RC-Monster Forums - View Single Post

GeeReg · **Motors, RPM, and Efficiency -** 12.15.2005, 01:09 PM

I have a question that I couldn't seem to find an answer to. When people are talking about motor choices and kv values, sometimes you'll hear "That would put you at about 48,000 rpm and that's outside the motor's efficiency range, so it will heat up" or something to that effect. My question is, where do these numbers/ranges come from? How do people know where a motor is efficient?

	(#1)
GeeReg RC-Monster Carbon Fiber Offline Posts: 139 Join Date: Oct 2005 Location: NJ	Motors, RPM, and Efficiency - 12.15.2005, 01:09 PM I have a question that I couldn't seem to find an answer to. When people are talking about motor choices and kv values, sometimes you'll hear "That would put you at about 48,000 rpm and that's outside the motor's efficiency range, so it will heat up" or something to that effect. My question is, where do these numbers/ranges come from? How do people know where a motor is efficient?