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Originally Posted by sanddrag
Cooling the motor too fast is bad for the magnets and can crack the brushes rendering it useless. A light bit of spray on the outside is okay but I never get them too cold.
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We have used the cool in a can stuff for years, freezing the snot out of the motors. While I am sure that it is not particularly good for the motors, we have not had a failure that we trace to this practice in 8 years of competitions.
Joe J.