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Old 12-11-2009 | 07:20 PM
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Louis9624
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From: Martinez, CA
Default center of thrust

I had a low-wing aerobatic plane and crashed it. I bought a new one, the Pole Cat. I really like the way it looks and it is faster, but at full throttle it points up, and at low power it wants to drop the nose.My old plane stayed straight no matter what throttle setting. I have it figured out, the center of drag is higher on my new plane (being a high-wing) than the center of thrust. I have an idea, raise the engine. That will help put power inline with drag. But my fiberglass cowling wont't let me go more than about three-sixteenths of an inch. I have another idea, angle the engine downward. my cowling would allow that. the down thrust should counter the tendency to point up, and at lower speeds will be more neutral. It really bothers me because I keep thinking the elevator trim is all wrong. I have to trim in between both extreemes. Does anyone have this problem?