Quote:
Originally Posted by Oblarg
Out of curiosity, is it possible to change the gear ratio in the AndyMark 3CIM gearboxes? 8.46:1 is a bit low for three CIMs on a 4'' wheel.
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We purchased VexPro 44t and 20t gears and just the plates for the AndyMark gearboxes, intending to achieve a 7.86:1 ratio if we needed it. We also had the gears from the kit drivetrain, which seem to be identical.
The VexPro gears are thicker than AndyMark's due to the nub on both sides, though since we made our own spacers (churro tube) it wouldn't be difficult to grind down the nub or make longer spacers.
Another question about the 3CIM4U: is the output shaft supposed to be longer than the kitbot's? We recycled the one from the kitbot but since there's now 1/8" of gearbox in between it doesn't fully extend into the outer bearing.