Have you tried putting pressure on other parts of the frame. If you have a cracked BB it would make a noise if you put pressure on the seat post for example.
@johan 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.
Have you tried putting pressure on other parts of the frame. If you have a cracked BB it would make a noise if you put pressure on the seat post for example.