Re: [Electric Boats] Re: Any experience or ideas for newbie electric conversion on Newport 16 sailboat?

The moderator of this group mounted an electric motor on a gutted gas
outboard, though his setup is much more powerful than you'll need on a
Neptune 16. Another one of our local boating group has installed a Golden
Motor on an outboard carcass. One thing you've gotta think about is that
an electric motor has a lot more torque at low speeds than a gas engine.
This can result in sheered propeller sheer pins, or in the case of the
latter Coot a sheered woodruff key in the coupling between the motor and
the outboard shaft. This is most likely to occur when shifting from
forward to reverse, or vise-versa, especially if you don't pause to let
the propeller stop turning. Are there controllers that give a "soft
start?" You should also use a donor outboard of greater horsepower than
your electric motor, to get stouter gears to handle the torque. I'd guess
that a 1/2 to 1 hp. electric motor would be plenty powerful enough for a
little sailboat like the Neptune.

http://sailboatdata.com/viewrecord.asp?class_id=3288

On Thu, 17 Nov 2016 07:15:37 -0800, king_of_neworleans wrote:

> Some very nice electric outboards have been built with old gasoline
> outboard carcasses. There is no axial thrust on the motor so no bearing
> issues, just coupling and mounting or stabilizing concerns. Oh, and the
> water pump is no longer needed... Just extra resistance, so toss the
> impellor.
> ...

--
John (jkohnen@boat-links.com)
Like all weak men he laid an exaggerated stress on not changing one's
mind. (W. Somerset Maugham)


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