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What Are the Advantages of Using a Rear Hub Motor?

In recent years, electric bikes have attracted many people back to cycling due to their appeal to a wider and more diverse population. For commuters, e-bikes are ideal because they are more cost-effective and environmentally friendly than driving a car or using public transportation, and don't leave the rider sweating on the way to work like conventional models.

 

What to consider when choosing an electric bike?

 

When choosing an e-bike, you need to consider a variety of factors, including looks, comfort and functionality that meet your individual requirements. Of course, this also includes the type of motor, which you don't usually think about when buying a normal cart. The location and type of best hub motor can have a major impact on your riding experience and can completely change the look and feel of the bike itself.

 

Advantages of using rear hub motors for electric bicycles

 

1. Smooth running and better handling. The rear hub motor runs smoothly and quietly, and the direct power distribution also makes the bike easier to handle, greatly improving rider safety.

 

2. Better weight distribution. Between the rider, the battery, and the motor, e-bikes end up with a heavy load. By opting for a rear hub motor with a centrally located battery, weights are more evenly distributed, making them more balanced and an overall safer ride.

 

3. Better traction. These hub motor motorcyclebikes have much better traction than front wheel drive due to better weight distribution. This is especially important for those looking for an electric mountain bike as they are more likely to go off-road when the ground is less firm and therefore need better grip.

 

4. Rotating the sensor means less effort. As mentioned, a rotation sensor on the rear hub motor means that as long as the pedals are turning, the motor will be on, so the bike will do all the work. Unlike crank-driven models that run on torque sensors, the rear hub motors don't rely on any weight on the pedals to run the motor, making them ideal for more people, including more older riders.

 

5. Less maintenance is required. Since fewer e-bike components are involved when using a rear hub motor, there is no drive wear on the bike chain. This means you can go farther with fewer batteries and require little maintenance.

 

If you need any kinds of 750w shengyi motor, please contact us, as a professional  electric bike hub motor factories, Shengyi motor is willing to offer you high quality. 

What Are the Functions of the Hub Motor?

1. About the drive technology of the in hub electric motor

 

The hub mounted electric motor drive technology is also known as wheel-mounted motor technology. Its biggest feature is the integration of power, transmission and braking devices into the wheel hub, thus greatly simplifying the mechanical parts of electric vehicles.

 

The electric bike wheel drive motor hub system is mainly divided into two structural types according to the rotor type of the motor: inner rotor type and outer rotor type. The outer rotor type uses a low-speed outer rotor motor, the maximum speed of the motor is 1000-1500r/min, and there is no deceleration device, and the wheel speed is the same as the motor; while the inner rotor type uses a high-speed inner rotor motor with a fixed transmission ratio reducer. In order to obtain higher power density, the speed of the motor can be as high as 10000r/min.

 

2. Functions of the hub motor

 

1) Bearing and driving. Bearing and driving is a necessary function of the wheel hub motor. The load bearing is realized by relying on the axle bearing to realize the centering of the rotor and the stator. The wheel rim of the vehicle is connected to the suspension axle housing through the axle bearing instead of the stator and rotor to carry the road shock absorber and load. The driving method is that the outer rotor is directly connected to the rim to achieve the purpose of direct driving.

 

2) Electronic differential speed control. Electronic differential control is also one of the functions of the motorcycle wheel hub motor. The realization method is front-wheel steering, which is completed by an ordinary steering gear; the rear wheel needs slip, which is completed by an electronic differential; the turning radius is determined by the front-wheel steering angle, and the rear wheel slip is determined by the vehicle turning radius and wheelbase. The slip of the rear wheels is calculated from the rotation angle of the front wheel steering gear. The steering machine can also be an electronic steering. Even if the rear wheel cannot strictly differentiate, the inner wheel should change from "active" to "slave", which is achieved by disconnecting the motor or connecting a compensation resistor in series in the loop.

