How to Install Your Ekar 13 RD Rear Derailleur at Home

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The Campagnolo Ekar 13 RD [paid link] rear derailleur is a precision piece of equipment designed to offer exceptional performance for gravel and road bike riders. Installing it correctly is crucial to ensure smooth shifting and optimize the longevity of your drivetrain. This guide will walk you through the necessary steps to install, adjust, and maintain your Ekar 13 RD rear derailleur at home.

Tools Required

  • 5mm Allen wrench
  • 2.5mm Allen wrench
  • Torque wrench (up to 10Nm)
  • Flathead screwdriver
  • Chain tool
  • Bicycle stand (optional)
  • Cable cutters
  • Chain checker tool (optional)

Installing the Ekar 13 RD Rear Derailleur

Before starting the installation process, ensure that your bike is clean, and you have the necessary tools at hand. Follow these steps to install your Campagnolo Ekar 13 RD rear derailleur correctly.

Step 1: Prepare the Rear Frame

Begin by ensuring that the rear derailleur hanger on your bike frame is aligned. Misalignment of the derailleur hanger can lead to shifting issues and cause unnecessary wear. If your frame has been recently painted or has any residue, clean it to avoid interference with the installation.

Step 2: Attach the Rear Derailleur to the Hanger

  • Position the derailleur on the hanger.
  • Use a 5mm Allen wrench to secure the derailleur bolt to the derailleur hanger. Make sure the derailleur is aligned parallel to the frame to avoid binding when shifting.
  • Tighten the bolt to the manufacturer’s recommended torque setting, typically around 10Nm. Be cautious not to over-tighten the bolt, as this can damage the frame or derailleur.

Step 3: Install the Chain

Before attaching the derailleur cable, it’s essential to ensure the chain is properly threaded through the derailleur:

  • Use a chain tool to fit the chain to the correct length based on your bike’s specifications.
  • Insert the chain through the jockey wheels on the derailleur, ensuring it runs in the correct direction. The chain should flow smoothly through the derailleur, with no kinks or binding.
  • Connect the chain ends using a quick link or a pin, depending on your chain type.

Step 4: Attach the Rear Derailleur Cable

  • Insert the derailleur cable into the cable entry port of the Ekar 13 RD rear derailleur.
  • Pull the cable taut and use the 2.5mm Allen wrench to tighten the cable clamp bolt.
  • Ensure the cable runs smoothly from the rear derailleur to the shifter, avoiding any sharp bends that could impede performance.
  • Leave enough slack to allow for cable movement but ensure the cable is not loose.

Step 5: Adjust the B-Screw and H-Limit Screws

The Campagnolo Ekar 13 RD has a B-screw adjustment that influences the derailleur’s position relative to the cogset. Proper B-screw adjustment is crucial for smooth shifting:

  • Adjust the B-screw to ensure that the derailleur is positioned correctly relative to the largest cog. If the derailleur is too close to the cogs, the chain may skip, or shifting may become rough.
  • Use a flathead screwdriver to adjust the high-limit (H) screw and the low-limit (L) screw. These screws set the limits of the derailleur’s movement, preventing the chain from overshooting the cogs.

Step 6: Install the Rear Derailleur Cable and Housing

  • Thread the cable through the derailleur cable housing and secure it in place.
  • Use cable cutters to trim any excess cable once the housing is properly installed.
  • Secure the cable in the housing using appropriate end caps, ensuring no frayed ends are exposed.

Step 7: Test and Fine-Tune Shifting

Once the installation is complete, it’s time to test the shifting performance:

  • Rotate the pedals and shift through each gear to ensure smooth transitions.
  • If shifting is not smooth, adjust the barrel adjuster on the rear derailleur or the shifter to fine-tune the cable tension.
  • Check that the derailleur moves freely across the cassette and the chain is properly tensioned. If the shifting feels sluggish or uneven, recheck your adjustments for cable slack or misalignment.

Common Installation Issues and Troubleshooting

While the Ekar 13 RD rear derailleur is a high-quality piece of equipment, improper installation or misalignment can cause performance issues. Here are a few common issues and how to troubleshoot them.

Issue 1: Chain skipping on the gears

  • Solution: This may be caused by incorrect derailleur alignment or improper B-screw adjustment. Double-check the alignment of the derailleur hanger and adjust the B-screw to ensure proper positioning of the derailleur relative to the cassette.

Issue 2: Difficulty shifting between gears

  • Solution: Check the cable tension. If the derailleur is sluggish or fails to move properly between cogs, adjust the barrel adjuster on the rear derailleur or shifter to improve cable tension.

Issue 3: Chain dropping off the largest or smallest cog

  • Solution: The high and low-limit screws are likely misadjusted. Make sure the derailleur cannot shift beyond the limits of the cogset. Adjust these screws using a flathead screwdriver.

Customizing the Ekar 13 RD for Better Performance

The Campagnolo Ekar 13 RD rear derailleur can be customized for improved shifting precision and better overall performance. Here are a few optimization tips:

  • Fine-Tuning Cable Tension: Regularly check the cable tension and adjust the barrel adjusters to ensure smooth shifting across all gears. Over time, cables can stretch, which may affect shifting performance.
  • Lubricating the Derailleur Jockey Wheels: Periodically lubricate the derailleur’s jockey wheels with a small amount of bike-specific lubricant. This reduces friction and enhances shifting performance.
  • Chainline Optimization: Ensure your chainline is aligned to reduce wear and improve efficiency. This can be done by checking the alignment of the chainring, rear cassette, and derailleur.

Compatibility with Other Drivetrain Components

The Ekar 13 RD rear derailleur is designed to work with Campagnolo’s 13-speed gravel-specific drivetrain. It is important to ensure compatibility with other drivetrain components, such as the crankset and cassette.

  • Cassette Compatibility: The Ekar 13 RD is compatible with Campagnolo’s Ekar 13-speed cassettes. Using a different brand or speed can cause poor shifting performance or complete incompatibility.
  • Chain Compatibility: Ensure that you use the Campagnolo 13-speed chain designed for the Ekar system. Using a different brand or speed chain may result in improper shifting and chain wear.
  • Shifter Compatibility: The Ekar 13 RD requires Campagnolo’s 13-speed gravel-specific shifters for optimal performance. Other shifters may not provide the correct indexing or cable tension needed for smooth shifting.

By following this guide, you’ll be able to install and adjust your Campagnolo Ekar 13 RD rear derailleur with ease, ensuring a smooth and reliable shifting experience on your road or gravel bike. Proper installation and maintenance will not only enhance the performance of your drivetrain but also extend the lifespan of your components.