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5 comments
Thanks all, but I didn't actually find it difficult at all, knowing the bike now I could probably fit one in less than 10 mins.
Step 1, remove old cabling.
Step 2, remove the outer sheath that runs under the bottom bracket.
Step 3, with the bike upright, feed the cable through and its easily retrievable through the big hole under the BB. Rethread the protective sheath
Step 4, feed a cable from the back end of the bike through the chanstay and tie together with cotton.
Step 5, pull the cable through, takes a bit of patience to get out of the whole but was pretty easy.
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The suggestion I've read (unfortunately only after I'd pulled the internally routed brake cable out of my Cayo) is to get hold of some of the cable sheath that the fully enclosed cable systems (like the old Gore sets) use between the inner and outer. Thread that over the old inner before you pull it out, then put the new cable in through it. Might be tricky if your cables are frayed, but sounds like it should work otherwise.
A couple of tips here for internal cabling: http://www.bikeradar.com/gear/article/workshop-how-to-replace-internally...
My local CycleSurgery ummed and ahhed for the best part of a day then gave up and just glued a small runner to the underside of the bracket, I probably won't go back...
Is it a BB30 or similar?
I redid the cables on mine which had BB30 and I was able to take the chainset off and route the cables very easily as you have access to the middle of the frame.
otherwise you can tie a bit of cotton to the new cable and use a vacuum cleaner to pull the thread through, then use the thread to pull the cable
OR you can use a strong magnet at the cable exit to ping it out once you've threaded it
internal routing is ace until you have to fanny about with it.