Introduction
This manual provides essential instructions for the installation, operation, and maintenance of your BAFANG BBS01B 36V 250W Mid-Drive Ebike Motor Conversion Kit. Please read this manual thoroughly before installation and use to ensure proper function and safety. This kit is designed to convert standard bicycles into electric bicycles, offering three driving modes: pure electric, power-assisted, and manpower.
Important Safety Information
- Always wear a helmet when riding an electric bicycle.
- Ensure all connections are secure and waterproof before riding.
- Do not modify the motor or battery system. Unauthorized modifications can lead to malfunction and void warranty.
- Regularly check brakes, tires, and all components for wear and damage.
- Adhere to local traffic laws and regulations for electric bicycles.
- Keep children and pets away from the motor and battery during installation and charging.
Package Contents
Verify that all components are present and undamaged upon opening the package.
- BAFANG BBS01B Mid-Drive Motor (36V 250W)
- C961 Display (with 9 levels of pedal assist and automatic backlight)
- Brake Levers (compatible with mechanical brakes)
- Thumb Throttle
- Crank Arms
- Speed Sensor with Magnet
- 1T4 Main Cable Harness
- Mounting Screws and Accessories
- Chainring (specific size may vary)
Technical Specifications
| Feature | Specification |
|---|---|
| Motor Type | Mid-Drive Motor |
| Model | BBS01B |
| Rated Voltage | 36 Volts |
| Rated Power | 250 Watts |
| Max Torque | 80 N.m |
| Max Speed (Assisted) | 25 km/h |
| Motor Weight | 3.8 Kilograms (8.38 Pounds) |
| Bottom Bracket Compatibility | 68mm (JIS standard turret) |
| Display | C961 (9 levels PAS, auto backlight) |
Compatibility
The BAFANG BBS01B kit is designed for bicycles with a standard JIS 68mm bottom bracket. This includes most mountain bikes, road bikes, commuter bikes, and folding bikes. It is crucial to measure your bicycle's bottom bracket length to ensure compatibility before installation.
Ensure sufficient space is available on your bicycle frame for the motor and battery placement.
Setup and Installation Guide
Installation of the BAFANG mid-drive motor kit requires basic mechanical skills and appropriate tools. If you are unsure about any step, it is recommended to seek professional assistance.
Overview of Components and Connections
Installation Steps (Summary)
- Prepare the Bicycle: Remove the existing bottom bracket, crankset, and chain.
- Install the Motor: Insert the BAFANG mid-drive motor into the bottom bracket shell. Secure it with the provided fixed bracket, nuts, and screws.
- Attach Crank Arms and Chainring: Install the new chainring and crank arms onto the motor spindle.
- Mount Display and Controls: Attach the C961 display, brake levers, and thumb throttle to the handlebars.
- Install Speed Sensor: Mount the speed sensor on the rear chainstay and attach the magnet to a spoke on the rear wheel. Ensure proper alignment and gap.
- Connect Wiring: Connect all components to the 1T4 main cable harness, then connect the harness to the motor. Ensure all connections are firm and correctly oriented.
- Install Battery: Mount your compatible 36V battery securely on the bicycle frame and connect it to the motor system.
- Cable Management: Secure all cables neatly with zip ties to prevent snagging or damage.
Operating Instructions
Powering On/Off
To power on the system, press and hold the power button on the C961 display. To power off, press and hold the same button until the display turns off.
C961 Display Functions
The C961 display provides real-time information and allows you to adjust settings.
- Speed Display: Shows current, average, and maximum speed.
- Battery Level: Indicates remaining battery charge.
- Pedal Assist System (PAS) Level: Adjust assistance levels (1-9) using the '+' and '-' buttons. Higher numbers provide more motor assistance.
- Trip Distance/Odometer: Displays current trip distance or total mileage.
- Backlight: Automatic backlight for visibility in varying light conditions.
Driving Modes
The BAFANG BBS01B kit offers three distinct driving modes:
- Manpower Mode: The motor provides no assistance. The bicycle operates like a standard pedal bike.
- Power-Assisted Mode (PAS): The motor provides assistance based on your pedaling input and the selected PAS level. This is the primary mode for electric cycling.
- Pure Electric Mode (Throttle): The motor provides power directly via the thumb throttle, without requiring pedal input. This mode is typically used for short bursts of speed or starting from a stop.
Maintenance
- Regular Cleaning: Keep the motor, battery, and display clean. Use a damp cloth; avoid high-pressure washing directly on electrical components.
- Check Connections: Periodically inspect all electrical connections for corrosion or looseness.
- Lubrication: Keep the chain and other moving parts of the bicycle properly lubricated.
- Battery Care: Store the battery in a cool, dry place. Avoid fully discharging the battery and charge it regularly, even when not in use, to prolong its lifespan.
- Professional Inspection: Consider a professional inspection of the motor and electrical system annually.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor not powering on | Battery not connected or discharged; loose wiring; display issue. | Check battery connection and charge level. Inspect all cable connections. Try restarting the display. |
| No pedal assist | PAS level set to 0; speed sensor misaligned or damaged; brake levers engaged. | Increase PAS level on display. Check speed sensor alignment and magnet. Ensure brake levers are not stuck. |
| Throttle not working | Throttle cable loose or damaged; system error. | Check throttle cable connection. Consult a technician if problem persists. |
| Display shows error code | Specific component malfunction. | Refer to the C961 display manual for specific error code meanings and solutions. |
Warranty and Support
BAFANG products typically come with a manufacturer's warranty covering defects in materials and workmanship. Please refer to your purchase documentation or the official BAFANG website for specific warranty terms and conditions.
For technical support, spare parts, or warranty claims, please contact your authorized BAFANG dealer or the BAFANG customer service department. Keep your purchase receipt and product serial number readily available.
Manufacturer: BAFANG
Date First Available: March 18, 2024
