noun
definition
The mechanism on a bicycle used to move the chain from one sprocket (gear) to another.
definition
The entire gearset on a bicycle with such a mechanism.
Examples of derailleur in a Sentence
As Brian's Birdy had a derailleur as well as a hub gear he promised to stay on one rear cog.
Brian tells of his temptation to use the derailleur when we passed him, but being the English gentleman, he resisted.
The difficulty and judgment of changing derailleur gears before a hill or after stopping is well known.
I'd ridden a shorter version on the same bike before it was changed from an 8-speed derailleur to the Rohloff 14-speed hub.
We notice REYES, kneeling behind him attending to the rear derailleur of her racing bike.
Grafting on the 2-speed derailleur of the 6-speed would add some versatility.
A long cage derailleur for combining a triple crankset with a 13-28 sprocket set or smaller.
Recently fitted with new derailleur, new freewheel and new chain.
The fx is significantly lighter than the older APB, especially with a two ring derailleur rather than a Sachs 3x7.
A short cage derailleur for combining a double crankset with a 13-26 sprocket set or smaller.
Never before has a shifter and rear derailleur been faster, lighter and more precise than the new SRAM X.0 system.