Bike gear calculator. Every gear as a ratio, gear inches, development, Sheldon gain ratio or speed, with range and gear gaps.
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Updated
Oct 9, 2026 - JavaScript
Bike gear calculator. Every gear as a ratio, gear inches, development, Sheldon gain ratio or speed, with range and gear gaps.
Interactive bicycle drivetrain simulator: chain physics, catenary slack, chain wear, skid patches and a fixed-gear chainring/cog finder (TypeScript + Canvas)
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