Glossary

A glossary of bicycle and bicycle parts and their functions.

Derailleur

The assembly that "derails" or moves the chain from one sprocket to another, in order to change gears.

Dish

rear wheel hubs are often offset to allow for the freewheel assembly. Aka: "wheel dish."

Double butted spokes

Swaged spokes. The spokes are thicker at the ends than in the middle.

Dropouts

The slots in the frame and fork in which the rear and front wheels, respectively, are mounted.