Replacing the cable on your SRAM RED AXS Power Meter[paid link] is a crucial maintenance task that ensures smooth shifting performance and optimal power measurement accuracy. Over time, cables can stretch, fray, or become contaminated, all of which can hinder the performance of your drivetrain and power meter. This guide will walk you through the steps to replace the cable on your RED AXS Power Meter[paid link], ensuring better performance and longevity.
Tools Required
- 5mm Allen wrench[paid link]
- Torque wrench[paid link]
- New cable (compatible with RED AXS system)
- Cable cutters
- Lubricant (light grease or cable-specific lube)
- Electrical tape (optional)
- Clean rag
- Cable tensioning tool (optional)
Preparation
Before starting the cable replacement process, it’s essential to prepare your workspace and gather all necessary tools. Having everything within reach will make the task go more smoothly.
- Remove the Power Meter from the Bike
Begin by removing the RED AXS Power Meter crankset from your bike. This is necessary to access the power meter’s cable and to ensure you can work in a safe, clean environment. - Clean the Area
Wipe down the crankset and the area around the power meter to remove any dirt, grease, or debris. This helps prevent contaminants from interfering with the new cable installation. - Disconnect the Old Cable
Use the 5mm Allen wrench[paid link] to disconnect the existing cable from the power meter. Take note of how the cable is routed and connected so that you can replicate the setup with the new cable.
Cable Replacement Process
- Route the New Cable
Start by threading the new cable through the cable routing guides on the bike frame, following the same path as the old cable. Make sure the cable is routed smoothly and is not kinked or twisted in any way. - Install the Cable into the Power Meter
Attach the new cable to the power meter, ensuring it is securely connected. For a secure and clean installation, apply a small amount of lubricant to the cable end before inserting it into the power meter. This helps reduce friction and ensures the cable slides smoothly. - Adjust the Cable Tension
Once the cable is installed, adjust the tension to ensure it is neither too tight nor too loose. This can be done by adjusting the barrel adjuster on your derailleur or by using a cable tensioning tool for more precise adjustments. Proper tension is essential for accurate power readings and smooth shifting. - Check for Smooth Movement
Shift through all gears on the bike to ensure the cable moves freely without any sticking or jerky movements. If the shifting feels sluggish or unresponsive, adjust the tension until the system works smoothly. - Reinstall the Crankset
After confirming that the cable is correctly installed and adjusted, reinstall the crankset onto the bike. Make sure the crankset is securely tightened according to the manufacturer’s torque specifications to avoid any issues while riding. - Final Check
Once everything is installed, take the bike for a test ride. Pay attention to the shifting performance and the power meter readings. If the bike shifts smoothly and the power readings are accurate, the installation is complete.
Troubleshooting Tips
- Cable Tension Issues: If you notice the shifting is still not smooth or the power meter isn’t providing accurate readings, check the cable tension again. Often, small adjustments can make a significant difference in performance.
- Inconsistent Power Meter Readings: Ensure that the cable is properly connected and that there are no loose connections. If the problem persists, check the power meter’s battery and calibration.
- Frayed or Damaged Cable: If your old cable was frayed or damaged, inspect the power meter and other drivetrain components for any signs of wear. Replacing the cable is often the first step in fixing drivetrain issues, but if components are excessively worn, they may need to be replaced as well.
Conclusion
Replacing the cable on your SRAM RED AXS Power Meter is a straightforward process that significantly impacts performance. With proper installation and adjustment, you can ensure the system works at its best, delivering precise power measurements and smooth shifting. By following the steps outlined in this guide, you will not only maintain the longevity of your power meter but also optimize your bike’s overall drivetrain performance.