Thread: Does motor temp affect performance?
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Unread 06-04-2010, 12:52
EricVanWyk EricVanWyk is offline
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Re: Does motor temp affect performance?
One effect of heat is that the resistance of the motor will increase, which will decrease the amount of current (torque).

Increasing the winding resistance by 100 C increases resistance by 40%, so a super liberal estimate is that you could lose 30% of your torque. However, this doesn't factor in A) any other resistances in the path or B) that a 100C rise is really really hot.

I'm betting that they got hot -> increased resistance -> decreased efficiency -> got hotter, but the real cause for your drop in power was your battery giving up. Running that hot is not good, but it probably isn't your only issue.