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Rope fuzz or core shot?

Discussion in 'Tech Tips and Gear' started by Drock, Sep 3, 2017.

  1. Drock

    Drock

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    I saw this area of 'fuzz' on my last trip and inspected today, curious if this is just fuzz or a core shot? This patch is about 9ft from the center of the rope. Appreciate any insight.

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  2. W.B.

    W.B.

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    No core visible? Not a coreshot.

    Looks suspect to me although it's hard to see just how much is involved with the fibers coming out like that at the angle of the photograph. Looks like it is possible that multiple entire fiber bundles in the weave are damaged. Note the direction of the weave and see how much of the sheath is damaged around the circumference. If enough of the bundles are damaged in a short section it can part unexpectedly. I had a rope somewhat like that and I used it for 10 or so trips without seemingly more damage and then it completely parted the sheath and slid down on the core. Was more exciting than I was expecting given that I had seen no progression in damage. Note that I never had the classic coreshot visible damage until the sheath failed entirely.

    I'd be careful. I'm not convinced that all sheath damage is easily judged from external review. Not worth the risk.

    My view is slight fuzz over short distance or even longer distance is usually ok, but complete or mostly complete fiber bundles broken for long distances and/or around the circumference is bad news.

    I would not trust this rope.
    Chasetharp likes this.
  3. Drock

    Drock

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    Thanks W.B.
  4. ratagonia

    ratagonia

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    Though I don't know exactly where, I'm pretty sure there is a coreshot in there somewhere.

    Congratulations. I think you now have TWO ropes, though both are shorter than the original.

    Tom
    Drock and spinesnaper like this.
  5. Bootboy

    Bootboy Atwood Gear

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    I've said it before, and I'll say it again:

    Canyoneering ropes never die, they just get shorter.


    Sent from my iPhone using Tapatalk
    Yellow Dart and Drock like this.
  6. Drock

    Drock

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    Yup, rope will be cut. Thanks Tom & Bootboy.
    ratagonia likes this.
  7. Outdoors24

    Outdoors24

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    A couple questions to go along with this. How can you tell if the rope has a core shot from looking at the sheath if no core is showing? Is it similar to how you check a climbing rope? I gather from the picture above that one way to tell is the amount of fiber bundles that are showing on a given area of a rope. Would the rope flatten out in the area that the core was damaged?
    Sorry for the noob question/questions. I took a beginner canyoneering course a couple of years ago and I am sure we talked about it, but over time I begin to second guess myself. So I figure it's good to come on here and become familiar with it again, or learn something new before I go back out to the canyons.
  8. ratagonia

    ratagonia

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    Perhaps the name is misleading, but a "coreshot" is where the sheath is damaged to the point where one or more sheath bundles are broken, making a little window into the interior of the rope, such that the core can be seen.

    It is not usual for the core to be damaged without the sheath being open at that point.

    A coreshot will "develop" - meaning, once started, with continued rappels it will get worse and run until it follows the diagonal all the way around the rope, at which point the sheath will often part, giving a two foot section of just core. Without a sheath around it, the core is not resistant to abrasion and/or cutting, and runs poorly through a rappel device.

    Tom
    Outdoors24 likes this.
  9. Outdoors24

    Outdoors24

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    That makes sense. Thank you!
  10. Chasetharp

    Chasetharp

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    Have a rope like this as well, worse perhaps, that I don't trust anymore. Good to see I'm not just overly paranoid. Considered keeping the rough section on the pull side, but knowing that it's more of a risk I will just have to cut it instead. @Amy K letting you know we will now have two short ropes like I have been wanting anyway!
    Rapterman likes this.
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