Do You Think We Would Stall?

[Mark Sheridan]

Originally Posted by MICHAELABICK

I would bet that your low gear was traction limited, so you could have geared higher without losing pushing force.

I think their gearing is fine. Assuming a traction coefficient of 1.3 the current draw would just under 120 amps total with their gearing. This would give them plenty of safety factor just in case they ended up on the heavy side and having current drawn from another mechanism. I think for teams that are trying shifters for the first time, its better to start on the slow side. Having a extra traction limited low gear will give them one less thing to worry about.

I would recommend using the 22 tooth sprockets at least with that much torque if you want to try #25 chain.

This is very close to 987's gearing according the behind the bumper video from FRCtop25.