The Shimano CN-HG701 [paid link] chain is a high-performance 11-speed chain designed for road cyclists who demand reliability and smooth shifting. However, even the best components can fail prematurely or perform poorly if not installed correctly. Improper installation of the CN-HG701 [paid link] can lead to inefficient power transfer, noisy shifting, or even catastrophic drivetrain failure. This guide details the most common installation mistakes and offers technical advice to ensure your chain performs at its best.
Understanding the Importance of Proper CN-HG701 Chain Installation
The chain is a critical link in your drivetrain, transferring the power you generate to the wheels. With Shimano’s Sil-Tec coating and precise engineering, the CN-HG701 [paid link] offers optimized performance—only if installed correctly. A small oversight during installation can disrupt the chain’s intricate interaction with the cassette and chainrings.
Neglecting chain preparation steps, improper sizing, and incorrect connector pin use are frequent mistakes. As simple as it may seem, installing a chain demands attention to detail and strict adherence to manufacturer recommendations.
Tools Required
- Chain tool (compatible with Shimano chains)
- Chain checker gauge
- Quick link pliers (if using a quick link)
- Shimano original connecting pin or quick link
- Torque wrench [paid link] with appropriate settings
Common CN-HG701 Chain Installation Mistakes
Incorrect Chain Length
Cutting the chain too short or too long is one of the most common mistakes. A chain that is too short strains the rear derailleur and risks damage under load. Conversely, a chain that’s too long will sag, leading to sluggish shifting and increased wear on the drivetrain.
To determine the correct chain length:
- Wrap the chain around the largest chainring and the largest cog, bypassing the rear derailleur.
- Add two additional links to this length for proper tension.
Relying on guesswork or using an old chain as a template often leads to inaccuracies, especially if the previous chain was incorrectly sized or stretched.
Wrong Direction Installation
The CN-HG701 is directional, a feature that enhances shifting performance. The outer plates are designed differently from the inner plates. Failing to install the chain in the correct orientation compromises smooth shifting and increases wear.
Ensure the Shimano logos and model number are facing outward (away from the bike) when the chain is installed. This visual guide minimizes confusion and ensures the chain is optimized for Shimano’s shift ramps.
Improper Use of Connecting Pin or Quick Link
Shimano specifies that the CN-HG701 be joined using their dedicated connecting pin or the SM-CN900-11 quick link. Reusing an old pin or quick link can lead to chain failure under high torque.
When using the connecting pin:
- Push it through with a chain tool.
- Break off the guide section cleanly after installation.
If using a quick link, ensure it snaps into place properly with a quick link plier or by applying strong pedal pressure under load. An improperly connected link can lead to chain separation.
Skipping Chain Cleaning Before Installation
Although the CN-HG701 comes pre-lubricated with factory grease, it often collects contaminants during shipping and storage. Some riders skip pre-installation cleaning or degreasing, which can lead to a dirty drivetrain out of the box.
A light degreasing and re-lubrication with a high-quality chain lubricant ensures the chain runs clean and smooth. Skipping this step can result in accelerated wear of both the chain and cassette.
Forgetting to Check Chain Line Compatibility
While the CN-HG701 is compatible with most Shimano 11-speed drivetrains, ensuring chainline compatibility is crucial. Installing it on drivetrains not optimized for Shimano 11-speed setups can cause alignment issues.
Chainline problems can lead to cross-chaining, noisy operation, and rapid component wear. Always verify compatibility with the crankset and cassette before installation.
Failing to Verify Installation Before First Ride
Many riders skip the crucial step of verifying the installation. A quick inspection can catch common issues:
- Ensure the chain runs smoothly through all gears.
- Check for stiff links.
- Confirm the quick link or pin is secure.
Skipping this pre-ride check can lead to dangerous on-road failures.
How to Avoid These CN-HG701 Chain Installation Mistakes
Proper chain installation starts with patience and precision. Follow these steps:
- Measure carefully using the proper method.
- Observe the directional arrow and logo placement.
- Use new, Shimano-approved connecting links or pins.
- Clean and lightly lubricate the chain before installation.
- Double-check your work before riding.
Ensuring these steps will not only protect your drivetrain but also provide the crisp, reliable shifting that Shimano chains are renowned for.
Conclusion
Correct installation of the Shimano CN-HG701 chain is essential for maximizing drivetrain longevity and performance. Avoiding common mistakes—such as improper length sizing, incorrect direction, and misuse of connecting links—can save you from costly repairs and unsatisfactory ride quality. Whether you are a seasoned mechanic or a keen amateur, paying close attention to installation details ensures your chain delivers the silky-smooth shifting and durable performance it was designed for.