You can't use that type of alternator. My wind generator spins at maybe
360 RPM (6 RPS) and generates 20A. I think Larry in Charlston is
successfully running a propshaft alternator but I don;t know the details.
I suspect he will add his two cents.

Doug
s/v Callista

"Lew Hodgett" wrote in message
ink.net...
Subject

You can't get there from here.
To get any decent output, you need at least 2,000 alternator RPM.

If you chose to use a belt reduction, 7:1 is about max.

Need 300 RPM on the prop shaft delevering at least 2-3 HP.

That will slow you down at lest 2-3 knots if you could do it.

Trust me, it's never going to happen.

Lew