[EricH]

Originally Posted by asid61

Good to know you have somebody to work with, that makes me feel a bit better.
775pros could work, but because of their smaller mass you may face heating issues if you run this thing for a long time. CIMs are much safer and only cost slightly more (and have more reliable stock).

VEX did some tests on the 775s and published the results. Short version, under some of the test conditions they only got about 9 minutes of continuous operation (I want to say that was the max power test), after which they needed a new motor. EDIT: http://motors.vex.com/775pro--compare to http://motors.vex.com/cim-motor

Fan-cooled motors don't take stalling very well, which is where you run into a lot of the heating issues (drivetrains tend to stall a bit). CIMs... Can't say I've ever seen one of those smoke when used in an FRC-size robot's drivetrain.