FMS 50/64mm 11-blade 3S/4S EDF Power System PRO & 2840 3150KV/2627 4500KV Motor 50MM EDF With 3S MOTOR 2627-5400KV 50MM EDF With 4S MOTOR 2627-4500KV 64MM EDF PRO With 3S MOTOR 2840-3900KV 64MM EDF PRO With 4S MOTOR 2840-3150KV NOTE: 1.To purchase the ducted 4S version, please use 40A ESC 2. In order to ensure the efficiency of the ducted power system, the gap between the inner wall of the duct and the top of the fan blade is only 0.5mm. During the production test, the tester need to hold the duct driving force in the debugging operation. When debugging the power, because .
