Originally Posted by
cyccommute
There isn’t any need to protect the cable housing where it goes through the loop. As I stated above, there isn’t any ferrule that will pass through that loop anyway. The loop is only about 5mm wide and was designed to fit brake cable housing which was the only housing available when these were in wide use. 4mm derailer housing will work but the ferrules for those are wider than 5mm.
Try to fit a piece of either 4mm or 5mm housing in there and see how closely it fits.
It fits snugly. I was more thinking about the end that arrives at the top side where it just rests against the guide (there is no cable in place in the picture).
