Choosing the Right Motor for Your Mid-Drive Bicycle Build
" "Building a mid-drive system for your bicycle can significantly enhance its performance, transforming an ordinary ride into a thrilling and powerful experience. However, selecting the right motor is crucial to ensure that your project is both effective and efficient. In this guide, we will explore the options available and help you make an informed decision. Specifically, we will focus on the Bafang BBSHD mid-drive system and the Luna Cycles Sur-Ron bare motor, providing a comprehensive overview of their features, capabilities, and considerations for installation.
" "Bafang BBSHD Mid-Drive Retrofit: A Popular Choice
" "The Bafang BBSHD is a highly regarded mid-drive motor, known for its ease of installation and robust performance. Installing this motor involves replacing the existing crankset with the mid-drive unit. The process is made simpler by using a bottom bracket width measurement, which ensures compatibility with your bicycle frame. The Bafang BBSHD is priced at around $650, and it includes essential components such as mounting brackets, wiring harness, a built-in controller, and a display, which collectively contribute to its comprehensive setup.
" "However, it's important to consider the budget when purchasing the Bafang BBSHD. While it comes with a relatively complete kit, you will still need to add a battery, which typically costs around $400. Additionally, some bicycles equipped with 11-speed cassettes or newer bottom brackets may not be compatible with the BBSHD. For the best results, it's advisable to focus on bikes produced before 2012, as they are more likely to fit the Bafang BBSHD. In some cases, you might need to solder new battery connectors, especially if you opt for a 48V or 52V battery. The Bafang BBSHD is known for its high power output, particularly with a 52V battery, which can propel your e-bike at speeds of up to 28 mph, easily outperforming many factory-built e-bikes that operate at around 1000 watts.
" "Luna Cycles: For Maximum Power and Off-Road Use
" "Luna Cycles offers the Sur-Ron bare motor as an alternative option, designed for maximum power and off-road use. The bare motor is priced similarly to the Bafang BBSHD at around $650, but it is sold separately from the controller. Unique to the Luna Cycles solution is the flexibility in attaching the motor to the rear drive or an existing chainring, thanks to various chains and freewheels available from the manufacturer. The motor controller, a vital component, is sold separately for an additional $450, increasing the overall cost of the setup.
" "The true power of the Luna Cycles Sur-Ron bare motor shines when it comes to off-road performance. With the right components and a high-voltage battery, this motor can deliver an impressive 5200 watts of power. However, it's crucial to remember that this level of power is best suited for electric motorcycles rather than regular bicycles. The hardware used in this setup is designed for more rugged conditions and may not be as reliable or long-lasting as dedicated bicycle components. Therefore, if you're planning an off-road adventure, the Luna Cycles setup might be the better choice, but for a regular bicycle build, the Bafang BBSHD remains a more practical option.
" "Final Considerations for Installation
" "When installing either the Bafang BBSHD or the Luna Cycles Sur-Ron bare motor, there are several factors to consider. Firstly, ensure that the bicycle's bottom bracket width is compatible with the chosen motor. Secondly, the choice of battery type (48V or 52V) can significantly impact the motor's performance, so it's important to choose the right voltage for your needs. Additionally, you may need to solder new battery connectors to accommodate the voltage requirements of your chosen battery. Lastly, if you plan to modify or replace existing components, such as the chain or chainring, ensure that these changes align with the motor's specifications.
" "Both the Bafang BBSHD and Luna Cycles Sur-Ron bare motor offer powerful solutions for building a mid-drive system on your bicycle. While the Bafang BBSHD is easier to install and more compatible with a wider range of bicycles, the Luna Cycles Sur-Ron bare motor provides the flexibility needed for off-road use. Regardless of your choice, carefully consider the specific requirements and potential challenges to ensure a successful and satisfying project.