This is a brushless motor that is suitable for a 90-class radio control helicopter. It is more powerful than any other motors for the same class due to its unique heat radiation structure. It is a highly efficient F3C motor that is widely recognized and used by many F3C pilots. «Technical Specs» Kv (rpm/v) : 440 Max Power (W) : 3150 Watts Max Continuous : 75Amps Max Efficiency : 89% Io (No load A) : 0.91A @10v Rm (Resistance) : 0.036 Ohms Shaft Diameter : 6mm Gear Box : N/A Motor Diameter : 53.9mm Motor Length : 68mm Motor Weight : 470g Build in Fan : Yes Max RPM : 24,000 Poles : 8 Case : Outrunner ESC Timing : 5-15 Degree ESC Switching Freq. : 8khz Max Lipo Cell : 12s Peak Curret : 100A 5 Second
