Back driving a CIM

[Nyle]

I think he's asking how much torque it takes to spin a CIM that is not receiving any voltage, which would not be the stall torque. I don't see this anywhere on the datasheet for the CIM, although it might be possible to calculate it from data in there. Unless someone on here has already measured it and has the value available, you'll probably have to just measure it yourself. I'm not sure if connecting it to a speed controller would change the value or not, I believe that would depend on if/how the motor leads are electrically connected when the controller is set to zero. I'd guess that they are not, but I don't know exactly how they work. What do you need this for? For most cases I can think of where you might need it, approximating it as zero would probably not make any significant difference.