is what
> Chris Pryce used on his plane, which appears to be the cowling offered
> by Sport Performance Aviation (the "Panther" people) in Florida, but
> shipping on that is going to be high as well, although only one way, at
> least.  See their "universal" cowling at
> https://flywithspa.com/product/panther-universal-cowling/ , and they
> also have one for the Corvair at
> https://flywithspa.com/product/panther-corvair-cowling/   that's $175
> cheaper, but may be tight, depending on your engine.  This is probably
> what Chris used.  The Corvair is pretty small, so the VW may be the only
> other engine this cowling will accommodate.
>
> Mark Langford
> m...@n56ml.com
> http://www.n56ml.com
> Huntsville, AL
>
>
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Re: KR> First Flight 722KC

[Chris Pryce via KRnet]

Thanks Mike. Yes, it is the larger 3.0L and a Sensenich 54x60 carbon fiber
covered wood prop.

On Fri, Dec 11, 2020, 13:45 Mike Stirewalt via KRnet 
wrote:

> Holy crap Chris . . . you did it!!  The last time I looked at your build
> site your Corvair was in pieces (as you did the re-build) so to see that
> you made it through the long process of building such a wonderful plane
> is so admirable . . . I can't express enough congratulations on this.
>
> Did you use the larger Corvair engine (of the two sizes I know about)?
> That prop looks mighty nice . . . Sensenich?
>
> Love to see some stats once you've gotten through the shakedown flights.
>
>
> Mike
> KSEE
>
> 
> Sponsored by
> https://www.newser.com/?utm_source=part&utm_medium=uol&utm_campaign=rss_taglines_more
>
> Trump Aide Threatens FDA to OK Vaccine
> http://thirdpartyoffers.juno.com/TGL3141/5fd3e81963a6e68195312st02vuc1
> US Might Exceed 9/11 Deaths Daily for Next 3 Months
> http://thirdpartyoffers.juno.com/TGL3141/5fd3e81986ec868195312st02vuc2
> Amid COVID and the Holidays, a 'Profound' Move by 'Fierce Rivals'
> http://thirdpartyoffers.juno.com/TGL3141/5fd3e819aa86368195312st02vuc3
>
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KR> 722KC flight video

[Chris Pryce via KRnet]

Here's the landing video from my first flight of 722KC

https://youtu.be/VGHg8Mb3ScE

Chris Pryce
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Re: KR> First flight of 722KC

[Chris Pryce via KRnet]

I have a lot of footage to rummage through but yes, I've got grins from
multiple angles.

On Thu, Dec 10, 2020, 12:41 Phillip Matheson via KRnet 
wrote:

> Did you manage a photo of the KR GRIN
> It stays around for quite a few flights.
>
> Congratulations
> Phil Matheson.
>
> Sent from my iPhone
>
> > On 11 Dec 2020, at 06:06, Chris Pryce via KRnet 
> wrote:
> >
> > Net heads,
> >
> > 722KC took to the skies for the first time today. I got a solid 45 minute
> > flight and a lucky greaser of a landing. I have a small oil leak to fix
> but
> > overall a great flying airplane.
> >
> > Chris Pryce
> > Vacaville, CA
> > ___
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KR> First flight of 722KC

[Chris Pryce via KRnet]

Net heads,

722KC took to the skies for the first time today. I got a solid 45 minute
flight and a lucky greaser of a landing. I have a small oil leak to fix but
overall a great flying airplane.

Chris Pryce
Vacaville, CA
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Re: KR> My KR 2 Project Is for sale

[Chris Kinnaman via KRnet]

FWIW I had no problems with the original link. Pics opened fine.

Chris K


On 12/9/2020 6:49 PM, Bernard McLean Sr via KRnet wrote:

Go to
Bmcleankr2photos.Shutterfly.com/

Sent from my iPhone


On Dec 9, 2020, at 7:50 AM, Randall Smith via KRnet  
wrote:

I tried to get on but I do not have a Shutterfly account. Take pictures of 
that KR and put it on YouTube and everybody can go look.

