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Old 03-01-2016, 09:15 PM   #3 (permalink)
Bladefx
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Join Date: Apr 2011
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figure out the HS you want
you should know what cell count you want 3S = 11.1v, 4S = 14.8v or 6S = 22.2v
nominal cell voltage is 3.7v per cell


kv = HS x gear ratio / volts
? = 3000 x 11.3 = 33,900 motor rpm divide by pack voltage 22.2 = 1527 kv

HS = kv X V / gear ratio
?= 1800 kv x 22.2v = 39,960 divide 11.3
<3,536>
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