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Clutch Derailleur
A clutch derailleur is a rear derailleur with a chain-stabilizing mechanism that resists unwanted cage rotation. By controlling movement […]
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Derailleur Hanger
A derailleur hanger is the interface that positions a conventional rear derailleur relative to the bicycle frame and cassette. […]
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Derailleur
A derailleur is a bicycle drivetrain component that moves the chain between sprockets or chainrings to select different gear […]
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Bosch
Bosch is a German engineering and technology company whose Bosch eBike Systems division develops integrated electric bicycle drive systems. […]
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Hub Spacing
Hub spacing is the width of a bicycle hub at the surfaces that contact the frame or fork dropouts. […]
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Hub Flange Spacing
Hub flange spacing is the lateral distance between the spoke flanges of a bicycle hub. Together with each flange’s […]
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Wheel Dish
Wheel dish describes the lateral position of a bicycle rim relative to the hub’s installation centerline. A correctly dished […]
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Firmware
Firmware is software stored within an electronic component that controls how its hardware starts, communicates, and operates. In modern […]
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Controller
An e-bike controller is the electronic power-control unit that converts battery energy into the precisely timed electrical currents required […]
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Avinox
DJI Avinox is the commonly used name for the Avinox e-bike drive system originally developed within DJI. Introduced in […]
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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 […]
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.