There are many types of electric motorcycle drivetrain, if according to the electric bicycle drive form, it can be divided into 5 types:
Friction wheel drive type
This electric motorcycle drivetrain type is an early product of electric bicycle, which is characterized by simple structure, easy manufacturing, low cost and convenient maintenance. However, low efficiency, poor modeling, serious tire wear, and access obstacles to slippery and muddy road conditions have been basically eliminated.
Side coat chain or shaft drive type
It is an early simple product with simple structure, easy manufacturing and low cost. It is more convenient for transforming old bicycles into electric vehicles, but it affects the appearance and shape. Due to the motor volume, power and other limitations, low efficiency, poor reliability, can not be promoted and applied.
Front axle drivetrain type
This type of electric motorcycle drivetrain due to the motor mounted on the front axle, the center of gravity is not reasonably distributed, can not be light, flexible handlebar rotation, easy to jam the high-speed rotation of the motor, resulting in safety accidents, so rarely used.
Rear axle drivetrain type
Currently the mainstream use of an electric motorcycle drivetrain type, the motor and rear axle into one, because of its position in the rear of the vehicle, the appearance of the shape of the impact is not great; because of the hub motor is basically to realize the professional production, cost reduction, widely used.
However, this type of electric motorcycle drivetrain type has some shortcomings, when it is necessary to replace tires or maintain the motor, it is necessary to disassemble the power cord or remove all the spokes, which causes a lot of inconvenience for maintenance.
In addition, due to the large outer diameter of the hub motor, it makes the spokes and the center of the wheel deflect at a large angle. This causes a bending moment on the outer end of the spokes, which can easily cause them to break.
Center chain drive type
This kind of electric motorcycle drivetrain is a new generation of products traveling after the previous types of products; it is a relatively independent brushed (or brushless) high-speed motor and gearbox, forward and reverse clutches, booster sensors and so on to form a whole, through the wheel disc, flywheel drive rear wheel.
The center of gravity is placed in a reasonable position to protect the stability of the ride and safety, and also create conditions for beautification. At the same time, it also creates conditions for beautification.
When disconnecting the power supply, manpower riding, positive and negative clutch can be motor gear system and pedal drive system safety linkage, which is riding such as bicycles and no difference; and sealing, lubrication performance is good, easy maintenance
In a variety of electric motorcycle drivetrain type each has its own advantages, and the center chain drive also has not easy to overcome the shortcomings in the gears, clutches, boxes and other parts of the machining accuracy and heat treatment requirements of the higher which increases the processing difficulty and processing costs; this also affects the rapid popularization of this type of products.
Why are all electric scooters chain driven?
Actually, that’s not entirely true, electric scooters don’t always see a chain drive, many of the models I’ve seen instead have direct rear-wheel drive, and there’s very little additional conventional gearing, and only some standard two wheeler electric bike have an auxiliary foot pedal.
This is mainly because conventional electric scooters it to save money, direct rear-wheel drive would be simpler and more efficient, without the need for additional conventional units to increase manufacturing costs.
Of course the relatively high end electric motorcycle in addition to the chain drive such as electric motorcycle drivetrain, will also be keen on the application of the belt drive system, so the first statement of this question, inevitably a little too one-sided.
The reason why the electric motorcycle drivetrain with a mid motor will be accompanied by a belt drive is mainly to reduce the noise of the power transmission process, so that it will run more smoothly, and to a certain extent, it can enhance the ride quality.
In other words, the most direct difference between the two electric motorcycle drivetrain, chain drive and belt drive, without considering the other premise, is the running noise and maintenance cycle, that is to say, the belt drive this kind of electric motorcycle drivetrain’s most important feature lies in the maintenance cycle is longer, and the running process will be smoother, but it is not practical for some car models, and the upfront cost will also be relatively high.
Pedal electric motorcycle drivetrain why use belt drive?
If the chain or belt of an electric motorcycle is just a simple transmission device, the belt of a scooter can be more than just a transmission, it also acts as a speed changer.
