Sam Coppens
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Bicycle Cleaning & Maintenance 101 - Cleaning the Bicycle Crankset or Crank System

Bicycle Cleaning & Maintenance 101 - Cleaning the Bicycle Crankset or Crank System

Adam Clark, 32 cleans a filthy chain on an old bike that a customer uses all year round. Clark has a mobile bike repair business that he started about three years ago and he covers Chicago from around 5500 south to the Evanston border. Photographed Thursday, March 29, 2012.

Adam Clark, 32 cleans a filthy chain on an old bike that a customer uses all year round. Clark has a mobile bike repair business that he started about three years ago and he covers Chicago from around 5500 south to the Evanston border. Photographed Thursday, March 29, 2012.