Sent from my iPhone


On Dec 9, 2020, at 7:33 AM, Joe via KRnet  wrote:

I have the same problemJoe.

   -From: "shafferj455js--- via
KRnet"
To: "KRnet"
Cc: shafferj45...@twc.com
Sent: Tuesday December 8 2020 10:42:27PM
Subject: Re: KR> My KR 2 Project Is for sale

I tried again, and it still tells me that " Document not found".

-From: "jl.songbird--- via
KRnet"
To: krnet@list.krnet.org
Cc: "jl.songb...@juno.com"
Sent: Tuesday December 8 2020 9:06:22PM
Subject: Re: KR> My KR 2 Project Is for sale

John. I works for me. Click the link and then click Pictures and
Videos.
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Re: KR> Sport aviation article

[Chris Kinnaman via KRnet]

Well done, Larry! I hope they follow up on your suggestion.

Chris K


On 11/25/2020 4:54 PM, Flesner via KRnet wrote:


I received my "on-line" copy of Sport Aviation today and briefly read 
part of an article titled "Revolutionary Homebuilts".  I was 
disappointed to again find the KR  a forgotten fact of history.  I 
immediately posted a letter to the editor as I have copied below.


Larry Flesner


To the Editor,

Glancing through the latest on-line issue of Sport Aviation I stopped 
to read a portion of the "Landmark Homebuilts" article.  I soon 
realized that the lowly KR series was again the forgotten stepchild in 
homebuilt aviation.  On page 81 Burt Rutan is credited with 
"revolutionary thinking" when using surfboard technology of "foam and 
fiberglass construction".  While Mr. Rutan is probably one of the most 
"revolutionary designers" in the homebuilt arena,  he was not the 
first to use "foam and fiberglass construction".  It seems to be a 
forgotten fact of history that Ken Rand arrived at Oshkosh in 1972 
with the KR 1 and two years later with the KR2, both using foam and 
fiberglass construction. They both predated the VariEze, the KR1 by 
nearly 3 years.  Mr. Rutan didn't introduce composite construction to 
the homebuilt community as stated in the article, Ken Rand and Stu 
Robinson did with the KR design.  I seem to recall that the Lancair 
series aircraft were designed by an early KR2 builder.  I guess it's 
not too far out of line to say that everything "plastic" flying today 
is simply a branch of the KR family tree.  It would be nice if Sport 
Aviation could do an article on the KR aircraft and get with the First 
Lady of the KR community, Jeanette Rand to capture the history of the 
design before it is lost.


Larry Flesner

EAA member 356226

KR builder and flyer


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Re: KR> First Flight N729PK

[Chris Pryce via KRnet]

Yay!! Congratulations! I hope to be right behind you.

On Wed, Nov 18, 2020, 13:40 Pete Klapp via KRnet 
wrote:

> Netters
>
> YEE HAH!  Yet another KR-2S has joined the flying fleet!!! Flew for
> about one hour twenty minutes. Yes KR's are pitch sensitive but we were
> able to adjust. Returned to Mother Earth no worse for wear and tear. Will
> repeat as weather permits.
>
> Pete Klapp, N729PK,
> Canton, OH  (330)-388-2074
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Re: KR> tired of the mask/ back to the airport

[Chris Kinnaman via KRnet]

Thanks, Larry. Nice one! That about covers it.

Chris K


On 9/26/2020 6:26 AM, Flesner via KRnet wrote:


*COVID 19*

This bug I hear that’s floating round

Makes some folks sick, takes other down

When I approach I often hear

I’m sorry sir don’t get too near

Please keep your distance I am told

Don’t get too close don’t get too bold

Please note the marks upon the floor

That gives you spacing here to door

Now we must keep a proper space

And move about with covered face

So we don’t make our granny ill

There is no cure, there is no pill

Now plastic hangs in every place

That shields me from your smiling face

I guess you’re smiling through that mask

To know for sure I’ll have to ask

We move around from place to place

We’re asked don’t touch, don’t leave a trace

We wash our hands so we stay clean

It’s everywhere but never seen

In spite of all the world turns round

And I can only set and frown

And wish for times that used to be

Before this bug was chasing me

© 8/24/2020Larry Flesner, Carterville, Illinois

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Re: KR> KR2 Manual Excerpt

[Chris Kinnaman via KRnet]

In Kevin's case he needs a datum to establish engine mount length, 
therefore his prop flange location is an unknown. Easier to use 
firewall, LE, whatever is already there at this point.


