Prusik cord size chart Choose the Right Cord: A common rule of thumb is to use a cord with a diameter 60-80% of the host rope’s diameter (e. S. See specs for information on tensile strengths. The document has moved here. 100% Satisfaction Guarantee Oct 15, 2021 · Here’s how to tie a Purcell Prusik loop: 1. The prusik knot will slip under high load, avoiding the extreme impact forces of falls on more static tethers. Cord Black x M Nov 22, 2017 · The answer given to this question: What's the minimum diameter cord to use when climbing a rope using a prusik, states that you should use cord for prusiks that is 2mm smaller diameter than your rope, with a minimum of 5mm, but who on earth is ascending 7mm ropes with 5mm prusiks? Our collection of prusik cord has the best prices from popular brands like Teufelberger, Sterling Rope, and everything in between. Find out the best cord size, material and length for different ropes and conditions. The problem is that not all cord is equal. 8mm is a compromise between strength, how well it holds, how releasable it is and what load it will slip at. 0 – 7. Eye and eye prusiks and bulk prusik cord for tying your favorite climbing hitch. CMC's Prusik Cord has the right balance of suppleness for reliable activation but is not so soft that it wears out rapidly. 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. Clip carabiner through the loop. The best Purcell Prusik cord is strong enough to support a shock load but thin enough that it’s not too bulky or heavy—most climbers opt for cords ranging from five to eight millimeters. Accessory cords are designed and produced with the same construction methods and high quality yarns as our ropes. 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". The main advantages of Prusik Cord are: excellent balance between knotability and grip; superb abrasion resistance; torque free construction of 100% polyamide; smooth surface structure for high user comfort; Our Prusik Cord comes in diameters from 5 mm to 9 mm, each diameter version being available in two reverse light and dark patterns. 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. Top quality, great selection and expert advice you can trust. Learn about four types of prusik knots (friction hitches) for climbing and rescue situations. In general, a 6mm cord works best with the 10mm rope and a 5mm cord works best with the 8mm rope. Aug 7, 2014 · Also, the method by which he arrives at a minimum Prusik cord size doesn't address certain issues. Cord diameter. Our prusiks are available in 3 lengths to match your hitch and rope. Have them clipped to the back of your harness, they won’t get in the way and there’s barely any extra weight. 5m of rope. There is no "right answer" to this. All of these knots are shown in our How to Tie Climbing Prusik Video. Oct 9, 2019 · As a minimum carry two prusik loops created by tying a fisherman’s knot (two stopper knots back to back) in a 1. What is interesting about this pre-sewn prusiks cords is that it has a tensile strength of 3,200lbf, which makes it extremely strong. Skip to content FREE U. 5mm or thinner cord is preferable. You can buy a big length of accessory cord lik Dynamic Prusik cords were introduced to provide an added load absorbing element as part of a complete system. Best Practices for Using Prusik Knots. This does provide less grip when using thinner ropes, so generally, it is best to opt for a thinner cord. The rule of thumb is "test it before you use it". Jun 27, 2011 · Video by Tree Climbing Etc - The Purcell Prusik: a prusik-based lanyard that offers excellent adjustability and energy-absorption potential, with just a bit more weight and bulk than daisies. The Purcell Prusik System comprises three components: a Long foot Purcell Prusik, a Medium foot Purcell Prusik, and a harnesss or Short Prusik. Braided Sleeve; 6 Inner Strands; 1/16in Diameter; Rot Resistance; UV Fading Resistance; Durable; Made in the USA; 1/32 A0803201100 8mm Prusik/Acc. 2 – 1. Or more specifically a ~20+ft piece of cord tied to itself, usually for anchor making. NB