I have a new-to-me ~80's steel frame with a rear derailleur cable that is routed through the chainstay. There's a blockage close to the BB end, and I'm wondering what my options are?
My assumption is that it's mud/dirt/etc. due to where it is, the fact that I cannot blow air through at all, and what it sounds when I jab it with a coat hanger.
This frame means a lot to me, so I'm very keen to get it working if I can.
- The frame is a (I believe) 1981 Concorde Acquila.
- The chainstay holds a bare inner cable.
- And pictures added (more for Criggie, rather than solving the issue, though if click through and zoom in on the second picture you can see the exit-hole on the chainstay)