Quote:
Originally Posted by aldaeron
Basically you get two gear reduction pairs of any two hex bore 20 DP gears that add to 84 teeth. The largest reduction is 66:18 (3.67).
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If you are going from a CIM, you can have a 12/72 reduction, or even an 11/72 reduction using vexpro's 11 tooth pinion gear (
link).