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Permalink Reply by Norm Neuls on August 14, 2023 at 12:21pm

I had a similar situation on my 750.  I made a trim tab (approx. 4x8) installed at the end of the R flaperon attached with three 6-32 riv-nuts and machine screws.  I made a guess and bent it at 20 degrees down and that was just right.

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Permalink Reply by John Burns on August 14, 2023 at 5:27pm

Here is the Zenith factory solution in a video.  Zenith YouTube Flaperon adjust

It worked on my CH750 STOL just by hand squeezing the edge with my fingers.

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Permalink Reply by Andrew Rauert on August 15, 2023 at 11:45am

Thanks for the info I had a tough time trying to find information on this! I will start verifying that my ailerons are set up correctly first . Does anybody know the recommended degree deflection at neutral for the flaps?

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Permalink Reply by Jim and Amelia Isaacs on August 15, 2023 at 6:10pm

Andrew,

If your airplane did not have a heavy wing prior to removing the wings then find what changed when you reattached the wings and you will correct the problem.  If you visit the Zenith builders site https://zenithair.net/builders-page-for-the-ch701-stol/ you will find the drawing that shows the deflections and how to measure them.

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Permalink Reply by Andrew Rauert on August 15, 2023 at 10:01pm

Thanks so much this is exactly what I needed. I think the aileron control rods moved on me I had the jam nuts loosened when I removed the wings and I think one or both rotated on me.

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Permalink Reply by Jim and Amelia Isaacs on August 16, 2023 at 8:40am

Yes that could very well be your issue. Good luck!

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