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Old 11-11-2015, 03:02 AM
Look out for that tree!!!
Larry3215's Avatar
Join Date: Mar 2006
Location: Gig Harbor, Wa USA
Posts: 7,061

Good advice from both of you.

This particular trimming chart was designed for and by IMAC/pattern/power flyers. This particular "dive test" is different from Mark Drella's sailplane version in that it calls for a banked turn or inverted test under power rather than dive to set CG. Their "dive test" is to set decalage instead of CG. The two settings are so closely interrelated that I look at it like 3 different ways to dial in CG/trim/decalage.

They want a very neutral responding model as far as inverted flight and up/down lines are concerned. Not quite but almost 3D settings for CG and almost equal inverted/upright flight and zero coupling in knife edge flight. Actually they like as little coupling in all axis as possible.

Its comes down mostly to how far you take each adjustment = personal preference and skill level.
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