Originally Posted by
TallRider
Thanks for the tip on super glue. I will use epoxy. The adhesive actually won't be under substantial stress - when there is tension on the cable, the cable head sits tight against the plastic surface. It's only when there is cable slack that the cable head can pop up, so I think the epoxy should be enough to hold.
As I've said before in my previous post, upon installation
the RD's return spring puts the cable under tension which seats the cable head onto the holder.
It does seem from the pics that the cable holder in the shifter is pretty scratched up. My old Sora shifters doesn't have this part fully exposed. The cable head goes thru a hole on the side with cable holder behind it, preventing it from slipping out when there is no tension on the cable.
Install the shifter, thread the cable, route it all the way to the RD, and clamp the cable on the mounting bolt. Keep the cable under a slight tension so the head doesn't slip off. Report back on what happens.