Debunking the Cross-Chaining Myth

Cross-chaining has long been labeled a cycling no-no. Cyclists often criticize those who find themselves in the big chainring with the large sprocket or the small chainring with the small sprocket. But is this practice really as detrimental as it seems? To shed light on this topic, we consulted the experts at Shimano and SRAM.

Understanding Cross-Chaining

So, what exactly is cross-chaining? In a double chainring setup, it occurs when a cyclist uses either the small chainring with the smallest sprocket or the big chainring with the largest sprocket. This setup forces the chain into a harsh angle, creating additional tension and strain.

Should You Cross-Chain? Opinions Diverge!

Opinions on cross-chaining vary widely. Some cyclists believe it leads to inefficient pedaling and accelerated component wear. Shimano's product team doesn't mince words, stating that cross-chaining results in "a loss of efficiency in your pedal stroke and increased wear out." Yet, they acknowledge their groupsets are built to perform even when cross-chaining occurs.

On the flip side, SRAM's Road Product Manager Jason Fowler and Chief Engineer Anthony Medaglia argue that the performance impact of cross-chaining is minimal, especially in everyday riding conditions. They emphasize that it rarely affects overall riding speed significantly.

Gear Combinations and Efficiency

The debate about efficiency continues. Many believe cross-chaining creates unnecessary friction, reducing pedaling efficiency. However, Measuring actual efficiency losses relates to specific gear combinations and riding conditions. Medaglia explains that factors like rear derailleur tension and gear adjustments play vital roles in drivetrain performance.

Does Cross-Chaining Accelerate Wear?

Critics of cross-chaining claim it causes uneven load distribution which could lead to quicker wear on the chain and components over time. Interestingly, SRAM's Product Manager JP McCarthy states that cross-chaining has minimal impact on chain wear, except when using a small/small combination.

Big vs. Small: Which is Worse?

The debate about whether using the big chainring with the big sprocket is more damaging than the small chainring with the small sprocket continues. SRAM finds the big-big combo acceptable, but warns against small-small choices. Shimano also maintains that neither is definitively worse, though optimal efficiency typically favors the big chainring and sprocket.

The Role of 1x Systems

For those with a 1x drivetrain, there’s no such thing as cross-chaining. SRAM emphasizes that these setups are designed to handle the entire cassette range without the issues seen in traditional configurations.

Are Electronic Drivetrains Superior?

When it comes to handling cross-chaining, electronic drivetrains may have the upper hand. Shimano explains these systems can limit problematic gear combinations, which helps manage cross-chaining more effectively. Some recent updates have even relaxed previous restrictions, allowing riders access to all gear options.

The Bottom Line: Is Cross-Chaining Really So Bad?

Ultimately, the consensus seems to be that cross-chaining isn't as dire of an issue on modern drivetrains. Both SRAM and Shimano have designed their systems to cope with cross-chaining in a way that minimizes adverse effects. While it does have some impact, it's relatively minor during normal road riding. So, the next time you find yourself cross-chaining, don’t sweat it too much!