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Speed,Combat,Scale,Racing => Combat => Topic started by: Casey on September 06, 2020, 10:12:39 PM
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What is the effective movement range in degrees for a 2 inch bellcrank in a Nostalgic combat model?
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I have never used a 2 inch bell crank in the old combat planes. In that period of time it was the Veco 3 inch. Also used what area the space between ribs allowed. The control horn is where I adjusted for elevator deflexion. D>K
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I would stay with a 45 degree max each way.
That's a good number for ANY crank arm mechanism. Beyond 45 degrees each way, 90 degrees total, the actual output is minimal.
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+/- 45° is about right. I used that on quite a few Fast combat planes 1992-2002. Pushrod in the inner hole. The balance point was far enough back to make it responsive. It allowed me to put the bellcrank on the boom and still clear a bladder tube behind the spars, pretty much on the CG.
It worked quite well.