> The electric motor can develop maximum torque at all rpms. Electric motors
> have a current to torque constant, and a voltage to rpm constant.
Electric motors do not develop maximum torque at all RPMs - if that were true, acceleration would also be maximum at all RPMs, and we all know that's absolutely incorrect just from observation and experience. The torque curve for electric motors is an inverse exponential function, with maximum torque at zero RPMs, and decreasing torque as RPMs increase. Gear/belt reduction is used to "stretch" the curve to the right along the X (RPMs) axis so that more torque is available at higher prop RPMs.
If this isn't recognized, then there's no hope of understanding why there's such a variance in performance between electric and ICE drives at various RPMs.
All the Best,
Jim
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