Originally Posted by
Lombard
It has nothing to do with cable routing. The cable frays and breaks inside the shifter. It has to do with the way the shifter is designed wrapping the cable in a tight circle inside the shifter.
Yeah. Mine isn't frayed.
I presume if you haven't had this problem in the miles you say, you probably ride mostly flat areas where you aren't doing a lot of shifting.
Oh god no. I have hills to go up and down in every direction from my house. Can't get away from them. The damn town I live in is in a valley. I have to climb to get out of it no matter which direction I go. And then once I get out...nothing but hilly terrain in every direction.
The problem is actually worse on newer Shimano shifters. Once they went to under the handlebar shifter cable routing, they had to redesign the shifter to make it wrap the cable tighter
And it wasn't a certain run or lot. Multiple generations of STI shifters have this problem from the 5700/6700/7900 generation and forward. I experienced it on both my 6800 rim brake shifters and on my 5800 hydraulic disc brake shifters. Different bikes. And I have seen others have the problem as well with different bikes.
I must be lucky. We don''t have this problem on our road bikes. Clearly I can't be the only one not having a problem.