tundragumski said:Yes, it appears to be a fairly common problem - I have 105 shifters on my road bike and I'm quite worried now!
I've done about 1000 miles so far without problems but reading those other posts it seems that it can happen at any time!
Follow their advice and get Ultegra next time.
As the 105 shifters are triple chainset compatible; if you use them with a double/compact, should you be using the 1st and 2nd click or the 2nd and 3rd click?
Chris James said:From what I have read, the issue was with the double / triple shifters used on a double. And overshifting involving cranking up the cable tension too high.
I have a triple on my audax bike with 105 shifters and they have done 5000 miles and performed flawlessly.
Chris James said:From what I have read, the issue was with the double / triple shifters used on a double. And overshifting involving cranking up the cable tension too high.
I have a triple on my audax bike with 105 shifters and they have done 5000 miles and performed flawlessly.
My understanding is that it is still possible to shift the lever despite the stop preventing the derailleur cage moving, resulting in increased cable tension - too much for the plastic stop within the shifter.tundragumski said:what do you mean by cranking up the cable tension? Surely the shifters only work correctly when the cable tension is set just right. It would be impossible to have the cables tensioned too high.
tundragumski said:So pushing the lever too far then. I guess some people might be a bit heavy handed with them.
gouldina said:Well maybe but I still think that they shouldn't break. How would you feel if your car gear stick came off in your hand and you were told it was because you were changing gear too vigourously? It shouldn't break under those circumstances IMO.
beancounter said:On the other hand, I have exactly the same 105 triple shifter as you, used on a double chainring. Because I know how it works and how to shift it without breaking it, it hasn't broken in 3000 miles of use.
You, on the other hand, don't know how it works and you've broken two of them.
Is that therefore a design fault, a manufacturing fault or user error?
bc
gouldina said:Well I think it's pretty obvious personally but if it makes you feel good sure, it's my fault.