Free Sample
The Complete Handbook of Bicycles
For Professionals, Businesses, and Serious Enthusiasts Who Need to Understand, Select, Maintain, and Profit from Bicycles
by Alumigogo Books
Chapter 1: Understanding Bicycles
A bicycle is a mechanical system engineered to convert human leg power into motion. At its simplest, it consists of a rider seated on a frame, pedaling a crank that rotates a chainring, which pulls a chain, which rotates a rear sprocket (or cassette), which turns a rear wheel. The rear wheel drives forward against the ground, and the front wheel follows, steered by the rider through handlebars. This basic system has remained recognizably the same for over a century because it solves the core problem with remarkable efficiency: how to move a person and cargo using only their legs.
Understanding bicycles requires understanding how these systems work together, how each choice about materials, geometry, and components affects the riding experience and maintenance burden, and what trade-offs are inherent in different designs. A bicycle is not a commodity product where one model simply performs "better" than another. Rather, different bicycles are optimized for different purposes, and fitness for purpose depends on matching the bicycle to its actual use.
The Frame: Structure and Geometry
The frame is the skeleton of the bicycle. It holds the rider, transfers power from the pedals to the wheels, and must be rigid enough to transmit force without flexing excessively, yet light enough to move easily. Frame materials include steel, aluminum, carbon fiber, and titanium, each with different stiffness, weight, durability, and cost characteristics. A steel frame is heavier but forgiving of impacts and easier to repair. An aluminum frame is lighter