DIY Mountain E-bike Middle Motor Kit with 450W 36V UniteMotor MY1018

I. Middle DC Motor Kit Features

1.The combination of the mid-mounted motor and the mountain bike transmission system results in the perfect cooperation of speed and torque, high torque output, off-road and climbing weapon. The speed of the motor of this product is stepless, adjustable from 0 to the maximum speed in freely;
3 speed tooth plate with flywheel speed change is a multi-speed mechanical transmission, up to 21 speed, 24 speed, 27 speed, 30 speed, the two point combination, under different road conditions can always adjust the appropriate power output and speed matching.Which is the best ideal match of flat Road, hillside, long distance, and off-road.It Compared to the wheel-hub motors, they are more bigger powerful and faster. Compared with ordinary single-speed (single-cranked) mid-mounted motor,more bigger power, more gear shift, and the original vehicle's shifting function also can be retained.

2. Simplified style design, compact size, modification to increase the weight of 3.5KG, the motor select gear reduction, more high reliability.

3. This product is designed with a light clutch ,which used for the mechanical conversion of riding and electric. Compared with the wheel-hub motor, there is no resistance when riding alone, and as light as a regular bicycle. When no use the electricity , the clutch is automatically disengaged and rides like an ordinary mountain bike. When using electric power, the clutch will be closed automatically and the motor will output power.

4. Quiet design, enjoy the joy of riding

5.The 3-speed sprocket design perfectly supports multi-speed (21-speed, 24-speed, 27-speed, and 30-speed) transmissions, bringing many changes in torque and speed, and better adapting to various road conditions.

6. Wide applicability: various bicycles, lying cars, etc., five-way length 68mm, inch thread, the most common five-pass bike specifications.

II. Middle DC Motor kit Parameter
1.450W Middle DC Motor kit, input voltage 36V/48V, current 25A/18A/input, 350W, 250W current will little lower. 
2. Output rated speed 113rpm, continuous torque 38N.m (middle axis) .
3. Increase the weight 3.5KG, the total packaging weight 5.8KG per set.

Brake power off sensor suitable for oil brake / V brake / disc brakes / bending throttle etc need to brake off power situation.