Originally Posted by
gearbasher
I've owned 5 (still have 4) Italian frames with cable routing through he top tube. All had an internal tube (conduit) that the cable ran through. One was designed so the outer housing was also routed through the top tube .With all the others just the inner cable ran through. All I needed to do was feed the cables through one end and out the other. This doesn't mean yours is the same. I never trusted French bikes.
Okay, it looks like this is designed with an internal conduit. The outer housing ends at the entrance to the tube. For a test, I tried running another brake cable in alongside the existing brake cable, but it didn't fit. A derailleur cable DID fit, and on three tries, it always popped out the other end. So it looks like there is an internal tube running all the way through. Phew..... Thanks!
