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Old Jun 06, 2012, 08:11 PM
Rusty-Gunn is offline
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Kotzebue, Alaska
Joined May 2006
5,573 Posts
Down/right thrust... how do you measure the exact degrees?

I know we should add down and right thrust to the engine as used on a high wing plane. I hear some people say, for example, add three degrees down, and two degrees right thrust angle. How do you know you got the exact amount?

(To clarify ahead of time, I've always just guessed, using the TLAR method on my foamies. I have no idea how to make the measurements precise. Sometimes I got it good enough to fly right, sometimes I didn't.)

I've designed a trainer type plane, and got the firewall set squared up all round, and figure I'll add the down and right trust via adding washers to the engine mount, with the possibility of using wood shims if necessary. Yet, I don't know of the exact degrees are met.

How do you know if you got it right?
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