The Complete Handbook of Bicycle Chainrings

For too long, the humble chainring has been dismissed as a simple gear, a mere disc with teeth. But as any experienced mechanic will tell you, it is the primary interface between human power and forward motion, and its design dictates everything from shifting performance to drivetrain longevity. The Complete Handbook of Bicycle Chainrings treats this crucial component with the technical depth it deserves, moving beyond print ads and spec sheets to explain the 'why' behind the 'what'.

This handbook begins where engineering and practicality meet. You will learn the physics of the chain-drive system—why chain engagement, friction, and stiffness matter—and how they translate to concrete examples like the difference between a round ring and a narrow-wide ring on a 1x mountain bike. It provides definitive, neutral guidance on bolt circle diameters (BCD), crank interface standards, and chain line, ensuring you choose the correct part for a 9-speed commuter versus an 11-speed gravel race bike. The text is equally focused on the aftermarket, with a full chapter dedicated to the business of chainrings: how to build a service revenue stream, source private-label manufacturing, and position your offerings in a market dominated by a few major brands.

With step-by-step installation procedures, torque specs, and a trouble-shooting guide for the most common failure modes (chain suck, tooth wear, and crank incompatibility), this book is built for the workbench. It is an essential addition to the library of any bicycle professional or serious enthusiast who values precision and longevity over trend. If you want to understand and work with drivetrain components on a deeper level, this reference is your indispensable guide.