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150mph on a bicycle requires a very large sprocket...
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 2010-11-13 10:32 AM |
Extreme Veteran 411  San Antonio |  Subject: 150mph on a bicycle requires a very large sprocket...http://jalopnik.com/5682223/a-porsche-a-bicycling-record-and-one-giant-sprocket czech it out This guy has some real cojones |
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