Karl Kleimenhagen
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  • Peoria, IL
  • United States
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  • cole king
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  • Louis W. Ott

Karl Kleimenhagen's Discussions

601 UL plans wanted

Started this discussion. Last reply by Karl Kleimenhagen Jan 28. 2 Replies

If you have a set of 601 UL plans you'd like to be rid of, let me know.Continue


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Karl Kleimenhagen posted a discussion

601 UL plans wanted

If you have a set of 601 UL plans you'd like to be rid of, let me know.See More
Aug 17, 2021

Profile Information

Aircraft Model
Project Status
Just started
Building From
Engine installed (or plan to install)
Building Experience
Have worked on airplanes before
Flying Experience
Private Pilot
Building and Flying Info / Your Profession / Other Background Info
Profession: mechanical engineer
Zenith plans: 601-HD
Home Airport (ie. KMYJ)

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At 12:39am on March 17, 2016, Louis W. Ott said…

Hi Karl,

I didn't see the email. Any of these should work.




What questions do you have? I could take some more pictures. In my estimation the control harmony of the 601XL was horrible. Not too bad now.

At 3:17pm on February 25, 2016, Louis W. Ott said…


I have addressed each of the odd control harmony characteristics you mentioned. I have a 601XLB. Send me your email and I'll forward comments and pictures. Briefly, I added an anti-servo device to the elevator and spades to the ailerons.

Louis Ott


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