I have a dual throttle setup on my 701 with a Rotax 912ULS This is the kit that zenith provides with two cables. There seems to be a lot of pressure pulling the two throttle arms on the carbs back to full. If I take my hand off the throttle it will advance the RPM greatly. I have to tighten the throttle lock down very hard to stop this action. Rotax says not to change the carb springs. I took the springs off to see if it was a cable issue , but no problem with the cables. I did reattach the springs. Can't take left hand off throttle to set flaps or adjust elevator trim. Is there a better cable system out there that I am not aware of. or should I change out the spring to lighter tension ones.

Views: 330

Comment

You need to be a member of Zenith Aircraft Builders and Flyers to add comments!

Join Zenith Aircraft Builders and Flyers

Comment by Shay King on April 3, 2019 at 5:43am

Jerry,

There’s already quite a bit of discussion about this in the 701 forum.

A vernier throttle with friction lock is a good solution.

Be careful using weaker springs. You’ll find reference somewhere to Jon Crokes crash, he replaced his springs with weaker ones and during a go-around they weren’t strong enough to give him full power and he crashed.

Comment by Shawn Magin on April 1, 2019 at 1:28pm

I use the lighter springs offered by mcfarlane aviation...made a very noticeable difference.

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.


Zenith Homecoming Tee:


Zenair Floats


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


Builder & Pilot Supplies:

Aircraft Insurance:

 
 

West Coast USA:

 
Pro Builder Assistance:

 

Transition training:

Lavion Aero

K&S Aviation Services

Aircraft Spruce & Specialty for all your building and 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.

© 2024   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service