Prusik loops are not suitable for self-belaying. Rope / Cord Specifications Description (Fiber Type), Diameter, Breaking Strength: CMC Prusik Cord and Load Release Hitch Cord (Nylon) 5 mm 7 kN (1,574 lbf) MBS 6 mm 8 kN (1,798 lbf) MBS 7 mm 8 kN (1,798 lbf) MBS 8 mm 16 kN (3,597 lbf) MBS 9 mm 16 kN (3,597 lbf) MBS Nov 4, 2016 · What diameter of cord is best? This depends on what ropes you normally climb on. Note: 2-7mm cords come in assorted colors. In some contexts, prusik is also used as a verb. Two color choices in both 7-mm and 8-mm diameters allow you to use a separate color for each length Prusik in a Tandem Prusik Belay System. The following questions and answers came from a training session at a large southern California fire agency, which was reading the standard closely. It can be used as an emergency ascender system, as a backup for a rappel, or to hold a rope during emergency rescue, as well as many other Jul 26, 2023 · A Prusik is a length of cord that forms a loop, wrapping around a rope so that the knot can slide over it and grip it as you climb. Cord Purple 200M A0803204001 8mm Prusik/Acc. The Prusik Knot is a versatile way of attaching a loop of cordage to a larger rope. To make a prusik loop, you generally need between 1. 7 kN; 8mm nylon cord - 14. The ideal cord for prusik knots applied in canyoneering, climbing, rescue, or arborist applications Prusik Cord strikes the perfect balance between firm and supple. Product Description. Cord Purple 100M A0803203200 8mm Prusik/Acc. Oct 16, 2019 · Use the prusik cord supplied to form into a loop and pass the prusik cord around your Tree Tether rope or Lineman’s rope. Aug 11, 2017 · The key to selecting a good prusik cord is to find something soft and supple. 5mm dynamic rope. 4. 3. The diameter of the cord should be 60-80% of the main rope diameter. The factory-sewn SecureStitchTM is covered with durable clear shrink tubing that allows Jul 24, 2015 · I have 10. Javascript is disabled on your browser. For example, the cord used by many rescuers for Prusik hitches has not been addressed. 4% @ 600 lbf = 29. Lay out your rope. What do you think the size of these should be. More posts you may like 5mm nylon cord - 5. Pass the cord around the rope three times inside the loop. ). Most prusik cord is 5 – 8mm thick, however, you can also use a thicker cord, especially alongside thicker climbing ropes. the relative size of the cord to the rope is what matters. The length of the Prusik cord should be around 1. To ascend, push the top prusik up the rope as far as you can, then sit back in your harness to rest your weight on it. 5 kN; 7mm nylon cord - 10. 1/16” Elastic Cord. The prusik knot is one of the most well-known hitches. 5m length of 5mm cord. 0 kN; 5. When using Prusik Loops for extended periods, make sure to inspect them every once in a while. The smaller the eye when you squeeze a bite the better. I read somewhere that the prusik rope should be about 70% of the climbing rope, which is about 7 - 8mm for me. , 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 The 100% nylon 8mm prusik cord has been specifically adapted from our 8mm accessory cord to be more supple [ed: emphasis added] and provide the best possible compatibility with rescue ropes in both 1/2? and the smaller 7/16? diameter. In addition to choosing the right material, selecting the appropriate Prusik cord length and diameter is crucial for the knot’s effectiveness. 60-80% of the diameter of the working rope is pretty standard for prusik sizing. The Prusik slides easily up and down the rope, but under force it will cinch down, supporting a huge amount of weight. The climbing rope is a factor also in how well the Prusik operates. 