expanding foam will just fill down the tube, you'd need to fill the entire tube with it before you might make a difference... which you wouldn't...
@Nahguavkire 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.
expanding foam will just fill down the tube, you'd need to fill the entire tube with it before you might make a difference... which you wouldn't...