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Old May 02, 2005, 03:40 AM
Little John
Adelaide, Australia
Joined Aug 2004
6 Posts
Brushless motors

What does it mean when a motor is rated in Kv ie 2415 , 2815 , 1015 etc also another rating such as 160 watts
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Old May 02, 2005, 04:05 AM
Flap chap
snakeX2's Avatar
Most Southern England, Brighton UK
Joined May 2004
1,934 Posts
I am no expert, but i'm sure Kv means how many revolutions per volt, i.e Kv 1000 means 1000 RPM per volt. Or 10 volts input would get you 10,000 RPM.
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Old May 02, 2005, 04:28 AM
Sussex, UK
RobinBennett's Avatar
Crawley, West Sussex, UK
Joined Jun 2004
7,373 Posts
> also another rating such as 160 watts

watts is just volts multiplied by amps - it's a measure of the maximum power that the motor can produce. In this case 20amps at 8V, or 10amps at 16V, or any other combination.

There's no direct comparison between the power (watts) and Kv - they measure different things. You need lots of different figures to describe a motor, in the same way as you might quote top speed, 0-60 times, fuel economy and various other things to describe a car.
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Old May 02, 2005, 10:03 AM
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Laguna Beach, California
Joined Nov 2004
724 Posts
Little John, I think your name might create confusion with mine!

Actually I just noticed that you joined before me.
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