Jeff is correct, but the greater torque is only during startup. Once the motor is running, the torque is the same as any other electric motor of equal HP rating and equal operational RPM (like 3450 RPM).
Originally Posted by Jeff Horton
HP is torque times angular velocity. So for two motors of equal rated speed and HP, the torque will be equal. Engineers have been able to calculate and measure HP and torque for a lot of years - and older motors were not built to generate higher than nameplate HP.
But RI motors do provide greater startup torque. Unfortunately, it's not of much use because we start our woodworking equipment without any significant load. That's the primary reason almost all single phase motors on woodworking equipment today is capacitor start.
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