There's an awful lot of jargon in the bike world which needs busting! If there's a term you don't understand, search for the definition below. And equally importantly, we need you to help. So, if you think there's a glaring omission from Bikepedia or you are just bursting with knowledge why not contribute and share it with everyone?
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D
Derailleur
Simple device that pushes the chain sideways from one gear cog to the next. A rear derailleur is slightly more complicated as also has to compensate for the slack in the chain caused by changing gears.
Domestique
A rider on a cycling team whose main role is to support the team leader and keep him out of trouble.
Drafting
Cycling close behind another rider in order to take advantage of the fact they are making a hole in the air.
Drivetrain
The parts of a bicycle which have to do with generating forward motion. These include the pedals, cranks, bottom bracket, chain, derailers, rear sprockets and rear hub.
Drop Handlebar
A drop handlebar is most often found on road bikes built for speed or long-distance riding. They provide a range of different grip positions, allowing the rider to change positions for comfort and to adapt to different road conditions and gradients, and to create an aerodynamic position.
Dura Ace
Shimano’s top of the range componentry.
E
E-Cycle
Electronic powered (or part powered bicycle). Predicted to be the next big thing.
F
Fixed Wheel bike
A bike with only one gear and no freewheel or brakes. Originally the preserve of track racing but now favoured by couriers and others seeking a low maintenance option.
Folding bike
Type of bike made famous by Brompton. Ingeniously engineered bikes that not only fold up into a small size but are also efficient to ride.
Fork
The part of the frame which holds the front wheel and is made up of two blades which hold the wheel in place by way of skewer.
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