Re: [electricboats] 10 kwh pod motor DYI #wiki-notice

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BLDC typically.  No reduction gear, direct drive usually, although Pure Watercraft uses a planetary gear reduction, to keep the motor inline with the prop shaft.  Keeping the motor in the pod tends to simplify cooling.

So these would typically use PWM controllers.  One big challenge is getting something 'torquey' enough to keep RPM low but power still high.  Axial flux motors usually work for that, but don't fit well in the pod (too much diameter).  That's when a 90-degree gear reduction can show up, as in ICE outboards.

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