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  1. K

    Knots for joining two ropes for life support

    I must hasten to add a qualification to these "long" discussions of the finer aspects of knots : i.p., that they are made in an effort to gain understanding of what's going on, to advance knowledge. But NOT to suggest that knot tyers in general must know all of this. We don't now have all...
  2. K

    Knots for joining two ropes for life support

    Spiders have 8 legs (unless...) and two body sections : cephalothorax & abdomen. And they are neat-O !! Bugs have exposed wings; beetles' being beneath shell. And carpet beetles are amazingly good at getting free from web-based spiders! "a long read" :: Well, yes, but how does one convey a...
  3. K

    Knots for joining two ropes for life support

    Egadz, am I rusty at this or what? --control-S??? : new one, on me. So sorry, I usually strike out the more natural way. |-:
  4. K

    Knots for joining two ropes for life support

    Hi, I'm back around (looking futilely thRU the TreeBranches for a TreeSpyder, but all I see is Useless Knowledge?!). And I've now spent more than hour going through these now-seven pp. of knotty chatter, and exploring various supporting/conflicting other sources found on-lilne. <whew> + <sigh>...
  5. K

    #enough

    Coming forwards decades after a single incident of a high-school-aged boy at a party(?) who has otherwise only praise for his observed integrity is way different than many women coming out against say (my one-time hero) Bill Cosby or <quite a list, now> who as ADULTS used their positions of...
  6. K

    ? on what would be a good stopper knot

    I'm shocked! The rule of thumb is >>> 50 / fiftY % <<< not (sounds alike) 15%. (You're on the spot for finding much of any test data to come to your aid (angling knots excluded (and their testing often ignores real tensile of the material, usually way above nominal strength)). And for HMPE...
  7. K

    Knots.

    Has knot strength mattered much? There is are a couple symmetric forms of the Fig.9 knot, and one of these makes a fine-looking knot --secure when slack, moderately easy to untie (and to tie in the bight!). I believe the caver(?) Dave Merchant seemed a fan of the fig.9 eye knot as you show it...
  8. K

    Knots.

    I can't let "first discoverer" go by unremarked. How does one (ever) know who this is? (Then one can question how it matters.) And publishing isn't the same as discovering. (For an appallingly high degree, knots-book authors tend to copy prior books uncritically, especially for general-knots...
  9. K

    Service life of rigging slings and ropes

    IIRC, it was Black Diamond (some rockclimbing-gear provider) who did some testing of both nylon & HMPE (Dyneema, Spectra) slings/quick-draws brought down from walls after some time exposed. The short story is that, no, it's not black-&-white, but materials that looked really bad were, things...
  10. K

    What does that blocker knot look like going into the ring?

    My surmise :: Ashley's stopper, esp. if not really set hard --the overhand part, prior to tucking tail out--, will capsize/pull out; i.e., the tucked tail will be pulled out through a too-loose overhand part, which knot gets no tensioning by loading (and so why it must be set hard --now or...
  11. K

    The Alpine Butterfly vs. The Bowline... saga continues.

    Thanks for the testing. There are several notes to me made, but I've only time for some quick glances & double-checks and ... . <sigh> Firstly, your single bowline tested (@13:43ff, vs. the one-at-each-end) was dressed differently than the others, and in a way I'd much hoped to (sometime) see...
  12. K

    The difference between Moon Pies and Cheese Sandwiches, and the Origin of the MI Knot

    If your "Shannon"=>"Cowboy Up" knot is as Brocky has wonderfully illustrated, it's significantly different from what Mahk published in his Arborist News articles, and which one extant thread (of 2015, was it?) shows in that OP's start : they are of a hitch loaded on both ends, not just one, and...
  13. K

    The difference between Moon Pies and Cheese Sandwiches, and the Origin of the MI Knot

    History can be a muddy thing to try to see into --though one oft' hears that "hindsight is 20/20" ! Recently, "zeppelin knot" which had been attributed to one C.E. Rosendahl's insistence on its use ... , came into question when one of the authors noted that CER himself had responded to the 1976...
  14. K

    Ways to get a stubborn knot untied.

    Rather than water, try some vegetable oil --you want *slippery* ! I was once able to get the point of a hook into I guess what Tom would call a "Houdini spot" and use a 5:1 block & tackle to *convince* the material to move, after which everything became cooperative. You might need to employ...
  15. K

    Klemheist vs. Prussik

    The factors are numerous in both cases, and the tests are often quite simplistic. IIRC, Lyon Equipment did some testing of friction hitches many moons ago (ca. 2000), in which only the Prohgrip / Blake's hitch held --and did well, at that. (But I'm pretty sure that their set of hitches wasn't...
  16. K

    Favourite knot(s) for connecting 2 ropes for heavy loading

    Shucks, would be nice to see the welded knot! But I'll step in for Agent_Smith --who asked the pertinent question--, and confirm that you show the right knot. (Sometimes the knot is mis-presented, with the two ends turning in opposite directions, like the butterfly or #1425a.) Do you have any...
  17. K

    Guess the Knot

    Actually, with the tail qua main line (when taken away from the eye on the side that loading will draw it), and then the eye collapsed, the bowline = Ashley's stopper. The knot in question is the farmer's loop --a fun knot to tie, wrapping the line over the hand thrice, then jumping center wrap...
  18. K

    Guess the Knot

    And that's a dubious knot (esp. on relatively larger-diameter objects) which shouldn't see serious work! Because the fully loaded strand puts its force on the toggle part (the slip-bight) and can pull it through the "frame" it's toggled against. There is a simple variation to this carelessly...
  19. K

    Retiring carabiners after being dropped?

    [ QUOTE ] ... So if you have reason to believe that carabiner had been subjected to forces in excess of 22kn (for the average aluminum biner along its major axis), retire it. [/ QUOTE ] Or, maybe more likely, if the 'biner had been &gt;&gt;&gt; loaded abnormally (not along major axis...
  20. K

    High-mod fibers and aging, UV-degradation etc.

    [ QUOTE ] Aloha! I found information (or at least mentioning) on the Buzz about flex-fatigue here and there, but not really a thread to sum up info about physical properties of modern high-modulus fibers as Dyneema, Technora, Vectran, PBO etc., and especially information about aging and UV...

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