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Old Feb 06, 2005, 02:30 PM
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in persuit of low wing loading
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Boston, Mass
Joined May 2001
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If it is efficiency you are after in motors this small then outrunners are probably not the answer. I don't know if this is due to outrunners this small having lower efficiencies, or that motors developed by individuals don't have the resources of, say, Mabuchi. Probably it is due to being more concerned with obtaining power than efficiency.

However, the theoretical max efficiency when the motor is running at max power rpm is 50%. When looking at this figure rather than the max efficiency figure these motors don't look too bad. It's different for duration planes. But, I told Bob Wilder micro outrunners were not the direction I would suggest going for duration planes. These motors are best for taking more amps or more volts than comparably sized micro brushed motors can. And, there is the alure of quiet no-gearbox flight.

Gordon
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Last edited by Gordon Johnson; Feb 07, 2005 at 03:41 PM.
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