Turn frame upside down, take out bottom bracket. Pour in a can of coke, full fat or diet, leave over night, repeat as necessary.
@Poppy started
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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Turn frame upside down, take out bottom bracket. Pour in a can of coke, full fat or diet, leave over night, repeat as necessary.