Derailleur
part · 1905 · Electric age
A mechanism that moves the chain between sprockets.
What it is made of
- Spring — has part. A tension spring.
Principles and materials it uses
- Roller chain — uses. It moves the chain across.
- Steel — is made of. A derailleur is steel.
Where it is used
- Bicycle drivetrain — is part of. Derailleurs.
- Mountain bike — is part of. Many gears.