They are useful when the chain is tensioned, i.e., by a derailleur and the chainring, but are next to useless on a fixed or singlespeed set up.
Cheers. I thought they might be for hanging your chain on when changing a tyre or something. Mine is SS.
@fizzy.bleach 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.
Cheers. I thought they might be for hanging your chain on when changing a tyre or something. Mine is SS.