I was once a millwright so the bearings and coupelings and mounting plate are easy. I was hopeing some one knew of a efficent motor of about 2-2.5 HP that was cheap to set up. Why do the over kill with the Etec or Mars? If I was doing a 25 HP conversion I would go that rout. This would be for use on a dingy and a Lightning Class sail boat.
Jon
--- In electricboats@
>
> I would recommend either an Etek (brushed) or Mars (brushless version of the Etek). Both are PMDC motors, with relatively high power to weight ratios. Since they are PMDC, they are more efficient then their (larger, heavier) cousins like an Advanced DC motor with field windings.
> Both motors are manufactured by Mars Electric, who bought the design from Briggs & Stratten when they ceased production of the Etek.
>
> http://www.marselec
>
> The how? The simplest way is how Jim did it here:
>
> http://www.psnw.
>
> Two aluminum plates gave offset above the top of the outboard lower unit, providing room for a spider coupling ("Love-Joy coupling") to mate the spline on the outboard to the shaft of the motor.
>
> The brushed DC could use a variety of inexpensive golf-cart style controllers. The brushless is more expensive, since it requires a special controller that can take DC and produce a smooth multi-phase AC output to the motor. Mars sells a version for $350. You can buy a SEVCON PMAC brushless controller for $450.
>
> --- In electricboats@
> >
> > Still looking for some ideas on electric motor system.
> >
> > Jon
> >
> > --- In electricboats@
> > >
> > > I have a 4.5 HP Merc. what would be a good electric moter to replace the power head with. The how is easy the what is the question.
> > >
> > > Jon
> > >
> >
>
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