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Motors, batteries, controllers, electronic drivetrains, and the integrated systems behind modern electric bicycles.
Technical entry
Bafang Mid-Drive
A Bafang mid-drive is an electric-bicycle drive unit that applies motor power through the chainring and bicycle drivetrain rather […]
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Auto Shift
Auto Shift is an electronically controlled function that selects bicycle gears without requiring a separate shift command from the […]
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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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Cadence Sensor
A cadence sensor detects crank rotation in an e-bike pedal-assist system. It tells the controller when the rider is […]
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Pedal Assist (PAS)
Pedal assist, commonly abbreviated PAS, is an e-bike control system that activates the motor in response to the rider […]
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Torque Sensor
A torque sensor measures twisting force within an e-bike’s pedal or drivetrain system. The controller combines this signal with […]
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Hub Motor
A hub motor is an electric drive unit built into the front or rear wheel hub of an e-bike. […]
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Mid-Drive Motor
A mid-drive motor is an e-bike drive unit positioned near the bottom bracket that sends rider and motor power […]
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.