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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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@miro_o
38x13 is ~78 gear inches.
Which is high.
Build a wheel around a track hub and either dish it, or fit a new bottom bracket to tune a good chainline. UTFS and you'll find lots of info about converting a road frame to fixed as it's how most people used to start out.