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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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@ArbenZ
48 x 15=86″ is ideal for adult riders, a slightly higher ratio around 90 gear inches is preferred for racing
50-14 gives me 93.9"
51-14 gives me 95.7"
Chris hoy uses 52-13/14 depending on event