New 52 tooth chain ring and crank arms on Powertrek Dynamo photo

david chilvers | all galleries >> Galleries >> e-bike > New 52 tooth chain ring and crank arms on Powertrek Dynamo


30-JAN-2010	Dave Chilvers

Upped the size of the chain ring from 48-52, couldn`t get a larger chain ring at the right price with the square tappered drive fitting.

Canon PowerShot G9
1/60s f/3.2 at 7.4mm iso400 full exif

other sizes: small medium large original auto

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