1. What is SRAM Transmission Chain Length?

The SRAM Transmission chain length formula calculates the optimal chain length for SRAM Eagle Transmission drivetrains. Proper chain length ensures smooth shifting and optimal drivetrain performance.

2. How Does the Calculator Work?

The calculator uses the SRAM Transmission chain length formula:

Where:

• \( \text{Chainstay} \) — Chainstay length in inches
• \( \text{Chainring} \) — Number of teeth on chainring
• \( \text{Cog} \) — Number of teeth on largest rear cog
• \( \text{Adjustment} \) — Additional links needed (usually 0-2)

Explanation: The formula accounts for the chain path length based on your bike's chainstay length and gear sizes, with an optional adjustment factor.

3. Importance of Correct Chain Length

Details: Proper chain length is critical for SRAM Transmission systems to maintain correct tension, prevent premature wear, and ensure precise shifting performance.

4. Using the Calculator

Tips: Measure your chainstay length accurately in inches, count teeth on your chainring and largest cog. The adjustment is typically 0 for most bikes, but may need to be increased for certain frame designs.

5. Frequently Asked Questions (FAQ)

Q1: How do I measure chainstay length?
A: Measure center of bottom bracket to center of rear axle, in inches.

Q2: What if my frame has unconventional chainstay length?
A: Some frames may require additional links - consult with SRAM or your frame manufacturer.

Q3: Does this work for all SRAM drivetrains?
A: This formula is specifically for SRAM Eagle Transmission systems.

Q4: What happens if chain is too long or short?
A: Too long can cause poor shifting and chain slap; too short can damage drivetrain components.

Q5: Should I round up or down?
A: SRAM recommends rounding to nearest whole number, with quick link positioned optimally.