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London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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brokebroadbeat
Saw a guy yesterday over Vaixhall bridge riding a bike with an arm spinning eliptical rotary machine thing setup connected to the cranks. Still had pedals and normal chain drive, with the spinners connected to the bottom bracket by a rubber belt. Odd thing, didn't seem to well suited to optimal bike control.