Brushless Motor/Setup
11-09-2012, 02:40 AM
#1
Brushless Motor/Setup
Hi Guys!
I am doing a brushless conversion and just trying to pick a motor and esc setup. I'm trying to work out RPM's so I can get some decent power. Is it true to work out RPM's you multiply the motor kv by the battery voltage, example 4000kv x 22.2v(6s) = 88800 RPM's?
Help greatly appreciated.
I am doing a brushless conversion and just trying to pick a motor and esc setup. I'm trying to work out RPM's so I can get some decent power. Is it true to work out RPM's you multiply the motor kv by the battery voltage, example 4000kv x 22.2v(6s) = 88800 RPM's?
Help greatly appreciated.
11-09-2012, 03:55 AM
#2
Yep.
Sweetspot is around 30k rpms.
Sweetspot is around 30k rpms.
11-09-2012, 05:56 AM
#3
The math is right, but the larger you go motor wise the lower RPM it tends to work at. Pretty sure it has to do with the weight of the rotating mass in there and what kind of force it would take to turn the rotor into a grenade in there.
88K RPM is very high for something that would be driving around with a 6S lipo in it...
88K RPM is very high for something that would be driving around with a 6S lipo in it...
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