05-30-2005, 10:48 AM
When I raced electric cars 10 years ago I made a custom aluminum motor heatsink/cooler that wrapped around the motor. It had a 3/4" x 3/4" x 1 1/8" box with a hinge that I packed with dry ice to cool the motor. It worked amazingly well and the dry ice simply evaporated leaving no mess at all. I'm totally surprised no one has mass produced it. Hmmm......