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Old 24-03-2013, 00:11   #136
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Join Date: Apr 2011
Location: Sacramento, California
Boat: Solar 40ft Cat :)
Posts: 1,557
Re: Tried climbing in your dinghy from the water?

Originally Posted by deckofficer View Post
Considering a good MARS DC PM motor, 400 amp controller, custom motor cradle/mount, shaft couplers, cable and throttle pot can be bought at the local DIY Internet EV site for $1700, it does make you wonder about the best deal on all of the above packaged as a turn key system runs $5000. For your cat X 2.
We are off-topic, but I had a Mars BLDC in my jetski, the outboard had a surplus dc hydraulic pump motor, both had a controller I created.
For an outboard you really want to put the motor in the water and the controller too, so it gets water cooled. This requires a motor designed for the application, BLDC and smaller diameter than a normal motor design would dictate. Like a trolling motors scaled up.

Having researched this years before, and again recently, I haven't found anything off-the-shelf that can be used, so I have been looking into building a custom motor(s) for the cat, and thinking maybe I WILL produce a product, not an outboard really, but more of a Azimuthal Thruster with 360 directional control, and most importantly be able to lift out of the water to avoid fouling at anchor. Have not really seen such a product, at least under $10k.


Here is a pic Rolls Royce drive, but the motor would be even longer


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dinghy, water

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