Reading the replies got me thinking - Larry, or anybody else, is your 
engine mounted with the thrustline right down the pipe? Or did you 
incorporate an over-1-deg-down-1-deg TLAR adjustment some people have 
found effective when installing larger, more powerful engines on 
airframes designed for less power? Ex. Junior Ace, Cub/Super Cub, 
Wag-A-Bond, Fly Baby. The reason I ask is this would obviously put the 
prop flange out of plane.


Chris K


On 9/22/2020 1:10 PM, John Bouyea via KRnet wrote:

I KNEW this was going to start a topic discussion bearing on the likes of
nose wheel or tail wheel!
Here's my objection to using a prop flange or any other non-airframe
structural element; what happens when you CHANGE the whatever-it-is?
Make the engine mount longer, change your prop flange, use a different
spinner back plate and all your measurements go out the window.
Use the wing LE, the firewall or some other airframe structure and it never
moves.
End of my campaign...
Bou

-Original Message-
Subject: Re: KR> KR2 Manual Excerpt
Larry Flesner wrote:
  >>  I would suggest some distance from the main gear
contact point (the axle) out ahead of any point of the aircraft.  That
makes all numbers positive.  <<

Then Langford wrote:
the main problem I see is that you're trying to measure with accuracy to
a point that you can't hang a tape measure on.  As long as you pick the
farthest forward "hard" point that's not going to change (like the front
face of the prop hub), you can then mount an aluminum angle or other
straightedge to it, rotate it to positioin it logitudinally aligned with
what you're measuring to, hang your tape measure end on it, and stretch
the tape until you nail the distance.  Result, one simple directly
measured number gets written down.





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Re: KR> sound and performance check

[Chris Kinnaman via KRnet]

Congratulations Stef, we've enjoyed following your progress!


On 8/21/2020 2:45 AM, Stef den Boer via KRnet wrote:

Hi guys,





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Re: KR> Roller bearings

[Chris Kinnaman via KRnet]

4 stroke Kawasakis of that era had roller cranks. I never had any 4 
strokes of other mfrs apart in that time frame, but my 2 stroke Kawis 
and Yamahas certainly had rollers. My plain-bearing Kawasaki and Suzuki 
4 strokes of the early & mid 80s were equally bulletproof even when run 
a number of seasons of endurance racing, never had a lubrication system 
issue though they were run far harder than any street bikes. The problem 
with rollers was that they could tighten up when they got hot and power 
was lost overcoming the internal friction. The engines could be built to 
tighter tolerances and would produce more consistent power over longer 
periods of time with pressure-fed plain bearings. That's why the bike 
mfrs changed to high(er) pressure oil pumps and plain bearings. This was 
before the switch to liquid cooling. I believe the same principles, for 
the same reasons, were applied years earlier by Continental, Lycoming, 
and Franklin in the design of their aircooled engines for light aircraft.



On 8/12/2020 4:12 PM, Mike Stirewalt via KRnet wrote:

This isn't relevant to anything but I'll test the group's patience anyway
. . .

