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08.05.2009, 05:00 PM
Personally, I think used motors are more risky than used ESCs. A used ESC might have been pushed or thermaled a few times (which will shorten its lifespan) but if it works, it works. A used motor can be partially demagged and you can't tell if any heat issues you have are due to the gearing, or a partially bad motor.
Ideally, new is the way to go. Or at least go for the Castle refurb deal. Can't beat that IMO, and still get a warranty. Try getting a 1 year warranty on something used...
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