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What do you call the entire mechanical system that makes a bicycle rotate?
This is a bicycle and in the bottom left you have the mechanical system that makes the back wheel rotate. I am not just talking about the pedal, but the whole mechanical system, of which the pedal is just a part. Is there a name for the system (drive chain, pedal, etc.)?
The analogous thing for a car would be called a drivetrain:
the system in a motor vehicle which connects the transmission to the drive axles.
It seems from some googling that this word is also used for bicycles, for example see https://en.wikipedia.org/wiki/Bicycle_drivetrain_systems
