http://www.ebay.co.uk/itm/24mm-Clincher-Tubular-Carbon-Road-Bike-Rims-700c-High-Quality-Cycling-Rim-20-5mm-/272336334863?var=&hash=item3f6882b00f:m:mfBZd0aA0X7QF3jDTuSxIQg
Clinchers heavier than my alloy rims. The builder is replacing the rim though, with washers to avoid the same fate.
Clinchers for show, tubs for pros
@dbr 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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http://www.ebay.co.uk/itm/24mm-Clincher-Tubular-Carbon-Road-Bike-Rims-700c-High-Quality-Cycling-Rim-20-5mm-/272336334863?var=&hash=item3f6882b00f:m:mfBZd0aA0X7QF3jDTuSxIQg