Shimano GRX 10-Speed

Part Number RD-RX400
Pull Ratio 1.45
Curve Coefficients 10.61, 1.118, 0.02307, -0.000461
Physical Low Limit 10.61
Physical High Limit 56.62
Pull Ratio Averaged Across Pulling Runs 1.431 +/- 0.030
Pull Ratio Averaged Across Relaxing Runs 1.460 +/- 0.008
Pull Ratio Averaged Across All Runs 1.445 +/- 0.036
Pull Ratio 95% Confidence Interval 1.409 to 1.481
Data Video https://youtu.be/DmpSMv3bTr8
Analysis Video https://youtu.be/4Bh7QUWcSew
Pull Curve
Pull Ratio Curve. Second smallest and second largest cog positions marked by dots

Runs

2024-06-14 17-47 Pulling

Raw Measurement Data
Data and best fit line, excluding points taken at limits

2024-06-14 17-54 Relaxing

Raw Measurement Data
Data and best fit line, excluding points taken at limits

2024-06-19 19-55 Pulling

Raw Measurement Data
Data and best fit line, excluding points taken at limits

2024-06-19 20-02 Relaxing

Raw Measurement Data
Data and best fit line, excluding points taken at limits

2024-06-19 20-11 Pulling

Raw Measurement Data
Data and best fit line, excluding points taken at limits

2024-06-19 20-19 Relaxing

Raw Measurement Data
Data and best fit line, excluding points taken at limits