The Campagnolo Record 12s [paid link] rear derailleur is a high-performance component designed for precise, quick, and smooth shifting. Whether you’re installing a new derailleur, fine-tuning adjustments, or performing regular maintenance, proper setup is key to achieving optimal performance.
This guide will cover step-by-step installation, adjustment techniques, maintenance tips, and troubleshooting common issues.
Tools Required [paid links]
To install and maintain your Campagnolo Record 12s [paid link] rear derailleur, you’ll need:
- Allen wrenches
- Torque wrench (for precise tightening)
- Phillips screwdriver
- Chain tool
- Cable cutters
- Lubricant and degreaser
- Clean rag
Step-by-Step Installation Guide
1. Preparing Your Bike for Installation
Before installing the Campagnolo Record 12s [paid link] rear derailleur, ensure that:
- The derailleur hanger is aligned using a derailleur hanger alignment tool.
- The chain is properly sized for a 12-speed drivetrain.
- The cassette and chainrings are clean and free of debris.
2. Mounting the Derailleur to the Frame
- Locate the B-tension screw on the derailleur. Turn it counterclockwise to move the derailleur slightly forward for easier installation.
- Align the derailleur’s mounting bolt with the hanger and tighten it using a 5mm hex key [paid link] to 8-10 Nm torque.
- Ensure the derailleur pivots smoothly and is securely attached.
3. Connecting the Shift Cable
- Shift the ergopower shifter to the highest gear (smallest cog).
- Route the shift cable through the cable housing and into the derailleur’s cable anchor.
- Pull the cable taut and tighten the anchor bolt with a 2mm hex key to secure it.
4. Attaching and Sizing the Chain
- Wrap the chain around the largest cassette cog and front chainring.
- Adjust the length so there’s enough tension when the derailleur is in the largest cog without overstretching.
- Use a chain tool to remove excess links and connect the chain using a 12-speed quick link or Campagnolo chain pin.
Adjusting the Campagnolo Record 12s Rear Derailleur
Proper adjustment ensures precise and crisp shifting across all 12 speeds.
1. Setting the High and Low Limit Screws
The limit screws prevent the chain from shifting beyond the cassette.
- High Limit Screw (H-Screw): Adjust to ensure the jockey wheel lines up with the smallest cog.
- Low Limit Screw (L-Screw): Adjust so the jockey wheel aligns with the largest cog without overshifting.
2. Fine-Tuning the B-Tension Screw
The B-tension screw controls the gap between the upper jockey wheel and the cassette.
- Turn clockwise to increase the gap for smoother shifting.
- Turn counterclockwise to reduce the gap for faster response.
3. Indexing the Shifting
- Shift through the gears and check for smooth transitions.
- If the chain hesitates or skips, use the barrel adjuster near the derailleur to fine-tune cable tension.
Routine Maintenance for Longevity
Maintaining your Campagnolo Record 12s rear derailleur prevents premature wear and ensures consistent performance.
1. Cleaning and Lubrication
- Wipe the derailleur with a clean rag to remove dirt.
- Use a degreaser on the jockey wheels and pivots.
- Apply a small amount of lubricant to the jockey wheels and pivot points.
2. Checking for Wear
- Inspect jockey wheels for excessive wear or buildup.
- Examine the derailleur cage for bends or misalignment.
- Ensure shift cables are not frayed or stretched.
3. Inspecting the Hanger Alignment
A misaligned derailleur hanger can cause poor shifting. Use a hanger alignment tool to check for straightness and adjust if needed.
Troubleshooting Common Issues
1. Shifting Feels Inconsistent or Slow
- Check cable tension and adjust with the barrel adjuster.
- Inspect cable housing for dirt or friction points.
2. Chain Skipping on the Cassette
- Ensure the cassette and chain are not excessively worn.
- Adjust the B-tension screw for proper jockey wheel positioning.
3. Noisy Shifting
- Clean and lubricate the derailleur pivots.
- Verify proper chain length and tension.
Comparing the Campagnolo Record 12s with Other Models
The Record 12s sits between Super Record 12s [paid link] and Chorus 12s [paid link] in Campagnolo’s lineup.
| Feature | Record 12s | Super Record 12s [paid link] | Chorus 12s [paid link] |
|---|---|---|---|
| Material | Carbon & Alloy | Full Carbon | Alloy |
| Weight | ~ 216g | ~ 181g | ~ 232g |
| Performance | High Performance | Pro-Level [paid link] | Mid-Range |
If you’re looking for lighter weight and enhanced materials, the Super Record 12s [paid link] might be a better option. However, the Record 12s provides near-identical performance at a more affordable price.
Final Thoughts
The Campagnolo Record 12s rear derailleur delivers smooth, precise, and fast shifting when properly installed and maintained. By following this guide, you’ll ensure your drivetrain runs at peak performance, reducing wear and maximizing efficiency.