Trek
Summary Trek is one of the largest and most influential bicycle brands in the world, known for its commitment to innovation, in-house engineering, and a wide-ranging catalog that…
Velopedia Entries
An evolving encyclopedia of cycling brands, technologies, components, and history.
Oval Chainring
Summary An oval chainring is a non-circular chainring designed to smooth out pedaling dynamics by varying the gear ratio through the crank’s rotation. The goal is to improve…
Yeti Cycles
Summary Yeti Cycles is a high-performance mountain bike brand founded in 1985 and known for its deep racing roots, cutting-edge suspension platforms, and unapologetic commitment to aggressive trail…
Wolf Tooth
Summary Wolf Tooth is a U.S.-based cycling components manufacturer known for high-quality drivetrain parts, precision-machined accessories, and clever solutions to modern compatibility challenges. Built on a foundation of…
Cadence Sensor
Summary A cadence sensor is a device used in e-bike systems to detect when and how fast a rider is pedaling. It signals the motor to engage once…
Pedal Assist (PAS)
Summary Pedal Assist, often abbreviated as PAS, refers to a control system in electric bicycles where the motor provides power only while the rider is pedaling. It uses…
Torque Sensor
Summary A torque sensor is a device that measures the force a rider applies to the pedals and converts it into electrical signals to control motor assistance in…
Prepreg Carbon
Summary Prepreg carbon refers to carbon fiber sheets that have been pre-impregnated with resin, allowing for precise control of fiber-to-resin ratios and consistent mechanical properties during manufacturing. In…
Layup Schedule
Summary A layup schedule is a detailed plan that defines the number, orientation, and placement of composite fiber layers—typically carbon fiber—used in a bicycle frame or component. It…
Bladder Molding
Summary Bladder molding is a composite manufacturing process used to create hollow carbon fiber structures, most notably bicycle frames and forks. It uses an inflatable bladder inside a…
Resin Transfer Molding (RTM)
Summary Resin Transfer Molding (RTM) is a closed-mold composite manufacturing process that injects liquid resin into a mold cavity preloaded with dry fiber reinforcements. It offers excellent control…
Universal Derailleur Hanger (UDH)
Summary The Universal Derailleur Hanger (UDH) is a standardized derailleur mounting interface introduced by SRAM to simplify rear derailleur hanger compatibility across frame brands. It reduces the complexity…