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Old 10-19-09, 06:49 PM
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BlazingPedals
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For 40 mph, all you need is standard gearing and a downhill -- with a 700c wheel, a 53/11 gear, and 110 rpm, you'll be at 41 mph. If you want to hold those speeds, you'll need a big motor, a bigger chainring, and a full hard-body fairing.
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