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Old Jan 04, 2013, 05:13 PM
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That is interesting. I think I have a theory.

In any aircraft the torque reacted back through the airframe is equal to the amount of torque needed to drive the prop. So that won't change for any motor configuration.

However, for a mid-mounted motor there is the aft fuselage which is present (and isn't for a forward or rear mounted engine). The effect of this is to react the rotating component of the propwash (i.e. kill/disrupt the swirl effect) and if you think about it, the effect on the airframe opposes the effect of the motor torque. I can't imagine why the relationship with the C of G is a factor, but I am convinced that the flow straightening effect of the aft fuselage section must significantly reduce the reaction torque from the motor.

Sound feasible?
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