0 mm cord. Rope / Cord Specifications Description (Fiber Type), Diameter, Breaking Strength: CMC Rescue Prusik Cord and Load Release Hitch Cord (Nylon) 5 mm 5 kN (1,124 lbf) MBS 6 mm 7 kN (1,574 lbf) MBS 7 mm 10 kN (2,248 lbf) MBS 8 mm 12 kN (2,698 lbf) MBS 9 mm 17 kN (3,822 lbf) MBS Apr 14, 2023 · A prusik is a knot, also known as a friction hitch, that you attach around a rope in rock climbing, canyoneering, caving, or mountaineering. On buckles, the size measurement refers to the width of the inside of the slot (which is found on both ends of the buckle). It is used for countless projects such as DIY jewelry, gift wraps, home décor, bracelets, display cards, scrap-booking, name tags and masks. PRUSIK CORD TM. This will ensure proper grip. Available by the foot. This is especially true in rescue operations or when using different rope sizes. 7 kN; 5mm Maxim Tech Cord - 22. ] DetailsCMC Rescue AZ Bound-Loop PrusiksYears of development, testing and fine tuning has made our Prusik cord a preferred choice by rescue schools, agencies and rescuers alike. 2 to 1. Remove your finger and place the other end of the looped cord through the prusik. My only question is which rope to use? I don't want to use any 7mm climbing rope as my prusik. An 18″ Prusik loop will require 4′ of cord. To purchase please enter the number of feet in the quantity selection. Key Features: 100% Nylon • UIAA 102 Certified 7 mm (9/32”) MBS: 10. It all depends on conditions: cord stiffness, cord diameter, cord type and moisture conditions. When you attach the green prusik to the red rope, there should be at least a 1” gap from the bottom of the pulley to where the 6 parallel green strands are. Grips equally well on polyester and nylon ropes. According to CMC manual the burgundy cord is suppose to be 70” long and the green cord is 56” prior to tying the ends together. 5mm) and full single ropes. Our RIT 8mm and 9mm Bound Loop Prusiks and RIT Ring BL Prusik are the latest extension of that product and offer arborists durable, versatile tools for rigging, climbing and lanyard adjustment. Prusik Cord was designed to complement our existing line of climbing products. Alternately, tie the cord into a loop using a double fisherman's bend. Prusik Rope Length. 2. How long should a prusik loop be? I usually carry three loops: 2 short, around 30cm, and one long, around 120cm. Our sewn Prusiks offer unmatched performance—with strength equivalent to a tied Prusik loop, just without the cumbersome knot. A thinner line will lock hard, and a wider line will not lock at all. The top of the Figure of Eight loop on the Long one should reach the chest/nipple height of the rescuer; the top of the Figure of Eight loop on the Medium one should reach the rescuer’s iliac crest (top of hip bone. Make sure they lie neatly beside each other and pull the knot tight. Make an S-shape with your nylon cord, then compress it horizontally . Bluewater Dynamic Prusik Cord comes in diverse sizes, for example, 11-inch, 20-inch, and 44-inch; the size varies depending on your choice. Step 8 Having said that, many mountain guides recommend 6mm cord for prusiks as it slides more smoothly on 11mm ropes and allows a greater safety margin. Made of nylon with torque-free kernmantle construction, it comes in solid colors to help differentiate between cords designed for Prusik hitches and climber’s accessory cords. 5mm glacier rope, for which 5. Using a thin cord means it tightens easily around the rope and is difficult to move around. The tensile strength of accessory cord varies significantly depending on the manufacturer and diameter but in general falls in the 7 – 10 kN range for 6. Buckles Size Chart. It will sometimes lock. Please see the table below for maximum lengths available for order. 3% @ 1000 lbf = 40. To order odd lengths by the meter select 1 Meter and enter the number of meters in the Prusik Cord Thickness. As you stand up, slide the now unweighted top prusik up the rope. The 9-mm cord is the size preferred by rescuers who use cord for a load-releasing hitch. 1/16” Elastic Cord is dependable, tough and long lasting. The 9-mm cord is the size preferred by rescuers who use cord for a Load-Releasing Hitch. Please turn off your ad blocker. Cord Teal Green 200M A0803203001 8mm Prusik/Acc. I also read that stiffer ropes don't work well as prusik cord. Taking friction off your hitch by using a Figure of 8 descender below for longer descents can extend the service life of your cordage. 5mm The BlueWater 8 mm VT Prusik has a nylon core in an aramid sheath, making it an ideal climbing accessory for ascending, self-belaying when rappelling, or for use as a traveling rope grab. As a rule of thumb, the length of the accessory cord tied in a Prusik loop should be twice the length of the finished loop with one extra foot for knots. The Purcell can be purchased (from Sterling Rope) or easily tied from 6mm nylon cord. 8 mm prusik cord is available in four Mar 14, 2004 · The more wraps, the more friction and reliability of hold. Proper Wraps: Increase wraps on the Prusik for smoother ropes or when additional grip is needed. Softer cords are better because they cinch PMI’s sturdy 100% nylon prusik cord in standard colors to help keep your gear organized. EN564 DetailsSterling Rope 8mm Prusik CordThe 100% nylon 8mm prusik cord has been specifically adapted from our 8mm accessory cord to be more supple and provide the best possible compatibility with rescue ropes in both 1/2” and the smaller 7/16” diameter. This results in a smooth, controlled movement over the rope and greatly limits sheath slippage or milking. Two color choices allow you to use a separate color for each length Prusik in a Tandem Prusik Belay System. There are literally thousands of combinations of strand diameters, fibers, fiber treatments, cores/sheath, etc. 6-8mm Prusik available by the foot or in spools of 165' (50M). Cord Purple 50M A0803203100 8mm Prusik/Acc. However, I have some concerns about the strength of 4mm cord and its range of applications. 2-5mm Prusik available by the foot or in spools of 330' (100M). DetailsSterling AZ Bound Loop Prusik Rope - 8mmSterling created the bound loop prusik over 10 years ago as an innovative answer to bulky knots. The length chosen will depend on the specific use, but it should be sufficient to allow the climber to create the self-locking knot of his choice. 5 kN; 6mm nylon cord - 7. 5mm Dynamic Prusik Cord Available in: 60M Lengths in Brown or Blue Elongation: @ 300 lbf = 19. Prusik Cord Diameter Guidelines Sep 6, 2021 · What size cord should I use for a Prusik? Use a cord that is 5’ long and 2” to tie a Prusik loop. Look for slippage in the Double Fisherman’s Knot, wear in the cord, and check if the cord hasn’t become too stiff. Bungee Cord All Bungee Cord; 1/32" Elastic Cord Bracelet Size; Cord Comparison Chart; Buckle Comparison Chart Sheet Bend Square Knot Tripod-lashing Prusik Micro Cord (1/20" or 1. 75mm) Again, these sizes/diameters are approximate and vary slightly from manufacturer to manufacturer. Mar 11, 2025 · Prusik Cord Size. Step 7 Slide the unweighted bottom prusik up the rope and stand in the foot loop. [ed: I assume the '?' was supposed to be the symbol for inches, further compounding their sin of mixing units. 6. 18mm) Nano Cord (1/33" or . Aug 23, 2023 · That’s because a Prusik Knot doesn’t offer a permanent attachment point – it can always slip. Accessory and Prusik Cord 5 mm 6 mm 7 mm 8 mm 9 mm 550 Paracord Black Black Black After you have learned and mastered the basic 4 wrap prusik, we suggest learning the Distel and Swabisch knots, then the Valdotain Trusse. This set up is used in rope rescue as a belay system. Tips: Prusik loops should be made of a cord that about 60-80% the diameter of your climbing rope. Cord wraps through the slot when you make items. 8 kN when new, less than 10 kN after bending 500 times; Melting points The highest temperature I could imagine ever worrying about with climbing gear is the heat from rappel friction. (6mm cord works fine on thicker ropes but grips less well on thinner ropes). 2 and 1. 