What size prusik cord for 1 2 rope reddit.
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What size prusik cord for 1 2 rope reddit In general you want about a 3mm difference between the diameter of the rope you’re using and the accessory cord material but don’t really want to go much thinner than 5. Apr 21, 2021 · The Red-3 2-in-1 Prusik Positioning Lanyard for Climbing & Fall Protection - Static Kernmantle Rope 1/2 inch Diameter x 12 ft, 5,400 lb MBS - 2 Aluminum Safety Snap Swivels U. What size prusik cord should be used for a 1/2 rope? Fabiola Kshlerin ∙ . In my mind a prusik cord is 12" or so of cord specifically for the use of making a klemheist or a prusik hitch, commonly referred to as an autoblock, third hand, friction brake, prusik, and more recently a "hollowblock". I've used Vs with 1. Prusik is only for ascent, not descent. 2 micro cord and been ok, but at that point, prusik/taught lines work better Ideally cord can hold knots, and dyneema is too stiff and slick to do so effectively. Sewn runners have the benefit of being able to be used as full-strength anchors in a pinch. Softer cords are better because they cinch I use a short Sterling hollowblock for 99% of my friction hitch needs. 99 ($0. Pre-sewn loops of 6mm cord "specifically made" for rap backup loops are really silly. I have seen several guidelines, such as use cord no larger than 70% of the diameter of the rope being ascended, but truly Aug 11, 2017 · Various lengths and diameters of prusik cords, some better than others. Lvl 10. 3mm should be strong enough (120 lbs) for guylines while being large enough for lineloc minis, and potentially workable in terms The plastic and stitching makes a long rigid section which is a pain to position when wrapping around the rope (especially on shorter cords) also when winding up it gets in the way. 3mm epiCord blue prusik. What’s a good device to use? If prussic, what’s a good hitch to tie, and rope to use? I have a 10mm rope (but feels thinner than that) and the prussic cord I have doesn’t descend easily. However, I would be inclined to give the stick method Koa describes above a try rather than having to keep track of all those different sizes of cordage to Jul 24, 2015 · I have 10. If you use a Blake's Hitch, you can use the same diameter as the main rope. Going off the rule of 60-80% of the rope diameter for prusik diameter I‘m using a 4mm cord for Prusiks on the RAD line. Rigging Supply $38. 39 / Foot) the relative size of the cord to the rope is what matters. Cord diameter. 5mm or thinner cord is preferable. Mar 14, 2004 · It's frequently stated in communications to use 3 wraps. . Or more specifically a ~20+ft piece of cord tied to itself, usually for anchor making. However, I have clients with yards I can’t get my lift in and I dislike ladders. There are literally thousands of combinations of strand diameters, fibers, fiber treatments, cores/sheath, etc. 5mm glacier rope, for which 5. My only question is which rope to use? I don't want to use any 7mm climbing rope as my prusik. All that being said, on my KMIII max rope I like a distel using a 30"x 10mm Armor prusik. But if you use a VT, your going to want a rope a bit thinner. There's a massive difference. All else being equal a smaller cord for a friction knot, such as a Prusik, will grip better than a large one. It all depends on conditions: cord stiffness, cord diameter, cord type and moisture conditions. Based on these criteria, Dacron 1. It’s actually a pain I just need some gear help. For both the leader and follower the rope is a critical piece of equipment the entire day out. Just get 5mm cord and tie your own. in my experience 6mm or 7mm will work fine for a rappel backup autoblock on 10mm rope, but is too big to prussik on 8. For example, 6mm accessory cord is commonly used for prusik cords on 11mm climbing ropes. My questions are: Is 4mm safe and effective? What diameter cord are others using on the RAD line? Feb 20, 2011 · Generally, prusik knots work best if you use a smaller diameter cord than the rope you're tying to. I read somewhere that the prusik rope should be about 70% of the climbing rope, which is about 7 - 8mm for me. The key here is to select the right cord as not all accessory cords are created equal. It is generally recommended that the diameter of your prusik cord be 70% of the rope diameter, and no less than 50%. It will sometimes lock. Breaking strength isn't really a consideration in a scenario where you would be using prusiks, since even 6 mm has a breaking strength of >7 kN, and prusiks are The rule of thumb is "test it before you use it". Yes, thinner cord will lock up easier, and also be harder to unjam. Both members of the rope team depend on the integrity of the rope the entire day. See full list on bikehike. , so there's no possible way to know how a Prusik will behave given two arbitrary materials without testing it: there is no rule of thumb besides "test it" and anyone who says otherwise just hasn't come across the cords that make their Depends on what k or you use. S. The more wraps, the more friction and reliability of hold. 5 to 6mm. The climbing rope is a factor also in how well the Prusik operates. Aug 7, 2014 · Also, the method by which he arrives at a minimum Prusik cord size doesn't address certain issues. A third hand is a backup, that's easily inspected between uses, and only used for a short time during the day. 5mm dynamic rope. Hitch and Hitch cord combos are tricky. I've opted away from friction hitches and use the rope runner pro. Plenty of material for a third hand or improv rope grab for hauling, and easily paired with a sling for ascending. I also like that on my Tachyon Ash but also run a michoacan hitch with either a 30"x 9mm RIT prusik or a 30" x 9. org Mar 16, 2025 · For a 1/2 inch rope, a prusik cord with a diameter of 6mm to 7mm is recommended for a secure and efficient grip. However, I have some concerns about the strength of 4mm cord and its range of applications. When using friction knots, it's imperative that the cord making the knot have a difference in diameter from the rope of at least 3mm. I also read that stiffer ropes don't work well as prusik cord. I weigh roughly 201lbs. shuvarbvucvlwgqwjmjxakkswnauqabdubbxrsbgxjvojfem