The WCICS rules States that no cutting/grinding/milling can be done to the chassis, or else I'd cut a 30mm hole in the top of the chassis and Mount a fan such that it blows air onto the side of the motor.
yeah, too bad as that would be the ideal design
Having a fan hanging from the side, sounds like a recipe for carnage. How about putting a fan on the motor mount? That sounds like a more durable idea.
My fan is w/in the front wheel and battery, i'd have to get t-boned at just the right angle to hit the fan...but at that point the race would be pretty much over anyway. Not really worried about that. What do you mean by putting the fan on the motor mount? The motor mounts inside the chassis... would like to know what your thinking?