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Ok I have a venom p1 and I'm doing away with the outrunner and fitting a regular motor mount. I'm limited on props because of the hardware so a 42mm is prob this biggest I can run. I'm thinking of a 4074 2000kv or a 3674 2200kv, I know I will get more rpm from the 2200kv but which will give me the most top end on an x640/x642?