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09.18.2009, 01:48 PM
Why not just gear down a little? Are you just looking for lower speed, or is the 1515 a little too torquey for you?
Other than that, either of those would be good choices, although I personally would opt for something with a little bit higher kv, like between 1900-2000. 1700kv on 4s is only around 25k rpm, which is fine I guess, I just prefer between 30-40k rpm on the better motors.
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