All the lower cost drives are based on chips that can handle only 30-40 volts. With such a low value, with most 200+ in-oz motors, the torq drops off very rapidly as the speed increases.Originally Posted by jeffs555
A look at the torques on the automation direct steppers clearly show that 32v is not enough to realize the full potential of the motors. The big 434 in-oz one barely edged out the 166 in-oz one when it came to output power.
I expect that if the inductance was increased, the problem would be even worse.