"NE Sailboat" wrote in
news:H_yLh.7193$zx.128@trndny05:

Larry,, you sound like a "wind power" guy.

The problem with wind power is size, noise, vibration.

I'm certainly no expert; but doesn't it take a large blade to produce
any amount of power? And that large blade is spinning
and that means noise, and vibration.



Lots of boats have wind power like the AirX unit I pointed you to the
webpage of. They usually sit aft on a stick, but very few try to
vibration isolate the stick from the hull, which I think can be easily
done both at the top and the bottom.

These marine genny's, unlike their shoreside brothers, have quite small
blades, turn quite fast as wind power goes, and don't generate much noise
at all....unless you're in a boat whos wind genny has bad bearings, of
course.

They're nicely balanced to minimize vibration and product returns by
irate boaters!

Of course, some day when this sailing "tradition" means less, we'll
probably be making a POWER boat out of some super genny like these guys
build in their mountainside shops:
http://www.otherpower.com/
I'd like to see one of these high-powered, 3-phase, PM rotored beasts
mounted to the aft handrail of a sailboat, trailing a ball-joint-mounted
shaft behind a cruising boat offshore with a properly-pitched screw
driving it, not some sailboat prop being pulled along the wrong way like
our shaft alternator on Lionheart.

These alternators are VERY slow RPM on a large wooden blade. No
expensive gearing, no exotic electronics/field coils/etc. I'd want the
marine dragging unit to have a variable space between the coils making
the load and the magnets turning against them so YOU could vary the shaft
loading for maximum efficiency.

What would you do with a kilowatt of constant electricity, day or night,
dragging its prop through the water? HOT SHOWERS FOR EVERYONE!

Larry
--
Message for Comcrap Internet Customers:
http://tinyurl.com/3ayl9c
Unlimited Service my ass.....(d^