Thread: Dual drive system
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Old 09-07-12 | 09:19 PM
  #15  
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ThermionicScott
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Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)

If you looped one of the chains into a figure-eight, you could have a retro-direct. But that would disqualify you from the Single-speed forum...
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