I used 6 small mini-pancake fans on a shroud I made from plastic ceiling light trim pieces I found at home Depot. The inside diameter of the hole matched the brush cover of the PMG. I will try to post the pictures so you can view it. I felt pushing the cool(er) air into the unit would be better that pulling is, you have a bit more control. I have found the motor to run cooler. I would start the fan(s) as soon as the bike is turned on so heat cannot build up as easily as turning it on by a thermo switch... if you wait until it is hot the fan will be less effective. Fans generally run on very little current. My DC to DC converter is 200 watts and runs the stock lights, signals, and the six fans no problem.
I have heard from someone here that the squirrel cage blowers move more air, my situation with the location of the fans and motor in the chassis precluded the use of a squirrel fan. I am reminded of the early electric cars from the 70s that used the starter motor/generator from a jet engine, it had a circular coupler that allowed an air source to force air into the motor in one location and an air output at the . If I was to approach the problem I would try to establish the air flow possibilities into the motor and out of the motor and make sure the motor case would not allow the air to escape without traversing the whole motor and pulling the heat out of the rotor. So that may mean sealing some air vents mid motor. Hope this makes sense to you. Cheers, Jeff 84 Honda VF Franken'ceptor On 11/7/07, dale henderson <[EMAIL PROTECTED]> wrote: > > i have attached a word doc for this question [sorry for supporting > microsoft, i can reformat it if need be] > > i want to know what is the best way to cool a motor with forced air. the > main two issues is whether to pull or push and where to pull or push > > > > harry > > Albuquerque, NM > http://geocities.com/hendersonmotorcycles/blog.html > http://www.austinev.org/evalbum/1221 > http://geocities.com/solarcookingman > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > >
