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Knots in the rope?
I've read the manual extensively and can't find anything that says you can or cannot put knots in your rope to assist with climbing. If no one knows, I'll just wait until the Q&A opens in four days.
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I didn't see anything about putting a metal ring on the end closest to the floor? Would that be legal? There is not a whole lot about the rope other than diameter and material and length.
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Those exact rules seem to give permission to have the last 4 inches as NOT flexible and being a exception to the requirements of the rope itself thus a ring allowed. I guess its a Q&A thing.
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The way I break it down is: -entirely of non-metal fibers -[that are] twisted, tied, woven, or braided together -except for the last 4 inches of each end, which may be whipped, fused, covered in heat shrink or tape, or dipped in a coating material to prevent fraying. Basically, you can make a rope out of non-metal fibers, and the whole thing needs to be together using legal methods, but in the last little bit you can add something to keep the whole thing from coming apart. The real question is, how does a splice count? |
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I think it's a bit of a stretch to classify a metal ring as a coating material though...
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in heat shrink or tape, or dipped in a coating material to prevent fraying.) A metal ring would no longer meet the listed criteria of being a "rope" and thus cannot be installed on the field. If you tied the end of the rope to a chair would you then be able to bring that chair on on the field? Why is a metal ring any different? |
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Hmmmm so can you tape the bottom of the rope with retroreflective tape?
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I believe a loop is legal so long as it meet the size constraints. 12" I think off memory. I would not consider tying a ring to it but a loop woven into it. I suppose I could accomplish the same thing by making a loop with the rope and adding a hard "anti fray" polymer coating. Not sure we even want do it but generating ideas. Thanks for your thoughts.
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Because the chair would violate i04-G |
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I still want to see how the GDC handles splices--I suspect they'd be considered "woven" or "braided", and if they're done right they can be nearly the size of the original rope, or thicker, depending on the type used. But they can be very stiff... |
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Anyway ask Q&A. |
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On splices...
As I read it, an "end cap splice" of up to four inches in length would probably be OK (though that would be rather short for 1" line). Slicing the rope along its length to another rope would require the splice to still be no larger than 1" in diameter (not too difficult if the line is 5/8" or smaller) would still be "braided" and allowed. Splicing a loop into the end of the line (unless it were very short and could all fit in 4") would not be a knot and would not be allowed. (Say the last part three times fast.) [Usual caveat that this is my opinion, not a Q&A answer.] |
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I can't help but think about this quote in rule I04, section D:
"consist entirely of flexible, non-metallic fibers twisted, tied, woven, or braided together except for the last 4 in. (~10 cm) of each end which may be whipped, fused, covered in heat shrink or tape, or dipped in a coating material to prevent fraying" Does anyone know of a "coating material" that can be magnetized? Just an idea. |
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Could you use a mettle crimp at the end of a rope to keep it from fraying.
"Consist entirely of flexible, non-metallic fibers twisted, tied, woven, or braided together except for the last 4 in. (~10 cm) of each end which may be whipped, fused, coveredin heat shrink or tape, or dipped in a coating material to prevent fraying." Would mettle all so be excepted for the last 4 inches? |
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Back on the knots subject, in case anyone hasn't done the math, it looks like the davit has about 22" of steel guide below where the attachment knot should go. So a knot in your rope should be about 7" below the steel channel of the davit. Not sure how far below the touchpad that puts you, but it's definitely close. I'm assuming y'all are thinking of regularly spaced knots and a notched pulley? |
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I want to add to this discussion that any of the modifications you can make to the last 4" of the rope must be in order to prevent fraying. This kind of thing will be inspected on a one by one basis, and if your rope has anything that the inspector deems not for the purpose of preventing fraying, they shouldn't allow it to pass inspection.
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The cam cleat would save some battery since it'd hold you in place passively, and it'd give you a 1s margin, since triggering the pad at T=0 and maintaining for 1s also scores. But staying up there after T=0 definitely isn't a requirement this year. |
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Regarding knots in the loop, are you allowed to make them in the provided rope, and not have it count as the custom rope for the alliance?
Any reference for an anwer? |
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*on-field inspections are not allowed and you can't remove the provided ropes from the field |
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I also agree that the field's rope cannot be knotted, as it is not inspectable. |
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I04 says "A Team must submit any ROPE they intend to use in a MATCH for Inspection."
Does "any" imply a team could have more than 1 custom rope? I see that you can only bring 1 rope onto the field, but I can't find anything that says you can only bring 1 custom rope to competition. |
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I think I'd kind of prefer inspecting someone's entire supply of ropes all at once instead of a rushed inspection of a replacement rope in the middle of Elims, honestly. |
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This means knots do CAN be >1 in wide as long as the rope making the knot is no bigger than 1 in wide. |
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