Thanks Stereo5. My mistake. The upgrade is to the 300 rpm motor.
I find the upgrade motor quieter and the speed steadier. The pulley is also larger, which, at least for me, made the belt stayed in place better. If I were going to replace anything, I would stat with the 300 rpm motor.
I find the upgrade motor quieter and the speed steadier. The pulley is also larger, which, at least for me, made the belt stayed in place better. If I were going to replace anything, I would stat with the 300 rpm motor.