Cable stop come off chainstay

graham1871
graham1871 Posts: 34
edited August 2013 in Workshop
I did try a search but nothing...

I've got a Focus Cayo, carbon frame, about 3 years old.

I'm not sure what it's called but there's supposed to be a bit of metal that holds the rear gear cable onto the chain stay... and it's sheared off. edit: the cable stop on the chainstay!
I'm sounding daft already.

There's a picture just here:
http://www.royals.org/focuschainstay.jpg

This happened while making some adjustments in the garden and shortly after taking the photo I found the bit of metal. Basically it's got two rivets that have rusted through but I don't know how it was attached other than the rivets. How do you attach alloy to carbon?!

I'm more than happy to replace bits of bike but I have no idea how to re-attach this and I'm wondering if the local bike shop would either?

Surely this must be a common thing? Any advice appreciated!

Comments

  • mattv
    mattv Posts: 992
    They are not really replaceable. They are usually rivetted on. Contact the manufacturer, see if it's under warranty. Otherwise speak to a local carbon frame repair place.
  • pinarellokid
    pinarellokid Posts: 1,208
    id just rivet it back on myself.. quick call to focus first just in case its covered under warranty wouldn't harm though
    Specialized S Works SL2 . Campagnolo Record 11spd. rolling on Campag Zonda wheels

    http://app.strava.com/athletes/881211
  • graham1871
    graham1871 Posts: 34
    As it was riveted on before, I guess it can be re-riveted? The part is intact and the holes are good. It would just need the debris drilled out, right? I don't have tools to rivet it back on but it sounds like something the bike shop should be expected to do for a bit of labour time?
    I got the bike from Wiggle years ago, I have a feeling that would be a long and difficult route trying to get Focus to fix. Wiggle aren't a dealer anymore.
  • pinarellokid
    pinarellokid Posts: 1,208
    go for it !!!!
    Specialized S Works SL2 . Campagnolo Record 11spd. rolling on Campag Zonda wheels

    http://app.strava.com/athletes/881211
  • graham1871
    graham1871 Posts: 34
    Bike shop said they won't touch it as it's a carbon frame.
    :(
  • proto
    proto Posts: 1,483
    Same think happened to my son's Pinarello. I sought advice from a carbon frame repairer and he suggested I just did it myself. Si I did.

    I cleaned up the cable stop back to bare metal. The cleaned up the area of frame where it sits with light emery cloth. Degreased it all, then glued it back on with epoxy resin, and re-riveted it back in place.

    Surprisingly easy to do, and it a perfectly good repair. It's what they do when they make the frames in the first place so not exactly groundbreaking stuff. Go to a different bike shop.
  • graham1871
    graham1871 Posts: 34
    Thanks for the info.

    I'm starting to think I might have to do this myself too.

    I have found a friend with a rivet gun.
    Did you have to drill the old rivets out?
    What kind of epoxy resin would I need?
  • keef66
    keef66 Posts: 13,123
    Very carefully drill out the old rivets. A Dremel might be easier to use than a full sized drill

    Don't be tempted to make the holes bigger / use larger rivets.

    Bog standard 2 part Araldite should do the job.

    And while you're waiting for it to set, take the chain off and give it a bit of a clean :wink:
  • slowbike
    slowbike Posts: 8,498
    I would think the cablestop is aluminium? If so, get a MONEL rivet - you may need to go to a boat chandlery for this - it won't corrode. If it's plain steel then just a normal rivet will do (test with a magnet - most steel can be tested that way). If it's stainless then a MONEL rivet would be advisable.

    A 2 part epoxy should be strong enough to hold it on by itself.
  • graham1871
    graham1871 Posts: 34
    Really appreciate all the advice - great stuff - thanks.

    I'm feeling a touch more confident about giving it a go now.

    Drill the frame and cable stop out to the same size as current.
    Emery cloth and clean up.
    Glue using Araldite 2 part epoxy.
    Wait for it to dry.
    Put in new Monel rivets and hope for the best.

    When I put that photo up I was just waiting for the chain comments!
    The cassette was clean though!

    Just need to get hold of that rivet gun and the right rivets and I'll report back...
    Thanks
  • MichaelW
    MichaelW Posts: 2,164
    If you apply rivets to the wet repair, you may get better compression on the joint.
  • graham1871
    graham1871 Posts: 34
    Well... much to my surprise that all worked out... successful repair... so thanks for the advice and encouragement!

    Worst bit was drilling into the frame but I drilled out the cable stop first and cable tidied that on nice and tight to use it as a guide on the frame. I did the rivets before the epoxy set as advised - makes sense to make sure the epoxy does it's job properly. Riveting was scary but seemed to work out ok.

    I also went round the edge of the cable stop afterwards with a fine line of epoxy to "seal it".
    It looked like the factory job when the bike was new didn't glue the top part of the cable stop and due to the curve of the chain stay it was exposed.

    All ok after a couple of rides.
  • keef66
    keef66 Posts: 13,123
    Ooh, I do like a happy ending!

Categories