I don't normally drag the brakes.
Also it was left alone for... two days max.
@Howard Maybe. But then I should feel the lever getting spongy or something like that?
Was there's moisture in the place you store it for two days?
Nope, dry and cold.
Maybe crap from the road or something. Or rain running down the hose into the caliper and washing the dirt down onto the disc.
The caliper does look dirty.
@edscoble 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.
I don't normally drag the brakes.
Also it was left alone for... two days max.
@Howard Maybe. But then I should feel the lever getting spongy or something like that?