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General control line discussion => Open Forum => Topic started by: Larry Renger on August 15, 2010, 05:41:50 PM
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It seems to be consistent that my Sky Sport design turns outsides better than insides. I have two .061 models and now the .15 size one. I can fix it on each model by biasing the bellcrank or handle, but I would really like to build perfect trim into the design. My thoughts are to tweak either or both the thrustline and the elevator angle setting.
Anyone out there with a clue? (I am told that Jamisons do the same thing, and I am just finishing up one of those, too, so HELP??)
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seems to me that you are building the control system with incorrect geometery - I am only guessing that you are using 90 degree horns - which will make this happen.
There are a few good articles on how to build symetrical systems - i'll see if i can scan one in.
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I had an extreme problem with a 40 size airplane. I corrected it with 3 degree shims under the engine. the thrust-line was that much off.