Originally Posted by
Jmnay_83
I run 21-81 on all stock and mod motors. It is perfect on both.
bad suggestion....unless your mods you are running at 12 turn mods...which then 81/21 is the suggested gearing....if you run a 11 turn 21 would be overgeared, and you would see high heat. on a 13 turn its safe, but still 81/22 is better for a 13 turn.