KR> Jon Kimmel Project

[Jeff Scott]

Wow Jon,

Is that the much traveled Dr. Dean, Mark Jones, Eric Pitts, and apparently now 
Jon Kimmel KR Project?  Glad to see the project is progressing.  Hope to see it 
flying one day soon.

-Jeff Scott
Los Alamos, NM


> Sent: Friday, June 13, 2014 at 10:29 AM
> From: "jon kimmel via KRnet" 
>
> You wrote Unless I'm mistaken, the "new wings" are only a new airfoil
> design optimized for the KR's performance envelope.  Nothing was done to
> change the wing spars, which are the structural part that transfer the
> loads.
> 
> That is true for the as5046.  The as5048 is inherently stronger since the
> spars are taller and the chords are further apart.  On mine, the chords are
> also thicker giving even more increase.
> 
> https://sites.google.com/site/mykr2stretch/
> https://sites.google.com/site/mykr2stretch/parts-for-sale

KR> Weight & Balance

[peter]

I'm trying to remember, but I think the typical flight-induced stress failures 
almost always occur in the tail attach area, not the wings. It is difficult to 
stress the wings to yield without stalling them. Therefore, the stronger wings 
would demand stronger empennage and engine mount too. regards, Peter



  On mine, the chords are
also thicker giving even more increase.

KR> Jon Kimmel Project

[Mark Jones]

- Original Message - 
From: "Jeff Scott via KRnet" 



> Wow Jon,
>
> Is that the much traveled Dr. Dean, Mark Jones, Eric Pitts, and apparently 
> now Jon Kimmel KR Project?  Glad to see the project is progressing.  Hope 
> to see it flying one day soon.

Jeff,
Nope, that is not the one. Eric still owns it and I could kick my own arse 
for selling it to him. I told him if he ever wants to sell it that I want to 
buy it back and he agreed to that. At lease that is what I remember. Right 
Eric?


Mark Jones (N886MJ)
Stevens Point, WI
E-mail: flykr2s at charter.net
Web: www.flykr2s.com

KR> Project

[Eric James Pitts]

Yes Mark you get first crack at it, start saving!

?
Eric Pitts
Terre Haute, Ind.

"Life should NOT be a  journey to the grave  with the  intention of arriving  
safely in an attractive and well  preserved body, but  rather to skid in 
sideways, chocolate in one hand,  body thoroughly used up, totally worn  out 
and screaming "WOO HOO what a  ride!"

KR> Weight & Balance

[Teate, Stephen]

"unless of course you're Mark Langford"

Since it is Friday I have to add my shot to this. When I was doing my 
preliminary weight and balance I went searching for information. As usual I 
ended up on Mark's project where he has a very nice table that lists his 
weights and moments. I didn't look real close but just printed it and took it 
home. The next morning I went looking for the pilot weight without really 
looking at the left side of the table where "Pilot" is actually labled. Anyway 
it seemed like some time had passed and I couldn't find anything that resembled 
a pilot weight. Finally I found pilot and looked across the line and still 
didn't see a normal pilot weight. I then remember holding my left finger on the 
Pilot line and my right finger on the weight line and moving across and down 
until I got to 145 pounds. I said out loud "145 pounds, what the heck is that". 
I was born 145 pounds! 

Stephen "225" Teate
Paradise, Texas



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KR> Weight & Balance

[jon kimmel]

You wrote Unless I'm mistaken, the "new wings" are only a new airfoil
design optimized for the KR's performance envelope.  Nothing was done to
change the wing spars, which are the structural part that transfer the
loads.

That is true for the as5046.  The as5048 is inherently stronger since the
spars are taller and the chords are further apart.  On mine, the chords are
also thicker giving even more increase.

https://sites.google.com/site/mykr2stretch/
https://sites.google.com/site/mykr2stretch/parts-for-sale

KR> Weight & Balance

[Oscar Zuniga]

Paul wrote-

> I wish we could come up with a new max weight  with the new wings.

Unless I'm mistaken, the "new wings" are only a new airfoil design optimized 
for the KR's performance envelope.  Nothing was done to change the wing spars, 
which are the structural part that transfer the loads.  In fact, I believe one 
of the design criteria for the new wing was that it would be possible to build 
to the AS504x airfoil using the same spars and WAFs as with the RAF48.  That 
being the case, using the new wings do not change the allowable loadings or the 
original structural calculations that determined the design maximum gross.  
Your own maximum gross may vary from design based on how you build the airplane 
or how you elect to test fly it.

Complete details and history on the development of the AS504x wing are here:
http://www.krnet.org/as504x/

Oscar Zuniga
Medford, OR

KR> KR2 Sold!

[MrKswildman .]

Just to let everyone know my KR2-trigear is sold,a long with the extra
motor.
thanks to everyone on this site for the support and everything, be safe out
there.
Galen Zortman
Tornado Alley Aircraft Company.
Pawnee Rock, Kansas