Type: On Road IFMAR Spec: YES MOTOR Building Fan: YES DESIGN: Sensored SIZE: 540 TURN: 23T Resistance (Ri) Milli-ohms: 23 Input voltage (cell)2: 4-6cell Watts: 165 KV3(Rpm/Volt): 4000 Shaft Diam (MM): 3.17mm Rotor Performs (ROM/temp): STD/STD Hand Wound: YES Thermal Protection: YES