High Torque Gearboxes

[Aren_Hill]

Originally Posted by llamadon

VexPro advertises the use of two 10:1 reduction stages to achieve the 100:1 reduction. Are the gearboxes actually useable at this reduction? What are some experiences with them breaking?

It is usable at this ratio with certain motors, please refer to the Load Rating Guide for your particular case.

Originally Posted by Ginger Power

It was stupid of me not to provide more background info. The motor/gearbox combination if not for an FRC application. It's for a NASA Robotic Mining Competiton robot that my club is building. We were hoping to avoid chains/belts by direct driving our 24" wheels... hence why we need so much torque. The more I think about it, the more sense it makes to just give up on trying to direct drive the wheels. The reasoning behind trying to use cim motors and FRC components is because that's what we're familiar with, and we intend to use the FRC control system on our robot.

If anybody has experience with non-FRC motors that may work for this application I'd love to hear it.

Edit: Hex shaft is not a requirement, just easier to work with imo.

4 CIMs is overkill for every robot I've seen at that competition, the 2013 ISU bot was 2 Mini-CIMs, one per side.
Good luck, it's a fun competition (I was with the Iowa State team 2012 and 2013)

-Aren