The stick forces in my 801 are very light, particularly so with the dual stick conversion. So maintaining altitude except in calm air (the light wing loading doesn't help either).  Every time you hit a bump that kicks the tail up any the elevator gives strong feedback to the stick and it moves. no other aircraft I have ever flown had such strong feedback.  A moderate bump and if you dont have a tight grip, the stick can fy out of your hand. Forget trimming it to fly hands off for longer than it take to scratch your nose.  I suspect that it is because the elevator is not mass balanced, nor is there an elevator bob weight in the tail. and the overhung mass of the elevator exceeds the aerodynamic forces trying to hold it in position.

It's a work out in bumby air, and trying to fly IFR in anything but super smooth air is an invitation to get busted for altitude excursions.

Is anyone elses 801 behave so twitchy in pitch? If so, what have you done to correct it?

I am considering either some means of mass balancing the elevator or just adding some controlled friction to the elevator controls.   Anyone have any suggestions?

Thanks. 

Sam McNair

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I have an 801 kit but its a ways away from first flight. My first thought is a hydraulic dampener. Popular with high speed desert racing motorcycles, hydraulic steering dampers greatly reduce terrain induced steering twitch that can oscillate into a catastrophic lock-to-lock handlebar rotation which can be fatal at freeway speeds across baja. They dont noticeably restrict normal steering inputs and the adjustment valves allow for fine tuning.

I think something along these lines might help, maybe with a quick disconnect feature as a failsafe, but wait for someone with more experience flying an 801 to chime in.

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