KR> Elevator length 2

[bdazzca...@aol.com]

Well I went with Mark's AS5046-75 tail airfoil. But someone said  to use 
some balancing tabs on that as well for more stability. I left my rudder  to 
the size for the AS5046-75 airfoil as well but if I can get better  
performance with changing it let me know. With my KR I widened it 10" and  
stretched 
it to 14' thinking I was going to have passengers at some point. Im  
building it for speed and range. I cant rememer what wing airfoil I went with  
but 
im thinking its the AS5045/8. If anyone knows of a better airfoil for the  
wings too PLEASE send. 


David


In a message dated 10/16/2009 8:47:30 A.M. US Mountain Standard Time,  
f...@renotruss.com writes:

Jeff,  what is significant mean on your rudder size?

Fred Johnson
Reno,  NV


Jeff Scott wrote:

FWIW, I also added to the cord of the  rudder, which also made a
significant improvement to the ability to slip  the plane and made a big
improvement to the crosswind landing capability of  the  aircraft.





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KR> Elevator length

[jscott.pi...@juno.com]

I extended the rudder 3" at the bottom and 1" at the top.  -Jeff


On Fri, 16 Oct 2009 08:07:39 -0700 "Fred Johnson" 
writes:
> Jeff, what is significant mean on your rudder size?
> 
> Fred Johnson
> Reno, NV
> 
> 
> Jeff Scott wrote:
> 
> FWIW, I also added to the cord of the rudder, which also made a
> significant improvement to the ability to slip the plane and made a 
> big
> improvement to the crosswind landing capability of the aircraft.
> 
> 
> 
> 
> 
> ___
> Search the KRnet Archives at 
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KR> Elevator length

[Fred Johnson]

Jeff, what is significant mean on your rudder size?

Fred Johnson
Reno, NV


Jeff Scott wrote:

FWIW, I also added to the cord of the rudder, which also made a
significant improvement to the ability to slip the plane and made a big
improvement to the crosswind landing capability of the aircraft.

KR> Elevator length

[jscott.pi...@juno.com]

I haven't seen any replies to this question, so I'll give my opinion and
reference the testing I've done.  Please refer to http://jscott.comlu.com
and follow the link to the KR page.  There's a lot more detail there.  

I flew my KR with the stock 72" tail for 500 hrs.  Then I cut the tail
off and built a 96" span tail using the 0009 airfoil provided on Mark's
web site.  I've flown the plane another 300 hours since then.  I can't
think of any other KR that has flown with both tails.  In short, the
additional tail horizontal stab adds significantly to the pitch stability
of the plane.  It is a rock solid hands off flyer when properly trimmed. 
Map folding or shifting around in the seat is no longer an aerobatic
experience.  It also added significantly to the control pressures, (also
refered to as control or pilot feedback).  No more super light stick that
is easily over controlled.  It is still very light and quick as compared
to a certificated aircraft, but has a significant feel to the stick.  It
has a good feel to it at slow and cruise speeds, and the elevator is
actually a bit heavy when the speeds get up around 200+ mph, which, in my
opinion, is a desirable feature.

I've been told that I wasted my time, was ruining the "sporty" feel of my
KR, and that I had no idea what I was doing.  But I don't know of anyone
else that has done the same testing and can discuss or demonstrate the
results.

FWIW, I also added to the cord of the rudder, which also made a
significant improvement to the ability to slip the plane and made a big
improvement to the crosswind landing capability of the aircraft.

Jeff Scott
Los Alamos, NM


On Thu, 15 Oct 2009 18:00:27 EDT bdazzca...@aol.com writes:
> Hey netters,
>  
> I was just curious on  how long people are making their 
> elevators. 
> I think I made mine 84" and  that's including 5" each side for the 
> balance 
> tabs. Is this too excessive or  about right for stability?
>  
>  
>  
> David Swanson
> ___
> Search the KRnet Archives at 
> http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
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KR> Elevator length

[bdazzca...@aol.com]

Hey netters,

I was just curious on  how long people are making their elevators. 
I think I made mine 84" and  that's including 5" each side for the balance 
tabs. Is this too excessive or  about right for stability?



David Swanson