RCU Forums - View Single Post - Composite-ARF Integral, kinda build thread
Old 05-28-2008 | 08:07 PM
  #657  
Brenner
 
Joined: Jul 2007
Posts: 806
Received 12 Likes on 11 Posts
From: Bridgman, MI
Default RE: Composite-ARF Integral, kinda build thread

I measured mine with a digital level on a granite reference surface. I figure that my measuring setup was accurate to within +/- 0.05 deg. With this setup my stab was 0 degrees, both sides, and the both wings were 0.3 degrees negative.

Before I flew it I removed the wing locating pins with a dremel, and I refixtured both wings to 0.3 degrees positive. With this setup I flew with zero aileron trim, and about three clicks of up trim. I figure that if I had set the wings to 0.5 degrees positive that it wouldn't have required any up trim at all. As it was, the plane flew reasonably well. I mixed a little down elevator with low throttle to get the downlines straight, and I needed a little aileron mixed in with rudder to get it to do a good knife edge.

However, one definite impression that I had was that the plane didn't seem to lock in like other planes that I have had. It was always coming out of my turn-around manouvers on the wrong heading, and I was constantly fighting with the rudder to keep it on track during looping manouvers. After pondering things for a bit, I attributed my problems to the cocked and warped rudder. All in all not a very satisfying experience. However, I'm hoping that Comp-Arf has fixed their fixtures, and the planes that people are buying now are straight, which seems to be the case, listening to all the people on this forum who seem to be happy.