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Old 06-13-2014, 05:39 PM
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Join Date: Apr 2008
Location: Wisconsin, USA
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Originally Posted by ron_van_sommeren View Post
Kv_delta = 1.75 Kv_star
Kv_star = Kv_star / 1.75

Double voltage and motor/battery current wants to quadruple (22). An n% increase in voltage will give a 2n% increase in current.
Double Kv and motor/battery current wants to increase by factor 222 = 8! An n% increase in Kv will give a 3n% increase in current.

There are a number of very good computer programs that do all the math for you. The one I like is www.motocalc.com.

Another is Drive Calculator.

Hey, that's an idea for a new thread!
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