I was able to get a Star Sizer to operate fully while being attached to an electric AC motor; however, the muscle wasn't great enough to depress the 45 boolits through the die. Seeing the circular rotation of the rotor translate into full up down travel of the punch and feeder was rewarding, until I realized that none of it mattered if boolits weren't being lubed and sized
Of course, surface area and alloy hardness affects the force. I was trying to size pistol 452s. Based on the way things felt, I'd guess that 32 cal pistol would have dropped but can't say as I didn't have 32 cast boolits for that die. I also had made sure the heater was on for a bit(normal temp) and added a little lubricant to the boolit. forgot to mention, torque for motor was rated at 120in/lb for 115v. When the motor stopped, I had thought I probably needed double the torque. But that's really an uneducated guess and the reason for the post.