R/C Tech Forums - View Single Post - kv rating on brushless motors?
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Old 01-15-2010, 02:32 PM
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robrc12
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Join Date: Sep 2009
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Originally Posted by Southern_Rebel
am i understand the kv rating on brushless motors? it seems that the lower the kv the more suited for racing it is. so lower kv = faster motor or vise versa?

i'm new to brushless so this would be useful knowledge in picking a motor
Your right about the lower the kv generely = more rmp from the motor ...
Or do it this way to get a rough idea multiply thr kv by how many volts your battery is

eg - 2s lipo (7.4v) and a 8.5 turn 5000kv motor

7.4 x 5000 = 37000 rpm roughly

so if you use a 3s lipo its 55500rpm and that very very fast so yo can mix and match batterys and motors and gear ratios to tour needs ....

Wat are you runnig ? off road on road ?
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