I don't know if our CIMs will heat under a load yet. I am anticipating that they might.
What I am hearing from replys to this and another post is that adding a cooling fan outside the case of a motor is of no consequence. Cooling by an external fan does nothing to prevent damage inside.
http://www.chiefdelphi.com/forums/sh...ad.php?t=33313
I can't say if we have our transmission geared correctly in the power curve but am trusting the FIRST volunteers who designed the kit transmission. We are using the unmodified stock kit componants with the 8" x 1" wheelchair casters in a four wheel drive configuration.
I still consider it prudent to add some air movement to aid in the radiant cooling of the motor cases. I will not consider it a top priority in the design and just find a location to intall a fan to get some air moving in the vicinity of the motors.
Thanks,
APS