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Not sure what youre saying there. longer acceleration? If you want a larger acceleration you will need to use an ESC rated for higher current and voltage, motors to go along with it and batteries that can supply it.As for the teeth wearing out; use aluminum and make sure all the fittings are correct
yea it looks good, im actually designing an ESC myself. I should be finished in a few months and ill put up a quick tut
Make Your Own Miniature Electric Hub Motor