bn:01227433n
Noun Concept
Categories: Bicycle gears, Bicycle drivetrains, All articles that may contain original research
EN
derailleur  derailer  derailleur gears  front derailleur  rear derailleur
EN
A derailleur is a variable-ratio bicycle gearing system consisting of a chain, multiple sprockets of different sizes, and a mechanism to move the chain from one sprocket to another. Wikipedia
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EN
A derailleur is a variable-ratio bicycle gearing system consisting of a chain, multiple sprockets of different sizes, and a mechanism to move the chain from one sprocket to another. Wikipedia
A variable-ratio transmission system commonly used on bicycles Wikipedia Disambiguation
Bicycle component that moves the chain across the front sprocket wheels to change the gear ratio. OmegaWiki
A mechanism for moving the chain from one sprocket to another to change gears on a multi-speed bicycle. OmegaWiki
Bicycle component that 1) moves the chain across the rear sprockets to change the gear ratio, and 2) takes up chain slack caused by moving the chain to a smaller sprocket at the rear or front sprocket. OmegaWiki