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Crossing over gear cables?

scale20scale20 Posts: 1,300
edited October 2012 in MTB workshop & tech
Called into a bike shop over the weekend to look at a Cannondale 29er and on looking under the down tube they had crossed over the bare inner gear cables. In all my time I have never come accross this, they said it gives slicker shifting, dont see how. Plus, surely it cant do the bare cable any good if they touch where they cross?

Am I missing something here or are they talking [email protected]?
Niner Air 9 Rigid
Whyte 129S 29er.

Posts

  • cooldadcooldad Posts: 32,599
    New one on me.
    I don't do smileys.

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  • supersonicsupersonic Posts: 82,708 Lives Here
    It gives a less tight route around the headtube.
  • nicklousenicklouse Posts: 50,675 Lives Here
    Very common and in many cases good practice as it can give better routing around the headtube.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
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  • cooldadcooldad Posts: 32,599
    You learn something new every day. Even if you know everything.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • scale20scale20 Posts: 1,300
    Hmm, never seen it before, thought someone had dropped one building it up!

    How does it affect the cables then? They touched where they crossed, over time wouldnt they wear down, possibly fray from all the rubbing and vibrating off eachother?
    Niner Air 9 Rigid
    Whyte 129S 29er.
  • nicklousenicklouse Posts: 50,675 Lives Here
    Makes no difference to them. They wear-out fast on the ferules. Like I said vey very common.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • bikaholicbikaholic Posts: 350
    edited October 2012
    As stated, criss-cross cable routing is nothing new or unusual (been doing it this way since the nineties) - it's the most desirable way of routing cables where the cables form smoother loops around the head tube.

    Also, if you do it right, you won't need to use frame protectors or patches.

    Most Specialized frames come with a stepped BB cable guide just so that criss-cross cable routing would be possible without them touching at the exposed sections.
  • a Lot of lapierre's have the same, a lot of people look at it the same was as OP, and to most it does look wrong, but is how they are, and have been as above for a long while,
    Timmo.
    After all, I am Cornish!
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  • jndb72jndb72 Posts: 629
    They were routed this way on my Specialized
    2011 Canyon Nerve AM 5.0
    2009 Specialized Rockhopper Disc

    I might have alzheimer's but atleast I don't have alzheimer's
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