[James Juncker]

From what Ive been reading about the raw box gearbox is that while it is possible to backdrive people were able to load upwards of 6 totes last year with one gearbox before it ended up backdriving. This year unless you plan on lifting about 100 lbs with the gearbox I would say you should be fine. and if you do find yourself trying to lift that much weight I would consider adding in gas springs to offset the amount of weight on an arm.

If you REALLY need something that doesn't backdrive I would recommend not using snow blower motors, as last year our team found that after a match or two with load on them (weight not electrical) the motors gave out and started to backdrive. they still worked but they didn't stay in place during our matches. you could also design a mechanical mechanism to not backdrive instead of relying on expensive CoTS items.