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I've finally found a good use for the Zenith Throttle handl

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kissell

Joined: 05 Dec 2006
Posts: 18
Location: Beavercreek, Ohio

Posted: Tue Sep 21, 2010 2:43 pm Post subject: I've finally found a good use for the Zenith Throttle handl

Yes , I use the original Zenith T-throttle in my 701 with a simple modification and have found it very good (over 170 hours now). The fix is to install a counter balance spring behind the panel which unloads the spring force from the carb’s. With proper adjustment the throttle will not creep and requires very little clamp force on the nylon friction block. One end of the spring is anchored to a small bracket using the same rivets that hold the nylon bearing in the panel. The other end attaches to the throttle rod with a small C-clamp that compresses a short piece of rubber fuel line (split) and is adjusted to load the installed spring so the throttle does not require any force to hold position. It’s simple, it’s cheap (Lowes has the springs) and if it breaks the worst that can happen is the throttle creeps to full power. This design avoids the Croke effect also.  

   

Bob in Dayton, the birthplace of aviation.  

N701UB  

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cscsail(at)gmavt.net
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Posted: Fri Sep 24, 2010 8:39 am Post subject: I've finally found a good use for the Zenith Throttle handl

I did the same thing --I removed the copilot  throttle and attached a spring to a short piece of throttle wire that penetrated  the firewall for the copilot throttle, then attached the aft end of the  spring to the instrument panel with a nylon tie wrap. It's a simple matter of  slowly tightening the ratcheting tie wrap until the right tension is achieved.  I've been using it for a couple of years with no problems. It works really well  !!!

 Gordon

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