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BrianG · 06.11.2008, 09:16 PM

I dunno.

I kinda work backwards. First, I estimate the motor series (1515, 1521, etc) I'll need based on vehicle size/weight. Then, work backwards with my desired speed and gearing to calculate the motor rpm I'll need. Then, the kv is determined by the motor rpm and voltage I plan to use. This is the method my calc program uses for the motor estimator.

If I know I'm looking for an unusual application, like super high speed where tall gearing is necessary, I'll go up on the motor series to give extra torque to compensate.

	(#21)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	06.11.2008, 09:16 PM I dunno. I kinda work backwards. First, I estimate the motor series (1515, 1521, etc) I'll need based on vehicle size/weight. Then, work backwards with my desired speed and gearing to calculate the motor rpm I'll need. Then, the kv is determined by the motor rpm and voltage I plan to use. This is the method my calc program uses for the motor estimator. If I know I'm looking for an unusual application, like super high speed where tall gearing is necessary, I'll go up on the motor series to give extra torque to compensate.