On my 701 I always have alot of nose up trim to neutrilize the stick.In the pictures of the plane in flight the elevator apears to be level on the top.I could put a simple indicator in the cockpit to check this in flight. Is the trim just holding up the unbalanced weight if the elevator? If so I could add a bungee to reduce this and get rid of the drag from the deflected trim. If it is actually trim should I just adjust the angle of the horizontal stabilizer slightly?

Scott Ehni

Views: 869

Reply to This

Replies to This Discussion

Hi Scott

Before adjusting the angle of incidence of the stabilizer(maybe a last resort) consider drilling out the rivets in the trailing edge of the elevator and rebending it to take care of your trim probs. Then rerivet( I used the next size bigger rivet). The trailing edge is a convenient trim tab. I had to do that on mine; as recommended by the Zenith tech guys; if I remember correctly. It's been a while. I think there is a newsletter article from way back on doing that; written by CH.

Very cool plane you got there


Where did the CofG come out on the airplane?




Hey Joe...Here is that article... it should be re-published again!  I asked Jon Croke to do that 3 months ago and nothing has happened at all!  Zenith should nev updated their 701 drawings when they changed to the 912 engine. There are a lot of builders flying around with that problem and they don't know it.

Joe send me your email address!




That is a thought.The CG is in the center and the horizontal stab is set up acording to the prints.

Thanks to all for the ideas.



New from Zenith:

Zenith Planes For Sale 

Classified listing for buying or selling your Zenith building or flying related stuff...

Custom Instrument Panels
for your Zenith

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, Dynon and Garmin avionics, and more.

Custom Upholstery Kits for your Zenith Aircraft:

Zenith Vinyl Upholstery Kits

Zenith Apparel from EAA:

Zenair Floats

Flying On Your Own Wings:
A Complete Guide to Understanding Light Airplane Design, by Chris Heintz

Builder & Pilot Supplies:

How to videos from HomebuiltHELP.com

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.

Aircraft Insurance:


West Coast USA:

Pro Builder Assistance:


Transition training:

Golden Eagle Aviation

Pianosa Flying Farm

Aircraft Spruce & Specialty for all your building and pilot supplies!

© 2022   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service