Review: Performance and Durability of Ekar 13 RD Rear Derailleurs

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The Campagnolo Ekar 13 RD [paid link] rear derailleur is a key component in the growing popularity of gravel and all-road cycling. Designed for performance and reliability, this rear derailleur offers cyclists an excellent balance between precision shifting and durability under harsh conditions. In this detailed review, we’ll examine the installation, adjustment, maintenance, troubleshooting, optimization, and compatibility of the Ekar 13 RD to help you get the most out of your setup.

Installation of the Campagnolo Ekar 13 RD Rear Derailleur

Installing the Campagnolo Ekar 13 RD rear derailleur is a straightforward process if you follow these steps:

Tools Required:

  • 5mm Allen wrench
  • 2mm Allen wrench
  • Torque wrench
  • Screwdriver (for indexing adjustments)
  • Chain tool (for adjusting chain length)
  • Phillips screwdriver (for limit screw adjustments)

Installation Steps:

  1. Prepare the bike: Start by ensuring the bike is properly supported in a repair stand, with the rear wheel removed.
  2. Install the derailleur hanger: Make sure that the derailleur hanger is straight and securely installed on the frame. Any misalignment here can cause poor shifting performance.
  3. Mount the derailleur: Use the 5mm Allen wrench to bolt the derailleur onto the derailleur hanger. Tighten to the specified torque (usually 6-8 Nm).
  4. Attach the chain: Install the chain, ensuring it passes through the jockey wheels of the derailleur. The Ekar system uses a narrow-wide chainring, so ensure the chain is compatible.
  5. Set the derailleur in place: Use the 2mm Allen wrench to attach the derailleur’s mounting bolt securely to the frame.
  6. Final checks: Before reattaching the rear wheel, ensure the derailleur’s position is aligned correctly.

Adjustment of the Campagnolo Ekar 13 RD Rear Derailleur

Proper adjustment is essential for smooth and reliable shifting. The Ekar 13 RD requires fine-tuning in a few key areas:

High and Low Limit Screws

  1. Set the low-limit screw: Adjust the low-limit screw to prevent the chain from dropping into the spokes when shifting to the largest cog.
  2. Set the high-limit screw: Adjust the high-limit screw to avoid the chain shifting off the largest cog into the frame or derailleur.
  3. Indexing: Use a screwdriver to fine-tune the cable tension for precise indexing across all 13 gears. Make small adjustments to the barrel adjuster for smooth shifting transitions.

B-Screw Adjustment

  1. The B-screw determines the derailleur’s angle in relation to the cassette. Adjust it so that the derailleur jockey wheels are positioned at an optimal distance from the cassette.
  2. A properly adjusted B-screw prevents chain rub on the cassette and ensures consistent shifting performance.

Chain Length and Tension

Ensure the chain is neither too tight nor too loose. The Campagnolo Ekar system works best with a well-sized chain that maintains proper tension across the full range of gears. Use a chain tool to adjust the chain length if necessary.

Maintenance of the Campagnolo Ekar 13 RD Rear Derailleur

To ensure the longevity and optimal performance of your Campagnolo Ekar 13 RD rear derailleur, regular maintenance is crucial:

Cleaning

  • Jockey wheels: Clean the jockey wheels regularly using a soft brush and degreaser to remove dirt and grime buildup. This helps prevent poor shifting performance.
  • Derailleur body: Wipe the derailleur body with a damp cloth after each ride. If riding in muddy or wet conditions, clean the derailleur thoroughly with water and a degreaser.

Lubrication

  • Apply light lubricant to the jockey wheels, pivot points, and derailleur spring to keep them moving smoothly. Avoid over-lubricating, as excess oil can attract dirt.

Cable Maintenance

  • Inspect the shift cable for wear, rust, or fraying. Replace cables when they show signs of damage, as worn cables can affect shifting precision.

Inspection of the Cage and Jockey Wheels

  • Periodically inspect the derailleur cage for any signs of damage, such as cracks or bends, which can compromise shifting performance.
  • Ensure that the jockey wheels spin freely. Replace them if they become damaged or clogged with dirt.

Troubleshooting Common Ekar 13 RD Rear Derailleur Issues

Even with regular maintenance, you might encounter some common issues with the Ekar 13 RD rear derailleur. Here’s how to troubleshoot them:

Sluggish or Erratic Shifting

  • Cause: The most common issue with poor shifting is incorrect cable tension.
  • Solution: Adjust the barrel adjuster to fine-tune the tension. If the issue persists, inspect the cable for kinks or fraying.

Chain Drops

  • Cause: Chain drops typically occur due to improperly adjusted limit screws or chain wear.
  • Solution: Ensure the low-limit screw is set correctly, preventing the chain from shifting past the largest cog. Also, check the chain for wear and replace it if necessary.

Noise When Shifting

  • Cause: Excessive noise during shifting can be caused by misalignment of the derailleur or debris in the jockey wheels.
  • Solution: Check the derailleur hanger alignment and adjust the B-screw. Clean and lubricate the jockey wheels.

Customization and Optimization for Better Performance

While the Campagnolo Ekar 13 RD is a high-performing rear derailleur, there are a few ways to further optimize its performance:

Upgrading the Chain and Cassette

  • For smoother and more efficient shifting, consider upgrading to a higher-grade chain and cassette. This can reduce friction and improve overall drivetrain performance.

Fine-tuning the Derailleur Angle

  • Adjusting the angle of the derailleur can improve shifting accuracy. The B-screw, when set properly, ensures the jockey wheels maintain an optimal distance from the cassette, reducing chain noise and friction.

Choosing the Right Chainring Size

  • The Ekar system is designed to handle a variety of chainring sizes. For better climbing performance, consider opting for a smaller chainring paired with a larger cassette.

Comparison with Similar Models

The Ekar 13 RD rear derailleur stands out as a lightweight, efficient option for gravel and all-road cycling, but how does it compare to similar models?

Shimano GRX Di2 Rear Derailleur

  • The Shimano GRX Di2 is another popular choice for gravel cycling. While the GRX offers electronic shifting, the Campagnolo Ekar 13 RD uses mechanical shifting, which appeals to riders who prefer simplicity and reliability.
  • The Ekar 13 RD features a higher gear range (13 gears) compared to the Shimano GRX 11-speed system, offering a broader selection for diverse terrains.

SRAM Rival AXS Rear Derailleur

  • The SRAM Rival AXS is an electronic derailleur that shares some similarities with the Ekar, such as wide-range gearing. However, the Ekar system’s mechanical setup offers a simpler, less expensive alternative, while the Rival AXS has the benefit of wireless shifting.

Compatibility with Other Drivetrain Components

The Campagnolo Ekar 13 RD rear derailleur is part of the Campagnolo Ekar 13-speed system, which is fully compatible with the Ekar cassette and chain. Here’s a breakdown of its compatibility:

  • Chain: The Ekar 13 RD works exclusively with the Campagnolo Ekar 13-speed chain. Ensure that the chain is properly sized for your bike’s setup.
  • Cassette: This rear derailleur is optimized for the Campagnolo Ekar 13-speed cassette, which offers a wide range of gears, making it ideal for mixed-terrain rides.
  • Shifters: The Campagnolo Ekar 13-speed shifters are designed to work seamlessly with the rear derailleur, offering smooth and responsive gear changes.

Ensure that all components in your drivetrain are designed for 13-speed compatibility to guarantee optimal performance.