Hub Motor Selection Guide

Structure of the Hub Motor

Hub motors have three main parts: rotor, stator, and leads. In a hub motor, the magnet, hub, and tire are the rotating parts and are called the rotor. The stator includes bearings, stator coils, etc. The leads mainly include power and hall wires, which supply power to the motor, and the hall wires send and receive signals and are connected to the controller.

Factors should be considered

There are a variety of factors to consider when choosing the right hub motor. Hub motors are often used on electric scooters and electric bicycles, but they are different for each of these two applications.

• Power: input power and output power, input power is derived by multiplying the voltage and current of the motor charged, and output power refers to the actual power output of the motor.
• Rotation speed: Rotation speed refers to the speed of motor rotation, usually expressed by how many revolutions per minute. If you want to convert kilometers per hour, you need to multiply the circumference of the tire. Usually, we will directly calculate the hourly speed of the motor for customers to choose from.
• Torque: Torque is externally manifested by whether or not the motor has force, in the case of other factors that remain unchanged, the torque is inversely proportional to the rotational speed, both low rotational speed and high torque, high rotational speed and low torque Hub motors can generally be loaded up to 80–120 kg per motor, and the toothed motors talked about in this video can be loaded up to 150kg per motor. Some hub motors can have a load of 300–600 kg per motor.
• Voltage and current: voltage is used to match the battery, current = power/voltage.
• Size: Different applications require different motor sizes to be considered, you should choose the right size of hub motor for your use based on the size of your frame.

Accessories

Hub motors are usually used in conjunction with other kits, so when choosing a hub motor, you should also consider whether the motor matches the kit. Usually, the controller of the hub motor needs to match the power of the motor, and some of the turnbuckles also need to match the voltage. In addition to voltage matching, the LCD also needs to confirm whether the communication protocol with the controller is the same. In order to avoid possible subsequent problems, it is best to buy matching. Lunyee provides a complete range of hub accessories, which can help you avoid the problem of matching the accessories with the motor.