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Changing Internal cables help needed.

  • 15-11-2014 8:21pm
    #1
    lizzylad84
    Registered Users, Registered Users 2 Posts: 1,422 ✭✭✭


    Today, while changing the cables on my bike, I foolishly removed the cable from the rear mech without considering how I was going to thread the new one through. Does anyone have any tips as how I can sort this out? Bike is a giant trinity if that makes any difference


Comments

  • #2
    WillyFXP
    Closed Accounts Posts: 833 ✭✭✭WillyFXP


    Usually you would attach a thread or string to the old cable and pull it out, then use the string to feed the new one through. If you have a compressor you could use this to blow a string through so you can pull the cable through with it.


  • #3
    mirrormatrix
    Registered Users Posts: 637 ✭✭✭mirrormatrix


    Just push it through? You should be able to use a bent piece of wire as a hook to pull the cable out at the far end. I had no problems using this method with my bike.


  • #4
    pablo3090
    Registered Users Posts: 8 ✭pablo3090


    Feed a thread in one end and keep pushing it in as much as you can, then get the hover and put it at the other end and suck out the thread,


  • #5
    macnab
    Registered Users, Registered Users 2 Posts: 1,505 ✭✭✭macnab


    Sometimes I find it helpful to dip the end of the cable into nail varnish, when it drys it prevents the cable from unwrapping and snagging.


  • #6
    harringtonp
    Registered Users, Registered Users 2 Posts: 2,569 ✭✭✭harringtonp


    Was surprised how much easier than expected it was to thread an internal cable. Did have some problems getting it through at the rear mech but turned the bike upside down and that made it a bit easier.


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  • #7
    t5pwr
    Registered Users Posts: 256 ✭✭t5pwr


    Arts Cyclery give some pretty good tips in their ask a mechanic section and what they do when the cable is pulled out towards the end



  • #8
    seamus
    Registered Users, Registered Users 2 Posts: 68,317 ✭✭✭✭seamus


    t5pwr wrote: »
    Arts Cyclery give some pretty good tips in their ask a mechanic section and what they do when the cable is pulled out towards the end
    The last part where he just casually tells you to use a lathe to file down the spoke, just reminded me so much of this:
    https://twitter.com/simpsonsqotd/status/314667081352237056


  • #9
    Mr Rubicon Conundrum
    Registered Users, Registered Users 2 Posts: 100 ✭✭Mr Rubicon Conundrum


    How often should cables be changed for Gears and Brakes, I have Tiagra levers and DR's, with at least 10,000kms on them, should I be changing the cables? If so, can any one recommend which ones to use?


  • #10
    seamus
    Registered Users, Registered Users 2 Posts: 68,317 ✭✭✭✭seamus


    Changing cables is kind of a "how long is a piece of string" question. If they look in any way frayed or rusted, they need to be replaced. Otherwise I'd generally say once a year or once every 5,000km, whichever comes first.

    What cables to use is almost a religious argument. Expensive quality cables can feel like complete crap if they're not installed correctly and cheap cables correctly installed can operate as well as any other.

    Decent outer cables are more important than decent inners. You'll see sets of cables online for upwards of €50. You should not be paying more than €20 for a full set of inners and outers (that's €20 max for a brake set and the same again for gears). Even €20 is pretty expensive.


  • #11
    Kalman
    Banned (with Prison Access) Posts: 233 ✭✭Kalman


    20euros is expensive >>>>>shop around!
    seamus wrote: »
    Changing cables is kind of a "how long is a piece of string" question. If they look in any way frayed or rusted, they need to be replaced. Otherwise I'd generally say once a year or once every 5,000km, whichever comes first.

    What cables to use is almost a religious argument. Expensive quality cables can feel like complete crap if they're not installed correctly and cheap cables correctly installed can operate as well as any other.

    Decent outer cables are more important than decent inners. You'll see sets of cables online for upwards of €50. You should not be paying more than €20 for a full set of inners and outers (that's €20 max for a brake set and the same again for gears). Even €20 is pretty expensive.


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  • #12
    Type 17
    Registered Users, Registered Users 2 Posts: 2,731 ✭✭✭Type 17


    You'll only need to change cable if they become stiff (water ingress) or damaged - my city bike gets parked indoors at home and work and has full-length mudguards, so not much spray gets into the cables, and the (good-quality, Shimano) cables are still working perfectly after 22 years.


  • #13
    Mr Rubicon Conundrum
    Registered Users, Registered Users 2 Posts: 100 ✭✭Mr Rubicon Conundrum


    Thanks all, for the replies.


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