Diff

A field in Mixer used to create aileron differential.  The DIFF weight entered in a Mixer line applies to one side of the action and (100%-DIFF weight) on the other.  For example DIFF = 100% allows full movement to one side and 0% to the … Continue reading

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Differential

Short for “aileron differential”.  When ailerons are deployed, the up aileron “sees” less relative wind than the down aileron because the wing itself tends to block some of the incoming wind for the up aileron.  The result causes the up … Continue reading

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Direct Drive

A type of RC helicopter that uses a separate motor from the main motor to run the tail rotor.  Common for micro RC helicopters; unusual for large RC helicopters.