Quote:
Originally Posted by Jon Stratis
Realistically, that 1600W comes from running it at higher current/voltages. That motor is supposedly rated to 22.2V, according to the website. But even at that voltage, 60A only provides 1332W of input power!
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Your numbers significantly overestimate the power this motor/controller combination would provide you.
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Very true, and good catch. I just took their numbers without checking their math first. My bad.
Let's take a look another similar motor listed: XK3674-1650KV Brushless Inrunner.
Specs.
# of poles: 2
Max Amps: 66A
Max Volt: 14.8V
Max Watts: 975W
Rpm/V: 1650kv
Running the math, the quoted max power actually equals the max current x max voltage. Derating to the 12 V on a FIRST robot (nominally) gives 792 Watts.
This one costs $31.86, so we get 1,584 Watts of power for $90.12 total.