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Old 03-20-2009, 11:55 AM
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pilotj
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Default Electric boat prop sizing
Can anyone point me in the right direction to size a prop for an electric boat?

I want to size a prop for a Speed Gem 9TD Cryptonite motor (I figure it puts out about 150-200 watts).
I need high torque, low speed for the boat to pull a payload at only 2-3MPH.

Can anyone suggest what size prop I should begin with or how to analyze this requirement?

Thanks
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