Size Specs: Please refer to the pictures. The 48v 1000w motor : 4800rpm rated current: 18-35ah, max discharging time : 140mins High speed: 33kmh Medium speed: 26kmh Low speed: 16kmh (under the load of 90kg, and the weight of the bike is 70kg). Gear Ratio: 9.5:1 Torque: 2.62Nm. Packages includes 2x rear axle + 1x 48v 1000w brushless motor +1x speed controller +1x brake caliper + 2x 145/70-6 wheels tires.For the instruction video, please check this link. What are the advantages of differential? Allows wheels on the same axle to rotate at different speeds. When your vehicle goes around a corner the wheel on the outside has to travel faster than the wheel on the inside.
The differential allows this to happen. Two wheel drive vehicles have one axle and four wheel drive vehicles have two.