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Old 11-10-2015, 02:24 PM
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Join Date: Mar 2013
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Note that the dive test in most of these charts assumes a symmetrical airfoil. With a flat bottom airfoil the dive test might say you have the CG too far forward until you have pushed the CG back beyond where its possible to recover from a spin.

Do a second check of level flight just reducing speed without re-trimming. The plane should not have the tail come down. (unless you are doing 3D... they often push the CG back that far)
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