Tuesday, January 25, 2011

[Electric Boats] Re: Electric speedboat revisited

 

AK,

Everything Rod said. He's a great contact, although a little wild(e). Ask him about doing wheelies with his golf cart, or his Mazda, or his postal van. If you want it to be fun, he'll point you in the right direction.

The only thing I'd add is to beware of cooling when running slow. A lot of series wound DC motors have internal fans but they don't do much at slower rpms. While I don't think it will be an issue with a boat, you may want to estimate your prop speed during the slow cruises and make sure you motor isn't going too slow. If you are drawing a lot of amps at slow speed because of a large prop, you may need to adjust. If you keep the motor cooled, and don't over-rev it, the motor will last forever. An 11 inch Kosotv is a pretty big motor, it should be lot's of fun.

Dave Cover

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