Some common sense which you do not know about motor power for handbike/handcycle
The motor power of many motors on the market is a virtual standard, not the actual rated power of the motor, but the maximum power of the target motor. Generally speaking, the maximum power of the motor is 1.5-2 times of the rated power.
To sum up, the pursuit of vehicle power is not only about high motor power, but also comprehensive consideration of the comprehensive configuration of the vehicle.
We often have some wrong perceptions about the in-wheel motor. For example, the power of the in-wheel motor can be made as large as we want; the higher the power of the in-wheel motor, the better, the higher the power, the higher the torque, and the stronger the power; so Many people will spend more money in pursuit of high-power motors. In fact, this is not necessary, and sometimes it will be more than the loss. Below we will give you a brief introduction to the above-mentioned misunderstandings.
1. The power of the hub motor depends on the size of the motor casing.
The factors that affect the power of the in-wheel motor mainly include the following three points
1) The size of the inner magnetic steel sheet
The larger the magnetic steel sheet, the greater the motor power, and the size of the magnetic steel sheet depends on the width of the hub motor housing. Therefore, the wider the housing, the higher the power is relatively.
2) The wire diameter of the enameled wire
The thicker the wire diameter of the enameled wire, the greater the power. The thickness of the enameled wire depends on the size of the winding gap of the stator silicon steel sheet.
3) The diameter of the stator
The larger the stator diameter, the greater the motor power, and the diameter of the stator depends on the diameter of the hub motor housing. Therefore, the larger the housing diameter, the higher the power.
In summary, the maximum power of the motor is directly related to the size of the motor housing. The same motor housing, its rated maximum power is fixed. The motor power of many motors on the market is a virtual standard, not the actual rated power of the motor, but the maximum power of the target motor. Generally speaking, the maximum power of the motor is 1.5-2 times of the rated power.
2. There are many factors affecting the power of the vehicle, not only the power of the motor, but the main factors are as follows.
1) The type of hub motor. In-wheel motors are divided into gearless motors and geared motors. The geared motor of the same power is much larger than the gearless motor. Generally, the geared motor is a high-speed motor, which is decelerated through planetary gear transmission and develops the torque of the motor. Therefore, the on-wheel torque of a 36V350W toothed high-speed motor can reach about 45N.M, which is equivalent to the torque of a 36V600W low-speed motor.
2) The torque of the hub motor is also related to the battery voltage. Generally speaking, the higher the voltage, the greater the motor torque and the better the power.
3) The power of the controller needs to match the power of the motor, which can be slightly higher than the power of the motor.
4) The discharge rate of the battery. When the motor is outputting at low speed and high torque, the battery needs a large current to discharge, especially when the vehicle encounters bad road conditions, it needs a large current to drive the motor so that the motor can output high torque. This requires the battery to have a relatively large discharge rate.
5) In addition, high-power motors consume relatively more power, especially when the battery voltage is relatively small, it needs to work with high current all the time. The cruising range will be shortened.
To sum up, the pursuit of vehicle power is not only about high motor power, but also comprehensive consideration of the comprehensive configuration of the vehicle.
So when we choose a handbike/handcycle, we should choose it according to our actual needs. If the power requirements are not so high and the road is usually flat and paved, it is recommended to choose the 36V250-350W high-speed gear motor configuration. This configuration has enough power, the overall performance is relatively balanced, power saving, and long cruising range. If the power requirements are relatively high, the configuration of high voltage and high power can be selected. Such as 48V800W or higher, depending on the road conditions and specific needs.