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Old May 15, 2012, 08:41 AM
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United States, CA, San Diego
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Quote:
Originally Posted by arcticflyer View Post

Went to the plane and picked it up and immediately noticed that caramel smell I ran to get my temp guage and found that the motor temp was 285F Got it cooled down but I can tell you this motor is GARBAGE for this application and will never make it to 7 or 8S This motor is supposed to produce 4100 watts and take 120amps with 12S. During my runs the AMPS never went over 140 at WOT.
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Try using ecalc(http://www.ecalc.ch/motorcalc_e.htm?neumotors) next time! If you plug in the motor constants you will find that that motor will get very hot when run like you were doing. As for cooling your plane would be considered medium to poor in comparison to a EDF with the motor in contact with a 200mph tunnel of air. This is a case of not picking the right motor rather than a "garbage motor"

For your application you need find a motor with lower resistance. Something in the 0.01 to 0.012 ohm range would give you some chance of success.

Steve Neu
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