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Catz631(at)aol.com
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 Posted: Sun Dec 23, 2007 5:50 am Post subject: simple elevator trim system |
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I thought I would share this with the group.Perhaps someone else could use it also.I am a heavy pilot (230lbs) and as such I am always holding forward stick at cruise.The flap reflux is not enough to overcome this so I decided to come up with another method of trimming the pressure off. I did not want to cut open the elevator to install an electric trim so I devised another method that was similar to the one used in another experimental I owned(Nesmith Cougar)
I installed a small bracket on the floor to hold one end of a small bungee (bracket held down by one of the radiator attach bolts going thru the floor board) I then found an Adel clamp ,removed the rubber and lined the clamp with a small piece of Teflon cowl tape (slick and will not scratch the stick) I attached the clamp to the pilots control stick and used a wing nut and bolt to tighten the clamp to the stick so that by adjusting the wingnut, I would have just enough friction to barly slide it up and down the stick. The other end of the small bungee(about 6 in long ) attaches to the Adel clamp.The idea here is as you are flying along you reach down and move the clamp up the stick with your fingers and the tension on the bungee increases until no forward pressure is required and you fly hands off. On landing just move the clamp to the bottom of the stick and pressure is gone.VERY SIMPLE and works perfectly.
Dick Maddux
Kitfox 4-1200
Rotax 912UL
See AOL's top rated recipes and easy ways to stay in shape for winter.
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LarryM
Joined: 27 Nov 2007
Posts: 63
Location: Genoa, IL
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| Posted: Sun Dec 23, 2007 2:22 pm Post subject: Re: simple elevator trim system |
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Dick,
That sound like a great system. I always thought that the reflex makes the nose come up, and lowering flaps a few degrees brought the nose down?
Larry
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