> 2. If I end up using it in a windmill, I'd like to run it at low
    > speeds (couple hundred rpm) and charge a 12V battery.  Is there an
    > easy way to get higher V/rpm?

    Not without rewinding it.

Hmm.  There's a fair amount of "mechanical magic" to the construction of
a modern motor.  If you have something like an induction motor (no
magnets, lots of coils), how efficient a generator can you get if you
rip apart the rotating part and attach some strong magnets to it?  Then
you possibly rewire the outer windings, and...

I guess a related problem is how to rewire a brushless DC motor (ie a
fan) to be a generator.  It's GOT the appropriate magnets and coils,
they're just not wired the way they need to be to get electicity OUT...

BillW

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