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) : 560
Max Power (W) : 4200 Watts
Max Continuous : 100Amps
Max Efficiency : 89%
Io (No load A) : 2.23A @8.4v
Rm (Resistance) : 0.012 Ohms
Shaft Diameter : 6mm
Gear Box : N/A
Motor Diameter : 53.9mm
Motor Length : 68mm
Motor Weight : 487g
Build in Fan : Yes
Max RPM : 24,000
Poles : 10
Case : Outrunner
ESC Timing : 5-15 Degree
ESC Switching Freq. : 8khz
Max Lipo Cell : 12s
Peak Curret : 120A 5 second