The Shimano CN-5701 [paid link] chain is a critical component of the 10-speed road drivetrain system, renowned for its reliability and smooth performance when installed correctly. However, even minor errors during installation can result in long-term drivetrain issues, poor shifting, and premature wear. Understanding these common mistakes is essential for ensuring optimal performance and drivetrain longevity.
Choosing the Wrong Chain Direction
One of the most overlooked aspects of installing the Shimano CN-5701 [paid link] chain is its directional design. Unlike symmetrical chains, the CN-5701 [paid link] has an asymmetrical plate profile specifically engineered for smoother front and rear shifting.
Installing the chain in the wrong direction compromises its intended shifting performance. The outer plates should face outward, aligning the logos on the chain to the exterior. When installed incorrectly, users may experience noisy shifting, lag during gear changes, and excessive wear on the chainrings and cassette.
Ignoring Proper Chain Length Sizing
Chain length plays a pivotal role in drivetrain efficiency and durability. A chain that is too long will result in slack, leading to poor shifting performance and increased chain slap. Conversely, a chain that is too short can place excessive tension on the derailleur and compromise rear shifting, especially in large-to-large gear combinations.
The Shimano CN-5701 should be measured using the big-big method (largest chainring and largest cog, bypassing the rear derailleur), then adding two full links. Skipping this step or guessing the length leads to inconsistent tension and may increase the risk of drivetrain failure under load.
Using the Wrong Chain Tool or Connector
The CN-5701 chain is designed to be joined with a specific Shimano connecting pin, not with reusable quick links from other manufacturers unless explicitly compatible. Attempting to join the chain using third-party tools or connectors not approved by Shimano can result in weak chain joints, leading to breakage under stress.
The use of a chain tool not designed for 10-speed chains may also result in deformed pins or side plates, reducing chain strength and potentially causing premature failure. Always use a 10-speed compatible chain tool and the Shimano-approved connecting pin to ensure a secure, durable installation.
Misalignment During Joining
Precision is crucial when pressing the connecting pin into place. A common error involves driving the pin at a slight angle, which can damage the inner plates and increase friction in that link.
A misaligned pin often becomes the stiff link that causes chain skipping, poor shifting, or chain drop. After inserting the pin, use a chain tool to break off the guide and flex the link laterally to ensure it articulates smoothly. Skipping this alignment check is a frequent source of post-installation drivetrain noise.
Failing to Check Chain Compatibility
The CN-5701 chain is optimized for Shimano 10-speed drivetrains. While it may fit on other 10-speed systems, compatibility in terms of width and shifting ramps varies between brands.
Installing this chain on a non-Shimano drivetrain, or mixing it with components like SRAM or Campagnolo without compatibility confirmation, can introduce drivetrain inefficiencies. This mismatch often results in skipping gears or irregular wear patterns on the cassette and chainrings.
Conclusion: Install Once, Ride Smoothly
Correctly installing the Shimano CN-5701 chain is foundational for achieving optimal shifting performance and protecting your drivetrain investment. From directional orientation and sizing to the proper joining technique, each step requires precision and attention to detail. By avoiding these common mistakes, riders can ensure that their drivetrain operates efficiently, quietly, and reliably over thousands of miles.