heh
Problem with weight of the housing, the motor is encloded, much like all pumps. I suppose I could bolt on some fairly heavy pieces of steel to it. Sounds like agreat idea acctually, Ill give it a think.
Cant fiddle with the circuit
its inside the motors housing. Also adding a capacitor to PWM doesnt work, as the capacitor would just draw more current when the pulse is on, resutling in enough to keep the fan running asif there was no PWM. Maybe it would work if the cap was very small, infact that would probably be perfect, but as I cantfiddle with it