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The Fisher Price (Mabuchi actually) motors are more likely to get toasted mainly because it is less efficient at getting rid of its heat than the Drill motor (made by Johnson, just to add confusion).
The cooling fan on the Fisher Price is less effecient and the way that scaling works, for the size of motor that the FP is, it would have to have much less power to stay the same size (By the way, I expect that the Chiaphua's will stay much cooler than the drills for similar reasons).
Bottom line: We have used both drills and Fisher Price motors on our drive systems of a number of years. I can count the drill motors we have smoked in one hand with fingers to spare. I may have to take off my shoes to count the number of Fisher Price motors we have gone through.
JOe J.
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