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Technical entry
Free Shift
Free Shift is a Shimano e-bike function that allows a compatible electronic rear derailleur to complete shifts while the […]
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Wheelbase
Wheelbase is the horizontal distance between a bicycle’s front and rear wheel axles, normally measured with the wheels pointing […]
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Fork Offset
Fork offset is the perpendicular distance between a bicycle’s steering axis and the center of its front axle. It […]
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Brake Fade
Brake fade is a heat-induced reduction in braking performance. It occurs when brake pads, rotors, rims, hydraulic fluid, or […]
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Shimano Di2
Shimano Di2 is an electronic shifting platform that uses switches, digital communication, and motor-driven derailleurs instead of conventional shift […]
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Shimano E-Tube Project
Shimano E-TUBE PROJECT is a software platform used to configure, update, inspect, and service compatible Shimano electronic bicycle components. […]
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Brake Modulation
Brake modulation is the rider’s ability to make small, predictable changes in braking force after the pads contact the […]
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Mechanical Disc Brake
A mechanical disc brake is a bicycle braking system in which a hand lever pulls a steel inner cable, […]
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Hydraulic Disc Brake
A hydraulic disc brake uses a low-compressibility fluid to transmit pressure from a handlebar-mounted master cylinder to pistons in […]
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Evolution of Disc Brakes
Bicycle disc brakes use a hub-mounted rotor and frame- or fork-mounted caliper to create braking torque independently of the […]
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Idler Pulley
An idler pulley is a passive drivetrain component that redirects a bicycle chain without changing the selected gear ratio. […]
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High Pivot Suspension
High-pivot suspension describes a rear-suspension design whose fixed main pivot or moving instant center sits substantially higher than on […]
Read entryTopics intentionally overlap. A drivetrain component can also be a technology; an e-bike system can include components, software, and manufacturing concepts. Cross-listing keeps related reference material discoverable from more than one path.
Technical entries are one part of bicycle knowledge for the life of the bike. Discover bicycles in the Archive, use the Encyclopedia to understand them, then carry useful context into Bike Reports or My Garage.