How to Use: 1. Connect the BEC cable to the receiver. 2. Connect the motor wire to the electric regulator. 3. Turn on the transmitter. 4. Connect the battery pack to the ESC, and then open the ESC. 5. When the motor is connected to the battery, the motor will beep. 6. When the throttle lever is in neutral position, the motor will beep again. 7. ESC is feasible. Specification: Item Type: S3650 Brushless Motor Kit Weight: Approx.304g / 10.7oz Motor Material: Aluminum Alloy + Copper Color: Red + Black KV Value: 3900KV Motor Size Diameter: Approx.36mm / 1.4in Length: Approx.50mm / 2.0in (Excluding Shaft Length) Axial Length: Approx.15mm / 0.6in Axle Diameter: Approx.3.175mm / 0.1in Maximum Speed: 60000 Maximum Voltage: 8.4V Maximum Current: 100A Connector: 4.0mm / 0.2in Golden Banana Head Electronic Speed Controller Shell Material: Plastic Color: Black Continuous Current: 60A Peak Current: 320A Applicable Voltage: 7-15V (2-4S LIPO) BEC Output: 6V/5A Program Card Color: Black Material: Plastic Low Voltage Cut Off: 3.7V, 3.6V, 3.5V, 3.4V, 3.3V, 3.2V, 3.1V, 3.0V, 2.9V, 2.8V, 2.7V, 2.6V Starting Mode: Medium, Weak, Strong Maximum Braking Force: 50%, 25%, 75%, 100% (25A, 35A, 45A, 60A) 25%, 50%, 75%, 100% (80A, 120A) Maximum Reverse Force: 25%, 50%, 75%, 100% Neutral Range: 9%, 6%, 12% Working State Application: Suitable For 1/10 RC Car Package List: 1 x Motor 1 x Electronic Speed Controller 1 x Manual 1 x Program Card