SpeedBox 3.1 User Manual

Introduction

The SpeedBox 3.1 is an E-Bike tuning kit designed to remove the speed limit of your pedelec, allowing you to experience the full power of your e-bike. This product displays the actual speed and enables you to set a custom maximum speed, optimizing performance and riding enjoyment. It is meticulously engineered to provide unrestricted speeds, limited only by your pedaling cadence.

Compatibility

The SpeedBox 3.1 is compatible with specific Bafang Max Drive motors:

• Bafang Max Drive M300
• Bafang Max Drive M400
• Bafang Max Drive M420 (4 pin Connector)

Important Note: This product is not compatible with Bafang Max Drive M500 motors, SpeedBox App, or displays with UART connectors.

Figure 1: Compatibility diagram illustrating the difference between compatible CAN display connectors and incompatible UART display connectors.

Setup and Installation

The SpeedBox 3.1 is designed for straightforward installation using simple tools. Detailed instructions and videos are available to guide you through the process, making it suitable for home installation.

Pre-installation Requirement: If you are installing the SpeedBox on a brand new e-bike, it is crucial to ride the bike for at least 10 km before activating the chip for the first time. This ensures proper calibration and function.

Figure 2: The SpeedBox 3.1 tuning chip, showing its compact design and wiring harness.

Figure 3: The SpeedBox 3.1 unit integrated into a Bafang M420 e-bike motor, illustrating the connection points.

Figure 4: Wiring diagram for Bafang motors, indicating where the SpeedBox 3.1 connects, specifically highlighting the 4-pin connector.

Figure 5: Visual guide for the installation of the SpeedBox 3.1, detailing the sequence of connections to the Bafang motor.

Operating Instructions

The SpeedBox 3.1 is activated and deactivated directly from your e-bike display.

• Activation: Press the LIGHT button or the + - + - sequence on your e-bike display. The display will briefly show "99 km/h" to confirm activation. From this moment, you can ride at unrestricted speeds.
• Deactivation: Press the LIGHT button again. The display will show "25 km/h", and the speed limit of 25 km/h will be reactivated. Your pedelec will then function as it did before the tuning was applied.

Some SpeedBox models, such as SpeedBox B tuning, can also connect to your mobile phone via Bluetooth, allowing you to monitor and record ride parameters through the SpeedBox app.

Specifications

Maintenance

The SpeedBox 3.1 is designed to be maintenance-free. Ensure all connections remain secure and free from dirt or moisture. Regular cleaning of your e-bike, including the motor area, is recommended to prevent debris buildup around the installed chip.

Troubleshooting

If you encounter any issues with the SpeedBox 3.1, please consider the following:

• Incorrect Speed Display: Ensure the chip is properly activated as per the operating instructions. Check all cable connections for looseness.
• Motor Not Reaching Unlimited Speed: Verify compatibility with your specific Bafang motor model and display type (CAN vs. UART). Re-check installation steps.
• General Malfunction: Try deactivating and reactivating the SpeedBox. If the issue persists, carefully remove and re-install the chip, ensuring all connections are firm.

For persistent problems or complex issues, please contact SpeedBox customer support for assistance.

Warranty and Support

For warranty information and technical support, please refer to the official SpeedBox website or contact the seller directly. Detailed contact information can often be found on the product packaging or the manufacturer's website.

Manufacturer: SpeedBox

Website: www.speedbox-tuning.com