 

3) Braking energy recovery. The function of the wheel hub motor is also the recovery of braking energy. During the braking process of an electric vehicle, the kinetic energy of the vehicle is transferred to the motor through the wheels, thereby driving the motor to rotate. At this time, the motor is working in the power generation state, charging the energy storage device, that is, the battery or super capacitor, and converting the braking energy into electric energy and storing it in the energy storage device to realize energy regeneration. At the same time, the resistance torque generated by the motor acts on the wheels to generate a braking torque, which plays a role in deceleration and braking.

 

4) Cooling of the motor. There are two cooling methods for wheel hub motors, air cooling and water cooling. Air cooling uses a structure conducive to gas circulation to cool the wheel hub motor, such as a built-in cooling fan; water-cooling, a special cooling fluid channel is set up, and the wheel hub motor is cooled by heat exchange with the liquid.

 

• Braking system integration. The function of the wheel hub motor also includes brake system integration. The braking system includes electric braking and friction braking, and the integration of friction braking is generally a disc brake. The rotating element in the friction pair of the disc brake is a metal disc that works on the end face, which is called a brake disc. The friction element clamps the brake disc from both sides to generate braking.

 

If you need any kinds of 750w shengyi motor, please contact us, as a professional  china electric bike hub factory, Shengyi motor is willing to offer you high quality. 

 

What is the Difference Between a Brushless Motor and a Brushed Motor for Motorcycles?

Electric cars are everywhere now, so do you know your electric car? Many electric vehicle users do not know what is the difference between a brushless motor motorcycle and a brushed motor? I don't know which is better, a brushed motor or a brushless motor?

 

1. Conceptual difference between brushless motor and brushless motor for motorcycle

 

The brushed motor has carbon brushes, and as a traditional electric vehicle motor, its main components are carbon brushes, commutators, motor rotors, motor stators, motor shafts, motor end caps, bearings, etc. Its working principle is to use the brush to connect the current of the rotor with the voltage regulating device to play the role of voltage regulation.

 

From the literal meaning, we can infer that a brushless electric motorcycle hub motor does not have carbon brushes. Its working principle is to use the exciter to connect with the pressure regulating device to play the role of pressure regulation.

 

2. The difference between the advantages of motorcycle brushless motor and brushed motor

 

The biggest advantage of the brushed hub motor is that the structure is simple, the cost is lower, and the starting and braking effect is better. At low speed, the brushed motor has excellent torque performance and greater torque. However, its shortcomings are also obvious. The carbon brushes wear out quickly and require frequent maintenance. In addition, compared with the brushless hub motor of the motorcycle, it is louder and less efficient. Finally, it is more affected by the environment, is easily demagnetized, and has a relatively short service life.

 

The advantages of brushless motors for motorcycles are many, including strong anti-interference ability, low running sound, and high efficiency. In addition, the brushless motor has a longer service life and requires little maintenance.

 

3. The difference between the application of brushless motor and brushed motor of motorcycle

 

In addition, in terms of application, brushless motors for motorcycles are more widely used than brushed motors. From the current electric two-wheeler market, most electric vehicles use brushless motors. Even for electric tricycles and electric four-wheelers, brushless motors are more widely used than brushed motors. So, does this mean that brushed motors are useless? The answer is also no, because of the characteristics of brushed motors, many heavy-duty electric tricycles still use brushed motors.

 

Therefore, on the whole, the performance of the brushless motor of the motorcycle is better and more practical than the brushed motor, but its price will be higher. For users, if it is not a special heavy-duty electric tricycle, it is recommended to choose a brushless motor for motorcycles. Of course, when choosing a motor, you should also keep your eyes open to check whether the product's certificate of conformity is consistent with the actual information, and beware of choosing a refurbished motor.

 

If you are looking for a reliable brushless motor company, please contact us.

 

If you need any kinds of electric hub motor china, please contact us, as a professional  china electric bicycle motor manufacturer, Shengyi motor is willing to offer you high quality.