It is well known that the scooter motorcycle fitted with an internal combustion engine, which, in order to emphasize the ease of operation, employs a continuously variable transmission with automatic separation, and the belt drive is an important member of this set, and if the padel electric motorcycle does not use a belt, but a chain, it is impossible to achieve the purpose of the infinitely variable speed.
From this we can see, pedal electric motorcycle drivetrain belt in addition to the transmission of power, but also by the front and rear sets of two sets of wheels at any time to change the trajectory of activities, but also based on this it can make the engine power, according to the requirements of the road conditions in real time changes to achieve the most ideal state.
So here is the belt in addition to an electric motorcycle drivetrain device, but also a shifting helper, it is such a working characteristic of the conventional chain is obviously can not be replaced, to be more high-powered can only be on the “steel belt” but at present there is no scooter so operated, on the contrary, some models have adopted the external chain tradition.
Why electric scooters don’t use belt drives
Belt drive manufacturing costs don’t allow for further amplification of power to be transmitted, especially for the lower end of the range, and there’s absolutely no need to make a simple drive process more complicated. Note, however, that some of the current high-end electric motors, which also have the ability to shift three or more levels, will also have geared transmissions.
Only at the beginning of the start there is no need for a clutch, after all, the electric motor is fully capable of cutting off the power through the operation of the power failure, which is one of its advantages over the internal combustion engine.
To summarize, electric motorcycle drivetrain doesn’t necessarily have to be chain drive, there will also be belt drive models among them. The main reason why the electric motorcycle drivetrain uses a belt drive is because it also needs a gearbox to boost the power performance, which is caused by the difference in power characteristics between the two, which can also be understood as the difference in power between a fuel engine and an electric motor.
If you want to know what’s the difference between a fuel motorcycle and an electric one, check out electric motorcycle vs gas.
Lucky
Hi, I am Lucky, graduated from a well-known university in China, now mainly engaged in article editing on lithium motorcycle batteries, and the battery swapping station, I am committed to offering services and solutions about battery swap station for various industries.
Types and matches of electric motorcycle drivetrain
Types of electric motorcycle drivetrain
There are many types of electric motorcycle drivetrain, if according to the electric bicycle drive form, it can be divided into 5 types:
Friction wheel drive type
This electric motorcycle drivetrain type is an early product of electric bicycle, which is characterized by simple structure, easy manufacturing, low cost and convenient maintenance. However, low efficiency, poor modeling, serious tire wear, and access obstacles to slippery and muddy road conditions have been basically eliminated.
Side coat chain or shaft drive type
It is an early simple product with simple structure, easy manufacturing and low cost. It is more convenient for transforming old bicycles into electric vehicles, but it affects the appearance and shape. Due to the motor volume, power and other limitations, low efficiency, poor reliability, can not be promoted and applied.
Front axle drivetrain type
This type of electric motorcycle drivetrain due to the motor mounted on the front axle, the center of gravity is not reasonably distributed, can not be light, flexible handlebar rotation, easy to jam the high-speed rotation of the motor, resulting in safety accidents, so rarely used.
Rear axle drivetrain type
Currently the mainstream use of an electric motorcycle drivetrain type, the motor and rear axle into one, because of its position in the rear of the vehicle, the appearance of the shape of the impact is not great; because of the hub motor is basically to realize the professional production, cost reduction, widely used.
However, this type of electric motorcycle drivetrain type has some shortcomings, when it is necessary to replace tires or maintain the motor, it is necessary to disassemble the power cord or remove all the spokes, which causes a lot of inconvenience for maintenance.
In addition, due to the large outer diameter of the hub motor, it makes the spokes and the center of the wheel deflect at a large angle. This causes a bending moment on the outer end of the spokes, which can easily cause them to break.
Center chain drive type
This kind of electric motorcycle drivetrain is a new generation of products traveling after the previous types of products; it is a relatively independent brushed (or brushless) high-speed motor and gearbox, forward and reverse clutches, booster sensors and so on to form a whole, through the wheel disc, flywheel drive rear wheel.
