Electric Bike Rear Hub Motor Kit: The Ultimate Guide

The electric bike motor kit has become an increasingly popular option for those wishing to add an electric motor to their bike. One of the most common types of kit is the one that mounts to the rear wheel of the bike, and in this article, we’ll explore everything you need to know about this type of kit. From how it works to its advantages and limitations, find out everything you need to know about the rear wheel electric bike motor kit!

What is a Rear Hub Motor?

A rear hub motor is an electric motor built into the hub of the rear wheel of an electric bicycle. It is responsible for providing power to the rear wheel of the bicycle and propelling the rider forward. Unlike a centrally driven motor located near the bike’s pedals, a rear hub motor is discreetly hidden inside the bike’s wheel, making it less visible and more aesthetically pleasing.

Rear hub motor kits are a solution for converting an ordinary bike into an electric bike. These kits are designed to be mounted on the rear wheel of a bicycle and usually include an electric motor, battery, controller and pedal sensor. By adding a rear hub motor kit, a normal bike can be converted into an electric bike, giving the rider the benefits of an electric bike without having to buy a new bike. Rear hub motors are a popular choice among electric bike manufacturers because of their simplicity and reliability.

How does a e-bike rear hub motor conversion kit work?

A rear hub motor kit for electric bicycles converts the electrical energy stored in the battery into mechanical energy that drives the rear wheel of the bicycle. The controller, which is usually located on the bike’s handlebars, regulates the amount of energy supplied to the motor, thus controlling the speed of the bike.

The kit also includes a pedal sensor that detects when the rider is pedalling and sends a signal to the controller to provide additional power to the motor. Some kits may also include a thumb throttle that can power the motor without the need to pedal. Together, these components seamlessly integrate electric power into the mechanics of the bike, creating an efficient and enjoyable riding experience.

What are the benefits of an electric bike rear hub motor kit?

Rear hub motor on electric bike

Using a rear wheel electric motor kit has several advantages. On an e-bike with a rear wheel motor, it is possible to recover the energy via the motor brake. In contrast to the mid-motor, rear-wheel motors are quieter and wear out more slowly. In addition, similar to the front motor, they provide immediate assistance when starting off.

  • Increased range

electric bike rear hub motor allows cyclists to travel longer distances without tiring, as the electric motor helps propel the bike. This is particularly interesting for people who travel long distances or who have difficulty pedalling for health reasons.

In addition, the kit can also be useful for those who wish to explore rural or mountainous areas, as it can help overcome steep climbs and difficult terrain. With an electric motor kit for a rear wheel bicycle, cyclists can increase their range and enjoy a longer and more comfortable ride.

  • Less physical effort

With a electric bicycle rear hub conversion kit, cyclists can ride at higher speeds with less physical effort. This makes cycling more accessible to people who have physical difficulties with pedalling, such as the elderly or people with injuries or disabilities. In addition, it can also be beneficial for those who want to enjoy a bike ride without breaking a sweat or getting too much exercise. With a rear wheel electric motor kit, cyclists can enjoy the outdoors and the pleasure of pedaling without having to exert much physical effort.

  • More speed

A e-bike rear hub motor can enable a bike to travel at a higher speed than would be possible with human power alone. This can be useful for those who need to get to their destination more quickly or for those who want to enjoy a faster, more exciting ride. However, it is important to remember that the maximum speed of an electric bike may be limited by law in some places and it is important to check local regulations before using a high-speed electric bike.

  • Saving time

With a rear wheel electric bike motor kit, you can get to your destination faster without wasting time or money on public transport or in traffic jams. In addition, you can also avoid rush hour traffic and arrive in time for important meetings or appointments. This can be particularly useful for those who need to move quickly around town or in congested urban areas. In addition, using an electric bicycle saves time in finding parking and planning transport routes.

  • Greater versatility

A rear wheel electric bike motor kit can be a more versatile option than a traditional e-bike mid-drive motor kit, as it can be fitted to any bike and can be easily removed when not needed. This means that one person can have multiple bikes and only add the electric motor when needed. In addition, it allows greater flexibility in the type of bike used, as a mountain bike or road bike can be converted to an electric bike with the rear hub motor kit.

What are the limitations of a electric rear hub motor kit?

Although a rear wheel electric bike motor kit has many benefits, it also has some limitations to consider:

  • Additional weight

It is important to consider the additional weight when adding an electric motor kit to a rear wheel bicycle. Adding an electric motor and battery adds additional weight that can affect the bike’s manoeuvrability. However, many rear wheel bicycle electric motor kits are designed to be as light as possible and not affect the handling of the bicycle too much. It is advisable to choose an electric motor kit that has a good power-to-weight ratio and to ensure that the bike is balanced correctly before use. In addition, it is also important to consider the maximum weight that the electric motor can handle to ensure that it is being used safely and effectively.

  • Cost

It is important to consider cost when choosing a rear wheel electric bike motor kit. While this kit may be more expensive than a complete electric bike, it is still a cheaper option than a mid-motor conversion kit. In addition, it is important to note that installing a rear wheel electric bike motor kit may require the help of a professional, which can increase the overall cost of the project. It is advisable to compare prices and options before making a purchase to ensure you are getting the best value for your money.

  • Maintenance

It is important to keep maintenance in mind when considering the purchase of a rear wheel electric bike motor kit. Like any mechanical device, this kit may require periodic maintenance and repairs to ensure optimum performance. In addition, it is important to regularly check the kit’s parts, such as the battery and controller, to ensure that they are functioning properly and replace them if necessary. By keeping your electric rear wheel bike motor kit in good condition, you can ensure a safe and long-lasting riding experience.

