Hub motors are not all that high RPM if you are looking at lets say a motor made for a 24" bike. Consider the fact that the field is larger dia. making for higher torque, that combined with a possible large pole count make an ideal low RPM motor.
Find a way to make a plastic cooling jacket on these motors and run antifreeze or oil for coolant and you can run them at higher voltage than designed and get more power from them.
I have been thinking about this as a choice, hope you do something with it.
Kevin Pemberton
On 05/17/2010 01:39 AM, roger.dann wrote:
sorry guys if discussed (search of hub motors=0) but being in China and seeing low price of bike hub motors here begs the question: isn't there a use in our marine world? I assume overheating and too high rpms are the drawback but what else? Ebikes with hub motors and Lithium Ion batteries are getting cheaper.
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