Get a ballpunch and hammer and ding the tube slightly, if its ok for master frame builders it will probably be ok for you.
@Matt_B started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Get a ballpunch and hammer and ding the tube slightly, if its ok for master frame builders it will probably be ok for you.