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Gear?

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DOWN! Whatever pinion you're running drop 3 teeth off it, also since its sitting up high in a Revo put a fan on it and the speedie......
 
Yup I agree with Brushless, pinion down in size and/or spur gear up in size. Which ever you have an extra of. If you have to buy some it does not hurt to have spares anyway. Just make sure you set-up your gear mesh back up correctly and use lock-tight.
 
what size motor shaft? RR makes a cool 6 pack of pinions for pretty cheap. from 15-25t i believe.
 
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