On a bike, Whats a crank?

[SuperTroopah]

Whats a crank on a bicycle? Excuse me if this is a stupid question but I know nothing about bikes I'm just wondering.

 

[smoothie]

Its the main part of the drive system. Its where the pedals are connected and the main sprocket(s).

 

[dazedandconfused]

that is the thingy that is between the the two thingies you put your feet on

 

[bundygil]

The bars that the pedals are attached to. These are connected at the other end to the sprocket to drive the rear wheels by the chain.

 

[bundygil]

The bars that the pedals are attached to. These are connected at the other end to the sprocket to drive the rear wheels by the chain.