 You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more
So this 10 speed shifter came on a bike I bought in June and it has never shifted as well I would like. I just assumed it was because 10 speed were harder to setup then 9 and 8 speed (first 10 spd bike).
Today it decided to turn itself into a 9 speed shifter so I decided to open it up and this what I found.
[img] 
[/img]
Now I know this is a relatively small job to fix just a new gear cable but I've never had it happen before and just wondered how common it is?
Dunno about 10 speed but I have seen it a few times on older shifters.
That is very cool. Never seen exactly that, I had a single strand of gear cable snap at the mech end then get drawn up into the cable outer so that from the outside, everyting looked lovely and with no load on the cable was smooth as silk, but load it up and it all went horrible- very tidy in its sabotage.
I'd have a look to see if you can find where it started, there might be a burr or similiar somewhere that's frayed the cable.
You were spot on Northwin
I removed the cable and found that a single strand had snaked itself up about halfway down the cable outer.
[img] 
[/img]
It must have then just bunched up in the shiftier more and more as it was used turned out all that bunched up wire cable was just a single strand.