MFA Torpedo 500 Electric Motor 6v to 12v Operating Voltage Range 4.5v-12v Nominal Voltage 6v Constant No Load Speed – 7500 RPM Current – 0.45A At Maximum Efficiency Speed – 6180 RPM Current – 2.1A Torque oz-In – 1.64 g-cm – 118.2 Output W – 7.49 EFF – 59.4% Stall Torque Oz-In – 9.31 g-cm – 670.0