Over the last 25 years I've had two Suzuki GS-850G motorcycles.  The
first one, a '79, eventually blew a head gasket at 75+ thousand miles and
I've kept it for a parts bike.  The second one, an '82, is my daily
driver.  Born in the heyday of the 750's (Honda's, Kawasaki's, Suzuki's,
etc.), that is in the mid-70's and on into the 80's, these four-in-line
engines took the motorcycle world by storm and of them all, Suzuki's
design has proven to be the most  resiliant . . . the most "bulletproof"
- a conclusion arrived at by those bike journalist/historians who
periodically write articles on this subject.  One reason (I've repeatedly
read) for the Suzuki's durability is due to their use of rollar bearings
on the crankshaft.  I don't know enough about what the other companies
used back when these Suzuki engines were new, but I'm assuming they used
plain bearings.  Could be wrong.  What I can say for sure is these
Suzuki's of that era have proven (in my limited experience) to be the
most reliable machines ever built.  A conscientious owner would of course
pay attention to oil and filter changes, valve adjustments, transmission
and final drive fluid replacement, etc. but the amazing thing about these
Suzuki's of that era (and perhaps since, I've no idea) seem to soldier on
whether any attention is given to maintenance or not.  They seem to be,
if not the most foolproof mechanical devices ever invented, certainly up
near the top of the list.  Using roller bearings to sustain the
crankshaft in these bikes seems to have been perhaps the most critical
design factor in their longevity.   Bike fundis much more experienced
than I have made this observation over the years so, based on my many
years of hands-on experience with these utterly reliable bikes, I can't
but agree.  The fact that knowledgable people found it relevant to make
this distinction re the Suzuki crankshafts, makes me think the other bike
makers _didn't_ use roller bearings.

If Harleys use roller bearings on their cranks, I finally have something
good to say about Harleys!

Mike
KSEE
   



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Re: KR> Roller Cranks?

[Chris Kinnaman via KRnet]

Losing oil pressure is bad right away in a plain bearing engine, 
sometimes not so in a roller bearing engine. 4 stroke roller cranks can 
run for a remarkably long time after losing oil pressure, though 
sometimes they don't. You can't count on it.



On 8/11/2020 2:52 PM, Flesner via KRnet wrote:

On 8/11/2020 3:12 PM, Chris Kinnaman via KRnet wrote:
Kawasaki went to plain bearings on their 4 strokes after that due to 
the greatly reduced internal friction and reduced rotating mass, 
which would seem to be the advantage exploited by (most of?) the 
airplane engine folks so many years before.


+++ 



I'm not an engine guru but I was wondering why you would want roller 
bearings, which I assume would be much more expensive and, as you 
stated, less adventurous. then plain bearings.  The "plain" bearings 
in my 0-200 went 2400 hours and 40 years and would have gone another 
500 hours easy if I had left them alone.  They left not a single mark 
on my crank anywhere and my crank measured very usable by two 
different shops, better than minimum service limits and nothing out of 
round.  I let no one touch it to screw it up and reassembled using new 
bearings.  I'm guessing it will perform longer than I will.


Larry Flesner


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Re: KR> Roller Cranks?

[Chris Kinnaman via KRnet]

2 strokes, of course, but I guess I should have stated 4 strokes. The 
last 4 stroke roller bearing crank I saw was a 1978 or 79 Kawasaki 
KZ1000. We welded a blob across a point on the inside edge of the throws 
and outside edge of the pins to resist the throws from twisting - which 
happened on the drag engines but was probably unneeded "insurance" on 
the road race engines. Kawasaki went to plain bearings on their 4 
strokes after that due to the greatly reduced internal friction and 
reduced rotating mass, which would seem to be the advantage exploited by 
(most of?) the airplane engine folks so many years before.



On 8/11/2020 1:43 PM, Mark Langford via KRnet wrote:

 Chris Kinnaman wrote:

> It would be
> interesting to find out - Anybody on the list know of any A/C 
engines in

> common use with roller cranks?

Hirth aircraft engines (at least some of the two stroke engines) use 
roller cranks.  We developed a new version of one of them for a US 
military contract 15 years ago, and I made a trip to their factory in 
Germany to see the factory, including crank assembly with a giant 
press.  Not sure you could say "in common use" though.


Mark Langford
m...@n56ml.com
http://www.n56ml.com
Huntsville, AL


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