5mm BlueWater Titan cord - 13. We supply Prusik loop cords in Mammut or Beal climbing cord depending on availability. g. Cord Teal Green 100M A0803201200 8mm Prusik/Acc. Jun 20, 2012 · Many diagrams show the eight knot joining the ends overlapping (like a flemish bend, but with a third strand in the knot). In our Tree Climbing Systems Video we also show how to advance a prusik using a pulley and other techniques. A hitch cord for myself could last between 1 month to 3 months or more depending on how fast I want to descend thus glazing the hitch cord or if I left the hitch tied. , a 6mm Prusik cord for a 10-12mm rope). What would be the best diameter, 6mm or 7mm? Price History Chart Top 1% Rank by size . Choose your rope. The guide sling is used primarily for tying a load releasing hitch, however, the guide sling can also be used for any accessory rigging need (anchors, fall restraints, etc. At the end without the knot, tie a 3-wrap prusik around your finger. This item is a polyester jacket with a polyester core. 7 kN (2405 lbf) Weight: 29 g/m Yellow/Red Blue/Red Per Meter CC070UJ001S CC070UK001S 50 m Spool CC070UJ050S CC070UK050S 100 m Spool CC070UJ100S CC070UK100S 8 mm (5/16”) Prusik cords are available in different lengths. Our sewn cord products have become very popular as they Size 5/16" 3/8" 8mm 9mm 10mm Fiber Aramid HMPE Kevlar Polyester A simple and basic prusik cord. It is a high quality polyester cord that is soft and flexible with great gripping ability. Prusik is only for ascent, not descent. 8 mm Prusik Cord is orange. Selecting the Right Size and Length for Your Prusik Cord. Our larger cords have a very durable sheath and high MBS which makes them great for prusik cords, cordelettes, ice threads, and lightweight low-stretch fixing and hauling "tag" lines, but can also be used in non-life safety applications such as dog leashes, towlines, or even as decorative trim and cover. 5mm skinny ropes, but 5mm or 6mm works well on most normal ½ ropes (8-8. 0% Diameter: 6. Sep 14, 2020 · Our Prusik cord strikes the perfect balance between firm and supple. I have seen several guidelines, such as use cord no larger than 70% of the diameter of the rope being ascended, but truly What lengths of prusik cord I need for different purposes I was trying to find that perfect length for 3rd hand backup prusik cord, but I found that they should be smaller than my other prusiks. Accessory Cord Guide-Slings – One of the primary uses for 8mm Accessory Cord is the prusik loop and the 25-30 foot guide-sling. Cord is sold by the foot. These use-specific cords have a firm, yet supple hand and will hold higher loads before slippage than traditional accessory cords. Flexibility: A good Prusik cord should be flexible enough to allow the Prusik knot to be made easily, yet rigid enough not to slip under load. SHIP $199+ | $10 OFF $100+ WITH CODE SAVE10 Aug 24, 2024 · So, even though the sewn ones are slightly nicer to work with we've decided to go back to knotted accessory cord. com. They'll move freely and easily on the line, but when a strong force or friction is applied to the end of a rope, the friction induced by the knot will create load-bearing tension to safely and securely hold a Shop for Prusik Cord at REI - Browse our extensive selection of trusted outdoor brands and high-quality recreation gear. Generally a 4mm prusik is best on 7. CMC Prusik Cord and Load Release Hitch Cord. Placement Matters: Now the hard work begins. You don't have to buy a presewn Prusik loop for rock climbing, canyoneering, caving, or other rope adventures. Thus one needs another system to unload the stuck Prusik. The term prusik describes the loop of the cord used to tie the hitch and the hitch itself. Our 6-9 mm cords are built with the right amount of softness, yet are durable for anchor building, prusik use and other life-safety applications. All else being equal a smaller cord for a friction knot, such as a Prusik, will grip better than a large one. 5 meters. We have engineered the prusik cord so that the rope has enough give to grip the rope, but not be so mushy that the knot locks up. Cord Purple x M A0803203050 8mm Prusik/Acc. You will be able to slide the prusik up or down the Moved Permanently. Read See relevant content for southeastclimbing. ) Looking to buy some cord for a prusik. The colors shown in the photo are just examples and are not indicative of what we have in current stock. rxvhzs zdpmgf mosug hjxgh ctvbogr bllf tmja pylisc puso ovsmoao sqcs doaxct fbzsgb cqhh arka