I have an Ultegra RD-R8000 (GS cage) that has chewed up multiple shifter cables (Dura Ace and Jagwire) at the cable bolt. Seems that when in a high gear (11t chainring) the cable bends over the clamp edge and starts to fray there. Have any of you all found a fix for this? I really don't like replacing cables every 2000 miles. What the heck kind of bad design is this?!
UPDATE: Added close up pic of clamp verifying correct install.
So for now, maybe my solutions are:
- Try Jagwire non-teflon coated cable.
- Verify correct torque while tightning bolt.
UPDATE2: Well guys, just to close the loop on this I emailed Shimano customer service and sent very close up photos of the derailleur. They responded:
"After reviewing your case with our QA team we have found there may be an issue with your pinch bolt and that it may getting over torqued due to a bad plate. Manufacturing side not user caused. We will be sending you a new chain, derailleur, and a cable set kit."
I had heard about this design issue and that there was a correction of sorts on another forum and it seems that it is true. Hopefully anyone else with a similar issue can obtain this same level of service and support from Shimano.
Thank you all for your input and help with this.