RC-Monster Forums - View Single Post - Help Me Choose a 12s Motor for 20+lbs savage

DrKnow65 · 03.29.2011, 09:34 AM

You need to pay close attention to KV vs. Max RPM.

I like my motors to push 45-60k rpm at max voltage, so 12S X 4.2v = 50.4v
50.4v \ 60,000rpm = 1190KV
50.4v \ 45,000rpm = 892KV
I also think bigger is better, but the 17xx series is only good to 45K rpm, so I'd stick with the bigger 15xx's.

So by MY standards, I would go with a 1521-1527 1.5Y Neu motor.
(I also prefer the wye winds VS the delta's because they make more power at higher RPMs versus lower).

	(#2)
DrKnow65 RC-Monster Aluminum Offline Posts: 998 Join Date: Oct 2007 Location: Colorado	03.29.2011, 09:34 AM You need to pay close attention to KV vs. Max RPM. I like my motors to push 45-60k rpm at max voltage, so 12S X 4.2v = 50.4v 50.4v \ 60,000rpm = 1190KV 50.4v \ 45,000rpm = 892KV I also think bigger is better, but the 17xx series is only good to 45K rpm, so I'd stick with the bigger 15xx's. So by MY standards, I would go with a 1521-1527 1.5Y Neu motor. (I also prefer the wye winds VS the delta's because they make more power at higher RPMs versus lower). If I could only draw what I see in my head, then afford to build it, and finaly get to play with it...