Mountain bike suspension analysis for four-bar linkages: rear wheel and instant center of rotation paths
- Add a bike picture (
.jpg
,.jpeg
) to the current directory - Run
python3 4bar_analysis.py
- Follow the instructions on the image
- The analysis plot
4bar_analysis.png
is saved to the current directory
- Automatic linkage configuration detection (linkage-driven single pivot, Horst link, Split-pivot, VPP, DW/Maestro link)
- Calculate linkage, rear axle and instant center of rotation positions based on main pivot rotation
- Plot rear axle and instant center of rotation paths
⚠️ Absolutely not accurate
(image source: https://www.santacruzbicycles.com/en-US/nomad)
- Python >= 3.7.1
- NumPy >= 1.15.4
- SciPy >= 1.1.0
- Matplotlib >= 2.2.2
- Calculate shock rocker mount path
- Calculate rear wheel/shock travel
- Plot leverage curve (rear wheel travel/shock travel vs rear wheel travel)