ha ha i'm a c-5,6 quad myself!!! woot woot! what you're describing is cogging, if you give it a lil kick does it take off?? more voltage or a smaller pinion is the answer
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It's "Dr. _paralyzed_" actually. Not like with a PhD, but Doctor like in Dr. Pepper.
the motor is doing this with no load...no pinion....12 cells just to test...I plan on running 14 cells...I called castle they said it might be interference from my bec...its 1" from the reciever....I will move it and give it a try when my hands get home from work....aka...my dad