ALZRC Devil 450 Pro RC Helicopter Part 2221-PRO 3800KV Brushless Motor Feature: - Compatible Devil 450 Pro, also compatible with 450 class helicopter. - Featuring superior efficiency, high power output, extreme torque, and low current, low temperature. - Incorporates radial fan in its end bell, creating powerful airflow to dissipate heat. Tweaks to motor design and reduction in weight not only contributes to dramatic power increase, the high efficiency cooling system enables cooler operating temperature during and after flights when compared to motor of previous generation. Specification: - Stator Diameter: 22.0mm - Stator Thickness: 21.0mm - No. of Stator Arms: 9 - Magnet Poles: 6 - Motor Wire: Φ2.0/1.0 x 90mm - Motor KV: 3800KV - No-Load Current(IO/10V): 1.1A - Motor Resistance(RM): 0.039 - Max Continuous Current: 35A - Max Continuous Power: 600W - Max. Peak Current: 60A - Max. Peak Power: 900W - Weight: 91g - Outside Diameter: 28mm - Body Length: 38mm - Shaft Diameter: 3.5mm - Overall Shaft Length: 55.5mm - Max Lipo Cell: 4S - Motor Timing: 15 - Drive Frequency: 8kHz - Plug: 3.5mm Gold-plated Banana Plugs Package Included: 1x 2221-PRO Brushless Motor