The electric motor power of the front-drive electric bicycle is small, and the battery capacity is not large, so it is not suitable for long-distance and continuous driving for a long time. It is more suitable for daily short-distance travel assistance. The battery of the rear-drive electric bicycle is large enough, the motor power is sufficient, the power is very good, and the speed is also very high. It’s not a problem to run far when the battery is fully charged. The reason why this kind of electric bicycle is more popular is that it is more in line with the actual use situation. Carrying people, carrying goods, running long distances, bad roads, climbing hills, all these are all right.
To adapt to the relatively harsh conditions of use, rear-wheel drive is the only option. There are mainly the following factors:
1.The bearing capacity of front shock absorption
In front-wheel drive, the power can only be transmitted to the body through the two shock absorbers. The drive arm is very long, causing a lot of shear on the shock. Then your shocks need to be strong enough and durable enough to function properly. The rear wheel is directly connected to the frame, and is stressed by the frame when driving.
2.Driving efficiency
Whether it is an electric bicycle or a motorcycle, the center of gravity of the vehicle moves backward when accelerating, and the rear wheel has a greater adhesion at this time. Whether it is an electric bicycle or a motorcycle, the center of gravity of the vehicle moves backward when accelerating, and the rear wheel has a greater adhesion at this time. When the motor power is large, the rear drive is less likely to slip, so the driving efficiency is higher. I once rode a front wheel drive e-bike, it was an old scooter trike. When turning on the concrete road, you can obviously feel the front wheel slip slightly, and the driving force is wasted.
3.The front-wheel drive force direction changes frequently and is not as stable as the rear wheels.
The front wheels are responsible for turning, and if front-wheel drive is used, the direction of the driving force will change when you turn. The rear wheel drive force will always be consistent with the body and more stable.
4.Better rear wheel adhesion
When two electric bicycles meet, the body will inevitably roll, and the front wheel will deflect to a certain angle when turning. So when turning, the rear wheel has a larger landing area and has a greater adhesion to the ground. It is easy to encounter this situation when an electric bicycle is running, and the attachment state of the front wheel is not as good as that of the rear wheel at this time.
The last point is that the front-drive energy consumption is low relative to the car.
Because most car engines and gearboxes are located at the front of the car, the use of front-drive structures generally does not require too complicated a transmission system. The gearbox directly outputs two transmission half shafts to transmit the power to the driving wheels. Obviously, the rear-drive structure is more complicated, and the system has more moving parts, which will increase the running resistance, resulting in higher fuel consumption. The wheel of an electric bicycle is an electric motor itself, and no matter whether it is installed in the front or the rear, it will not increase the resistance of the transmission system.
Because most of the motors of our electric bicycles are relatively powerful. Moreover, the frequency of daily use is high and the use conditions are relatively harsh, so the rear-wheel drive is definitely the best choice.