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Why This Bicycle Needs Two Chains [video]

https://www.youtube.com/watch?v=NnSWDKfT7FQ

by zdw • 1 year ago

4 2 1 year ago

YO

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2

johnneville• 1 year ago

the organization behind the buffalo bicycle: https://en.wikipedia.org/wiki/World_Bicycle_Relief

eesmith• 1 year ago

Which also gives the explanation, for those like me who find it faster to read than watch a video:

[It is] a stronger, simpler, and more sustainable bicycle that addresses the critical mobility needs of communities where transportation is a significant barrier to accessing essential services. ...
This drivetrain consists of a switchable freewheel with two cogs, each paired with its own single-speed chainring and chain. Riders can easily switch between high gear for speed and low gear for climbing by back-pedaling half a turn, then pedaling forward.

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