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Originally Posted by maxxdude1234
The current that either motor draws will depend on the load put on the motor. For a given load the L motor will pull more current than the XL, because it has a lower torque constant (kt rating). At a given rpm, the L motor will need require a lower voltage to achieve that rpm than the XL will need.
The point I was initially trying to make (all those posts back) is that at a given speed both motors will give out the same power. The XL will be more torquey, and the L more revvy. The XL might be a tiny bit more efficient, and hence draw less power from the batteries
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Well, I cannot say so because motor output (Motor Output = Total power * Efficiency) won't be the same across entire RPM range. And both motors will have similar (not the same though) current-torque curves with load or without (as long as it would be inside motor powerband, based on size). But with the same voltage one motor can be at pick efficiency while another not.
Artur