The SRAM Force eTap AXS is one of the most advanced wireless electronic shifting systems on the market, offering cyclists smooth, precise, and reliable shifting performance. However, like any high-end component, the installation of the Force eTap AXS requires careful attention to detail to ensure that everything works as intended. Even minor mistakes during the installation process can lead to issues such as poor shifting performance, excessive wear, or damage to other drivetrain components.
In this guide, we’ll walk through some of the most common installation mistakes that can affect your Force eTap AXS set-up and offer tips on how to avoid them. Whether you’re a seasoned mechanic or a DIY enthusiast, getting the installation right is crucial for the longevity and efficiency of your bike’s shifting system.
Tools Required
- Torque wrench [paid link]
- 5mm Allen wrench [paid link]
- 2.5mm Allen wrench [paid link]
- Shimano-style cable cutters (for trimming wires)
- Small flat-head screwdriver
- E-tap AXS installation app (for updates and setup)
1. Incorrect Torque Settings
When installing the Force eTap AXS components, one of the most common mistakes is not adhering to the correct torque specifications. Over-tightening or under-tightening bolts can cause issues ranging from poor shifting performance to damaging the frame or components.
Why This Happens:
The eTap AXS system uses a combination of electronic components and mechanical fastenings, making it critical to apply the right amount of torque to each bolt.
How to Avoid It:
- Always refer to the official SRAM installation manual for torque specifications.
- Use a torque wrench [paid link] to ensure the bolts are tightened to the recommended values (usually between 4-8 Nm, depending on the component).
- Be especially careful with the derailleur hanger, battery mounting, and shifter mounting bolts.
2. Improper Cable Routing
The SRAM Force eTap AXS system uses a combination of wired connections for the rear derailleur and front derailleur, as well as a wireless connection for the shifters. Improper cable routing can cause kinks or excessive tension, leading to unreliable shifting or component wear.
Why This Happens:
Inaccurate routing of the cables can restrict movement or cause unnecessary friction, especially in tight spaces.
How to Avoid It:
- Follow the routing instructions in the SRAM manual precisely. Ensure that the cables follow the intended path with smooth bends.
- Avoid tight bends or pinching of the cables.
- Use high-quality cable housing to reduce friction and ensure optimal shifting performance.
3. Skipping Firmware Updates
Although the SRAM Force eTap AXS is a wireless system, it still requires firmware updates to ensure that it functions correctly. Skipping this step can result in shifting issues, such as delayed response or inconsistent performance.
Why This Happens:
Some riders neglect to update the firmware during installation, thinking that the system is already set up and ready to go.
How to Avoid It:
- Always check for firmware updates using the SRAM AXS app during installation.
- Use the app to configure and calibrate your system, ensuring all components are properly synced.
4. Misaligned Derailleur Hanger
An often overlooked installation mistake is misaligning the derailleur hanger. A bent or incorrectly installed hanger can result in poor shifting, chain drop, or even damage to the derailleur.
Why This Happens:
The derailleur hanger is an integral part of the system that supports the rear derailleur. If it’s bent or not positioned correctly, it can affect the derailleur’s performance.
How to Avoid It:
- Before installing the rear derailleur, make sure the derailleur hanger is properly aligned using a derailleur hanger alignment tool.
- Ensure that the hanger is straight and securely mounted to the frame to avoid misalignment.
5. Improper Battery Installation
The Force eTap AXS system requires a battery for the rear derailleur and front derailleur. Improper battery installation can result in power issues or malfunctioning shifts.
Why This Happens:
The battery may not be fully charged or properly installed, which can lead to the system not receiving the required power to perform optimally.
How to Avoid It:
- Charge the batteries before installation.
- Ensure the batteries are inserted properly into their respective mounts on both derailleurs.
- Double-check that the battery covers are sealed to prevent water or dirt ingress.
6. Not Setting Up the Shifting Prior to Riding
Once all the components are installed, it’s essential to perform a comprehensive check to ensure the shifting is functioning properly. Not setting up the shifting properly can lead to poor shifting performance or cause issues during rides.
Why This Happens:
Riders sometimes skip the final calibration step, assuming the system is good to go after installation.
How to Avoid It:
- Use the SRAM AXS app to perform the final adjustments and calibrations for the derailleur position, shifting speeds, and response.
- Check that the front and rear derailleurs are correctly aligned with the chainrings and cassette cogs.
- Perform a test shift to ensure smooth, responsive gear changes.
7. Ignoring Compatibility with Other Components
The Force eTap AXS system is designed to be compatible with a wide range of other SRAM components, but it is still important to check that your other drivetrain components are compatible with the Force eTap AXS system.
Why This Happens:
Sometimes, bike owners install the eTap AXS system without considering the compatibility with their existing cranksets, cassettes, or wheels.
How to Avoid It:
- Make sure that your chainrings, cassette, and other drivetrain parts are compatible with the Force eTap AXS.
- When in doubt, consult SRAM’s compatibility guide or a professional mechanic.
8. Failure to Test the System After Installation
After completing the installation of your Force eTap AXS system, it’s vital to test everything before taking it out on the road. Failing to do so could lead to poor performance or even safety risks.
Why This Happens:
Cyclists often rush through the installation, eager to ride, without doing a proper test.
How to Avoid It:
- Perform a full test of the shifting system, checking for smooth, consistent shifts across the entire gear range.
- Check for any issues such as ghost shifting, slipping, or unusual noises.
- Ensure that both the front and rear derailleurs shift smoothly without hesitation.
Conclusion
The SRAM Force eTap AXS system is a high-performance, wireless shifting system that can drastically improve your riding experience. However, to get the best performance from it, you must take care during installation to avoid the common mistakes mentioned above. By following the proper installation procedures, using the correct torque settings, and ensuring everything is properly aligned and calibrated, you can enjoy smooth, reliable shifting for years to come.