1. Product Overview
The SIGEYI AXO Potentiometer is a high-precision power meter designed for cyclists to accurately measure their performance. This spider-based system integrates seamlessly with compatible cranksets, providing essential data such as power output, cadence, and left/right balance.
Its robust design and advanced features make it an ideal tool for both road and mountain biking enthusiasts looking to optimize their training and performance.
Figure 1.1: Front view of the SIGEYI AXO Potentiometer, showing the central spline interface and bolt holes for chainring attachment. The SIGEYI logo is visible on the left side.
2. Key Features
- High Accuracy: Provides power measurement with a precision of ±1.0%.
- Comprehensive Data: Measures power (0-2000 watts), cadence (30-220 rpm), and Left/Right balance.
- Robust Design: IP67 waterproof rating ensures durability in various weather conditions.
- Automatic Zero Reset: Simplifies calibration for consistent readings.
- Real-time Temperature Compensation: Maintains accuracy across different operating temperatures.
- Long Battery Life: Up to 300 hours of operating time on a single charge.
- Magnetic Charging: Convenient and secure charging method.
- Dual Connectivity: Supports ANT+ and Bluetooth 4.0 for wide compatibility with cycling computers and smart devices.
- App Updates: Firmware updates available via the SIGEYI App.
3. Installation and Setup
3.1 Package Contents
Before installation, ensure all components are present:
- SIGEYI AXO Potentiometer (Ewings-nonboost-4-104)
- Charging Cable
- Stickers
3.2 Compatibility
This specific model (Ewings-nonboost-4-104) is designed for MTB chainrings with a 4-bolt, 104BCD configuration and is compatible with eeWings MTB cranksets. It is a non-boost version.
3.3 Installation Steps
The SIGEYI AXO Potentiometer is a spider-based power meter that installs between your crank arm and chainring. Follow these general steps for installation:
- Prepare your Crankset: Remove your existing chainring from your compatible eeWings MTB crankset.
- Attach the Potentiometer: Align the SIGEYI AXO Potentiometer with the bolt holes on your crank arm. Ensure the orientation is correct as per the markings on the device.
- Mount the Chainring: Attach your 4-bolt, 104BCD chainring to the SIGEYI AXO Potentiometer.
- Secure Bolts: Use the appropriate chainring bolts to secure the chainring to the potentiometer, and the potentiometer to the crank arm. Tighten to the manufacturer's recommended torque specifications.
- Reinstall Crankset: Reinstall the crankset onto your bicycle's bottom bracket, following your crankset manufacturer's instructions.
Figure 3.1: Top view of the SIGEYI AXO Potentiometer, highlighting the blue accent design. This image shows the bolt pattern for chainring attachment.
Figure 3.2: The SIGEYI AXO Potentiometer shown installed on a bicycle crankset, demonstrating its position between the crank arm and the chainring (chainring not fully visible).
4. Operation
4.1 Pairing with Devices
The SIGEYI AXO Potentiometer supports both ANT+ and Bluetooth 4.0 connectivity. To pair with your cycling computer, smartphone, or other compatible device:
- Ensure the potentiometer is awake (rotate the crank a few times).
- On your cycling computer or app, search for new sensors.
- Select the SIGEYI AXO from the list of discovered devices.
- Confirm pairing.
4.2 Zero Reset (Calibration)
The potentiometer features automatic zero reset. For optimal accuracy, it is recommended to perform a manual zero reset before each ride or after significant temperature changes. This can typically be initiated through your paired cycling computer or the SIGEYI App.
- Ensure the bike is stationary and no weight is on the pedals.
- Access the calibration or zero offset function on your paired device.
- Follow the on-screen prompts.
4.3 Data Monitoring
Once paired, your device will display real-time data including power (watts), cadence (RPM), and Left/Right power balance. Consult your cycling computer or app manual for customizing data fields.
5. Charging and Maintenance
5.1 Charging the Battery
The SIGEYI AXO Potentiometer is equipped with a rechargeable battery. Use the provided magnetic charging cable to charge the device. Connect the magnetic end to the charging port on the potentiometer and the USB end to a standard USB power adapter (not included).
- A full charge provides up to 300 hours of operating time.
- Charge indicators (LEDs) on the device will show charging status.
5.2 General Maintenance
- Cleaning: Wipe the potentiometer with a damp cloth after rides, especially after riding in wet or dirty conditions. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the device in a cool, dry place when not in use.
- Firmware Updates: Regularly check for and install firmware updates via the SIGEYI App to ensure optimal performance and access to new features.
- Water Resistance: The IP67 rating means the device is protected from dust and can withstand immersion in water up to 1 meter for 30 minutes. However, avoid prolonged submersion or high-pressure water jets.
6. Troubleshooting
If you encounter issues with your SIGEYI AXO Potentiometer, try the following steps:
- No Power Reading:
- Ensure the battery is charged.
- Confirm the device is awake (rotate cranks).
- Check if the device is properly paired with your cycling computer/app.
- Perform a zero reset.
- Inconsistent Readings:
- Perform a zero reset.
- Ensure the installation bolts are tightened to the correct torque.
- Check for any physical damage or obstruction.
- Connectivity Issues:
- Ensure Bluetooth/ANT+ is enabled on your receiving device.
- Move closer to the potentiometer.
- Try unpairing and re-pairing the device.
- Check for firmware updates via the SIGEYI App.
If issues persist, contact SIGEYI customer support for further assistance.
7. Technical Specifications
| Specification | Value |
|---|---|
| Accuracy | ±1.0% |
| Power Range | 0-2000 watts |
| Cadence Range | 30-220 rpm |
| Data Output | Power, Cadence, L/R Balance |
| Waterproof Rating | IP67 |
| Zero Reset | Automatic |
| Compensation | Real-time Temperature Compensation |
| Operating Time | Up to 300 hours |
| Battery Type | Rechargeable Battery |
| Charging Type | Magnetic Charging |
| Connectivity | ANT+ and Bluetooth 4.0 |
| Weight | 78 g |
| Operating Temperature | -20 to 50 °C |
| Updates | Via SIGEYI App |
| Dual-sided Measurement | Yes |
| Mounting Type | MTB Chainring, 4-bolt, 104BCD |
| Boost Compatibility | No |
| Crank Compatibility | eeWings MTB |
| Material Type | Aluminum |
8. Warranty and Support
For warranty information, please refer to the warranty card included with your product or visit the official SIGEYI website. For technical support, troubleshooting beyond this manual, or spare parts, please contact SIGEYI customer service through their official channels.
Keep your purchase receipt as proof of purchase for warranty claims.



