A fan is a good idea, but a radiator fan may pull too much of a current draw. If I remember right, most fans pull in the 8-10 amps range. If you have an inductive amp meter, you could check this out. I have an 125 M atc manual and it states that the alternator max output is 10.8 amps. I would imagine that the 200 would be some where in that ball park. It may be counter productive to have your alternator running at max all the time, since it will put a drag on the engine to create that current flow.
Have you ever seen a Marine Bilge blower? They generally come in 3 or 4" diameters and they move quite a bit of air, but only pull about 2-4 amps. They would be easy to mount and you wouldn't have a exposed fan to worry about.
Just some things to think about
David
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2005 Hammerhead 150
170cc BBK, PnP Big valve Head, A12 Cam, Uni Filter, Custom Exhaust, 10G rollers, 1500 Contra Spring, 2000 Clutch Springs
Just added - 2007 Joyner 250 SV - Let the fun begin
4-Dirt Bikes, Baja Bug and enough toys to keep me in the garage and out of trouble.
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