[marccenter]

Dear CD,

I was wondering if any teams that have progressed further into their build so far have determined that the elevator CIM motors overheat due to stalling?
I am assuming you are using a gearmotor attached to a CIM with a gear reduction ratio in the order of 50 to perhaps 90:1.

When the CIM elevator motor stops moving to hold a tote at a given height it is effectively stalled (motor speed nearly zero) and maximum current is drawn.

Have you found that your CIM elevator mount overheats in a two minute match? Were you holding one, two, three, or four totes?

Have you found it necessary to add an active braking mechanism to aid in the problem?