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extreme 380 motor..what gearing?

I'm running a 11/66T on my mrc right now and it's also really easy to mod the tranny and spur so they work together. But that's with a 18.5 brushless motor on a 3s. I would also run this gearing with a brushed motor as I've gone through 2 decent motors on a 11/60T gearing. Or at least go with a 11/62 gearing. It's not quite as hard on the motor even though it's 2 extra teeth.
 
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