The center of gravity is placed in a reasonable position to protect the stability of the ride and safety, and also create conditions for beautification. At the same time, it also creates conditions for beautification.
When disconnecting the power supply, manpower riding, positive and negative clutch can be motor gear system and pedal drive system safety linkage, which is riding such as bicycles and no difference; and sealing, lubrication performance is good, easy maintenance
In a variety of electric motorcycle drivetrain type each has its own advantages, and the center chain drive also has not easy to overcome the shortcomings in the gears, clutches, boxes and other parts of the machining accuracy and heat treatment requirements of the higher which increases the processing difficulty and processing costs; this also affects the rapid popularization of this type of products.
Why are all electric scooters chain driven?
Actually, that’s not entirely true, electric scooters don’t always see a chain drive, many of the models I’ve seen instead have direct rear-wheel drive, and there’s very little additional conventional gearing, and only some standard two wheeler electric bike have an auxiliary foot pedal.
This is mainly because conventional electric scooters it to save money, direct rear-wheel drive would be simpler and more efficient, without the need for additional conventional units to increase manufacturing costs.
Of course the relatively high end electric motorcycle in addition to the chain drive such as electric motorcycle drivetrain, will also be keen on the application of the belt drive system, so the first statement of this question, inevitably a little too one-sided.
The reason why the electric motorcycle drivetrain with a mid motor will be accompanied by a belt drive is mainly to reduce the noise of the power transmission process, so that it will run more smoothly, and to a certain extent, it can enhance the ride quality.
In other words, the most direct difference between the two electric motorcycle drivetrain, chain drive and belt drive, without considering the other premise, is the running noise and maintenance cycle, that is to say, the belt drive this kind of electric motorcycle drivetrain’s most important feature lies in the maintenance cycle is longer, and the running process will be smoother, but it is not practical for some car models, and the upfront cost will also be relatively high.
Pedal electric motorcycle drivetrain why use belt drive?
If the chain or belt of an electric motorcycle is just a simple transmission device, the belt of a scooter can be more than just a transmission, it also acts as a speed changer.
It is well known that the scooter motorcycle fitted with an internal combustion engine, which, in order to emphasize the ease of operation, employs a continuously variable transmission with automatic separation, and the belt drive is an important member of this set, and if the padel electric motorcycle does not use a belt, but a chain, it is impossible to achieve the purpose of the infinitely variable speed.
From this we can see, pedal electric motorcycle drivetrain belt in addition to the transmission of power, but also by the front and rear sets of two sets of wheels at any time to change the trajectory of activities, but also based on this it can make the engine power, according to the requirements of the road conditions in real time changes to achieve the most ideal state.
So here is the belt in addition to an electric motorcycle drivetrain device, but also a shifting helper, it is such a working characteristic of the conventional chain is obviously can not be replaced, to be more high-powered can only be on the “steel belt” but at present there is no scooter so operated, on the contrary, some models have adopted the external chain tradition.
Why electric scooters don’t use belt drives
Belt drive manufacturing costs don’t allow for further amplification of power to be transmitted, especially for the lower end of the range, and there’s absolutely no need to make a simple drive process more complicated. Note, however, that some of the current high-end electric motors, which also have the ability to shift three or more levels, will also have geared transmissions.
Only at the beginning of the start there is no need for a clutch, after all, the electric motor is fully capable of cutting off the power through the operation of the power failure, which is one of its advantages over the internal combustion engine.
To summarize, electric motorcycle drivetrain doesn’t necessarily have to be chain drive, there will also be belt drive models among them. The main reason why the electric motorcycle drivetrain uses a belt drive is because it also needs a gearbox to boost the power performance, which is caused by the difference in power characteristics between the two, which can also be understood as the difference in power between a fuel engine and an electric motor.
If you want to know what’s the difference between a fuel motorcycle and an electric one, check out electric motorcycle vs gas.