The Campagnolo Record 12s chainring [paid link] is known for its durability, precision, and high performance. Replacing the chainring, however, can seem like a daunting task for even experienced cyclists. If done correctly, this process can significantly improve your bike’s drivetrain efficiency, shifting performance, and overall reliability.
In this article, we will walk through a detailed guide on how to replace your Record 12s chainring [paid link]. The guide includes step-by-step instructions for the removal and installation process, tips for maintenance, and how to optimize the new chainring for peak performance.
Tools Required
To replace the Record 12s chainring [paid link], you’ll need the following tools:
- Campagnolo chainring tool
- Torque wrench [paid link]
- Allen wrenches [paid link] (size 5mm and 6mm)
- Crank extractor tool
- Chain tool (optional)
- Lubricant or grease
- Clean rag
- New Campagnolo Record 12s [paid link] chainring
Step 1: Prepare Your Bike
Before starting the replacement process, it’s crucial to prepare your bike. First, place the bike on a stable work stand to ensure that the frame is secure during the process. If you don’t have a work stand, you can use a soft surface to prevent damage to the bike.
Next, remove the rear wheel and secure the drivetrain to prevent any unwanted shifting during the procedure. It’s also a good idea to clean the area around the crankset and chainring to avoid dirt getting into the components.
Step 2: Remove the Crankset
To access the Record 12s [paid link] chainring, you must first remove the crankset. Begin by using a 5mm Allen wrench [paid link] to loosen the crankset bolts. After removing the bolts, use a crank extractor tool to detach the crankset from the bottom bracket. If your crankset has a dust cover, be sure to remove that as well before fully removing the crankset.
Step 3: Remove the Existing Chainring
Once the crankset is removed, you will have direct access to the Record 12s [paid link] chainring. Using the appropriate Campagnolo chainring tool, unscrew the bolts that secure the chainring to the crankset. Ensure you keep track of these bolts, as you will need them to install the new chainring.
After all bolts are removed, gently take off the old chainring. If the chainring has been in use for a while, there may be built-up grime or debris around the teeth and mounting holes. Clean this area thoroughly before proceeding to install the new chainring.
Step 4: Install the New Record 12s Chainring
Take your new Record 12s chainring and position it correctly on the crankset. The chainring should fit precisely with the mounting holes. Be sure that the bolt holes on the new chainring align with those on the crankset.
Apply a small amount of grease to the chainring bolts to help prevent seizing and to ensure smooth removal in the future. Carefully insert the bolts through the chainring and into the crankset holes. Tighten each bolt by hand, ensuring the chainring is secured evenly.
Once the bolts are in place, use a torque wrench [paid link] to tighten them to the recommended torque specification. Campagnolo typically recommends a torque setting of 12-14 Nm for chainring bolts on the Record 12s crankset [paid link]. Make sure that the bolts are tightened in a cross-pattern to ensure an even fit.
Step 5: Reinstall the Crankset
Now that the new Record 12s chainring is securely installed, it’s time to reinstall the crankset onto the bottom bracket. Align the crankset properly with the spindle, ensuring it is positioned correctly. Insert the crankset bolts and tighten them to the recommended torque setting, typically around 40-45 Nm. If the crankset has a dust cover, reattach it at this stage.
Step 6: Check the Chainring and Drivetrain Alignment
With the new chainring installed and the crankset reassembled, the next step is to check the alignment of the drivetrain. Shift through all the gears, paying particular attention to the shifting performance of the front derailleur. The chain should move smoothly across the chainring without hesitation or rubbing.
If you experience issues such as the chain slipping or shifting inconsistently, it could indicate an incorrect installation. Double-check the tightness of the chainring bolts, crankset bolts, and the position of the front derailleur. Small adjustments to the derailleur position may be needed for optimal performance.
Step 7: Test Ride and Fine-Tune
Finally, take your bike for a test ride. Shift through all gears and monitor the performance of the new Record 12s chainring. Pay attention to any signs of irregularities such as skipping, poor shifting, or chain noise. If necessary, make slight adjustments to the front derailleur or chain tension for smoother operation.
Regular maintenance is essential to keep your drivetrain performing at its best. After installation, consider checking your chain and cassette for wear and ensuring the drivetrain remains properly lubricated.
Conclusion
Replacing your Campagnolo Record 12s chainring can significantly improve your bike’s performance and drivetrain efficiency. By following the steps outlined above, you’ll ensure a successful installation that enhances the smoothness and precision of your shifting.
Regular inspection and maintenance of the chainring are also crucial for extending its lifespan and maintaining optimal performance. Proper alignment, correct torque settings, and careful installation can help you avoid common problems and keep your bike running smoothly for years.