[Knufire]

At 100:1, you are already exceeding the maximum rated load of the Versaplanetary. See the load rating guide here: http://content.vexrobotics.com/vexpr...s-20151221.pdf

Geared this far down, you're looking at some pretty large amounts of torque. I'd definitely prefer to go chain over belt, and might even want to step up to #35 chain.