I see what you're saying about running a 'hot' motor then throttling it back, but in practice this isn't the best idea. Better to get a less hairy motor and let it run un-restricted, I belive this would be more efficient and smoother, etc although couldn't back that up with any theory.
Have you got much RC car track experience? If you haven't, best bet is to get yourself stuck in without getting too bogged down in the technical details. The kit counts of course, but the thumbs are where it's at
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