kenneth d lewis wrote:

> As a matter of fact this was tried several years ago. I believe it was in
> a Formula 1 prototype vehicle. Engine coolant was routed inside all four
> rotors. Oddly enough they discovered the size of the radiator could be
> _REDUCED_!! The rotating rotors effectively removed more heat than they
> induced. I guess because the brakes were off more than they were on.
>          I only heard about it that one time, I thought for sure it would
> become popular.

On a Formula 1 car, I would guess this adds up more weight than the larger
radiator, so the gain in cooling would be lost in added weight. They operate
with extremely small margins in that sport.

PerL
87 Syncro 112i