  • Legal regulations

It is important to be aware of the legal regulations when considering the purchase of a electric bike motor kit. In some places, electric bikes are subject to specific regulations that must be complied with. For example, a licence or additional insurance may be required to ride them, particularly for high-speed e-bike or  S pedelec. In addition, it is necessary to be aware of local laws regarding speed limits and the use of bicycle helmets. By researching and following the legal regulations, you can ensure a safe and legal riding experience when using a rear wheel electric bike motor kit.

What are the differences between a front hub motor, a rear hub motor and a mid drive motor?

A front wheel motor, a rear wheel motor and a central motor are different types of electric motors that can be added to a bicycle to convert it into an electric bicycle. Each has its own characteristics and advantages:

  • Front hub motor: The electric motor of the front hub is located on the front wheel of the bicycle. This location provides less traction in difficult terrain, making it less ideal for off-road adventures. However, front hub motors are often the least expensive and easiest option to install. They also provide good power on flat terrain, making them a popular choice for commuters. However, they may not be ideal for high-speed riding and may provide less stability while riding.
  • Rear hub motor: The rear wheel motor is located on the rear wheel of the bike. This location provides better traction on rough terrain, making it ideal for off-road adventures. The weight of the motor is also concentrated at the rear, giving the rider greater stability while riding. In addition, rear hub motors provide consistent power on climbs, making them a popular choice for mountainous regions. However, they can be more expensive and are not ideal for high-speed riding.
  • Mid drive motor: This type of e-bike motor is placed in the centre of the bike, close to the pedals. This location provides an even power output, making it ideal for any terrain. In addition, the weight of the motor is evenly distributed throughout the bike, providing good stability and manoeuvrability. Mid-drive motors also provide greater power on flat terrain, making them a popular choice for commuters. However, they can be more expensive and require more maintenance.
Technical Differences Rear Wheel Electric Bike Motor Kit Mid-Drive Electric Bike Motor Kit Front Wheel Electric Bike Motor Kit
Motor Weight and Location Weight in rear wheel Weight in center of bike Weight in front wheel
Traction Improves traction on difficult terrain Provides uniform traction on any terrain Provides less traction on difficult terrain
Stability Provides greater stability when riding Provides good stability when riding Provides less stability when riding
Power Provides constant power output on uphill climbs Provides uniform power output on any terrain Provides less power on uphill climbs
Speed Enables higher speeds Enables higher speeds Not ideal for high speeds
Cost Medium-high price Medium-high price Low-medium price

How to choose the right rear hub motor kit?

When choosing a electric bike rear wheel motor, there are several factors to consider:

  • Wheel size

It is important to make sure that the rear wheel electric bike motor kit is compatible with the size of the rear wheel on your bike. This is especially important if you have a bike with a non-standard rear wheel size. Before purchasing an electric motor kit, you should verify that the kit is compatible with the size of your bicycle’s rear wheel to ensure proper fit and optimal operation of the kit. In addition, it is important to note that some electric motor kits may have additional compatibility requirements, such as a certain rim size or axle type.

  • Motor power

Motor power is a key factor to consider when choosing a rear wheel electric bike motor kit, as it determines the speed and climbing ability of the bike. Motor power is measured in watts (W) and can range from 250W to 1000W or more. For those who need to travel over steep terrain or up hills, a higher wattage motor is recommended, while for those who need to travel over flat terrain or short distances, a lower wattage motor may be sufficient.

It is important to remember that some countries have regulations regarding the maximum wattage allowed on an electric bicycle, so check local regulations before purchasing an electric rear wheel motor kit.

  • Battery type

The type of battery is another important factor to consider when choosing a rear wheel electric bike motor kit. There are different types of batteries available, each with their own advantages and disadvantages. Lithium-ion batteries are the most common and have a good power-to-weight ratio, making them ideal for electric bikes. Lead-acid batteries are heavier and less efficient, but less expensive.

Lithium iron phosphate (LiFePO4) batteries are safer and more durable than lithium-ion batteries, but are more expensive. It is important to choose a battery that suits the cyclist’s needs in terms of duration, weight and cost. In addition, the charging time of the battery and the distance that can be travelled on a single charge should also be taken into account.

  • Brand and quality

It is important to choose a rear wheel electric bike motor kit from a reputable, high quality brand to ensure the durability and reliability of the kit. High quality rear wheel electric motor kits are designed to last and deliver optimum performance in a variety of conditions. It is important to research and compare different brands and models before purchasing a rear wheel electric bike motor kit to ensure that you are getting the best possible product. Also, keep in mind that high quality rear wheel electric motor kits can be more expensive, but are often worth the investment in the long run.

Bafang Rear Hub Motor Kit

The Bafang rear hub motor kit is one of the most popular kits on the electric bike market. It is a kit that mounts on the rear wheel of a bike to add an electric motor, turning a normal bike into an electric bike. This kit is very popular with cyclists because of its quality and performance.

Its features and specifications include its power output, available from 250W to 1000W, and the type of battery it uses, a lithium-ion battery, which is lightweight and has a high energy capacity. It also has an intelligent controller that automatically adjusts the power of the motor according to the rider’s needs, a pedal sensor that detects when you are pedalling and adjusts the power of the motor accordingly, and an LCD screen that displays important information such as speed, distance travelled and battery charge.

Installing the Bafang rear hub  motor kit can be a complicated process and it is recommended that you seek professional help to ensure that it is installed correctly. However, the kit comes with a detailed instruction manual that explains the installation process step by step. Overall, the Bafang Rear Wheel Electric Bike Motor Kit is an excellent choice for those who want to transform their bike into a high quality, high performance electric bike.

Conclusion

A rear hub electric bike motor kit can be a great option for those who want to add an electric motor to their bike and enjoy the benefits it offers. However, it is important to consider the limitations and choose the right kit for your needs before installing it.

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