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02.24.2007, 08:17 AM

Where did the smoke cam from? the larger Ubecs Mike carries tend to give some smoke from time to time.

Any melted heatshrink on the controller or ubec?

A hot motor; you might want to check on the connection from the controller to the motor. The cogging/heat might be the result of 1 poor connection. I had issues like you are describing, and the problem was that 1 of the 3 magnets on the XL motor turned around.. Giving the motor poor power, cogging (distortion of the EMF feedback) and a lot of heat.
   
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