Vt prusik vs hollow block weight. This thread/stitch combination .

Vt prusik vs hollow block weight Aug 16, 2019 · The “VT prusik”, invented by canyoneering expert Rich Carlson, is increasingly popular with SAR teams and riggers. 386 (diagram 310) of AK's Down. The unique hollow-braid construction gives it greatly increased gripping ability over traditional nylon cord when used for a prusik or klemheist knot on ropes that are 7mm in diameter or larger. Oct 25, 2022 · For normal rap backup 13. Sep 21, 2020 · Back to oplux or rescue tech, that is 8mm rope. 8 mm HollowBlock 2 loop is a friction hitch and autoblock that can be used as a prusik or Klemheist knot on ropes 7 mm or larger. Teams operating in remote environments with longer ingress/egress distances often favor lighter weight, multi-purpose systems and devices as The 6. Hollow Block Size. Overall length: 83 cm (33 inch) Moved Permanently. The test series included both slow pull examinations as well as drop testing. 8 mm HollowBlock2 is made of 100% Technora® fiber for increased abrasion resistance and improved durability. The prusik loop or prusik rapp Jun 6, 2017 · Dakota, of Live Rogue, walks you through one way to rappel with a personal backup. 14-16. The best way to gain specific training in uses of the VT Prusik is by attending a workshop. It’s gripping ability comes from the unique hollow-braid construction, for use as a prusik or Klemheist knot on ropes 7 mm or larger. The HollowBlock2 is Sterling's best-selling friction hitch and autoblock ideal for rappel backup. And, while James Bond might use shoelace, Traddad uses 6mm cord or a nylon sling for his friction knots. Key Benefits • 100% Technora Construction The VT Prusik can be used in so many ways that it is impossible to show them all. Made with aramid fiber and sewn with Sterling's proprietary sewing pattern, this ultra-strong cord is designed to provide excellent griping power on climbing ropes with diameters of 7mm or larger. The VT Prusik seems to be the eye-loop equivalent of the hollow block, made with aramid sheath to prevent melting. 292. 8mm x 13. With decorative hollow blocks, complex finishing work is no longer needed. ” However, after his tragic passing in a climbing accident in 1963, the local Alpine club named the new friction hitch the Machard Knot, or the French prusik knot. A prusik has tons of different uses!! here is how 3 different versions of the same thing work. Apr 29, 2023 · Origin of the Autoblock. A Prusik that Grabs! The Sterling HollowBlock prusik loop is made from 100% super durable & heat resistant aramid fibre. . Oct 14, 2020 · I tend to use the Prusik (what you're calling the classic Prusik) but that's because I've determined that two wraps with that knot is the proper level of friction for the rope and rappel device I climb on the most. 5 mm / 5/16~1/2 inch (Dia. The HollowBlock comes in two lengths: a 13. The 6. That led to Bluewater vt-prusik cordage and getting a custom length. The VT performs well when used for ascending, self-belay while rappelling, as a traveling rope grab, or in conjunction with a Prusik minding pulley in haul systems. Made with aramid fiber and sewn with Sterling’s proprietary sewing pattern, this ultra-strong cord is designed to provide excellent griping power on climbing ropes with diameters of 7mm or larger. The Technora® fiber material also provides increased abrasion The 6. Sep 17, 2020 · I like the VT Prusik better, but they both function well for an autoblock imho. If it ever did lock up, I would just raise one leg, wrap the free lower end of the rope around my foot two or three times, and stand up on that foot -- thus take the weight off the prusik knot. It's slightly thicker (making it less likely to jam in the pulley) and the eyes allow you to use an asymmetric Prusik. always great to have back ups just in case any of them fail which does happen so check it before/ after each canyon Prusik or Prusik cord is a shorter loop of cord specifically used for friction knots. The VT hitch knot-pass technique is described on p. Wear and tear from friction means that climbers tend to keep a particular sling just for this purpose that can also be used in progress-capture in hauling systems or belay escapes. Apr 26, 2019 · Smart climbers use a prusik, AutoBlock or klemheist hitch as a back-up when they rappel. The design is based on similar user-configured hitches from the arborist trade. May 31, 2025 · GM CLIMBING 8mm SEWN-EYE VT Prusik Hitch Cord, 30″ and 45″ in length, yielding 29kN / 6500Lbs Basket MBS, and made of 100% high tenacity Polyester with CNC machine sewn eyes at ends. 5in is designed to function as a pre-sewn prusik or climb heist. The HollowBlock will grip ropes from 7mm in diameter & upwards. The VT Prusik is a significantly better product, for only slightly more money. Nov 19, 2021 · Built from Sterling's RIT 900 cord, the Hollow Block 6. As always, this article is intended to help clear any confusion and is not meant to be the only source teaching you how to use these tools. Tie friction hitches with more bite and heat resistance compared to nylon climbing cord. A narrow nylon sling is better than dyneema (spectra). Used to tie: Symmetric Prusik, Asymmetric Prusik (Schwabisch/Distal), Valdotain Tresse, French Prusik. Jun 1, 2016 · The Sterling HollowBlock is a handy tool for climbers and guides. If I'm climbing with a different rope and/or rappel device, I'll do more/fewer wraps or switch knots to get the right level of The VT Prusik is a very versatile open-end Pruisk. Manufactured by: BlueWater Ropes 209 Lovvorn Road Carrollton It's gripping ability comes from the unique hollow-braid construction, for use as a prusik or Klemheist knot on Our bestselling friction hitch and autoblock has been redesigned with a stronger aramid fiber. Overall length: 33″ This research was conducted over the course of multiple testing sessions spread out over approximately 18 months. Slings don’t work quite as well but it’ll help you get out of a tricky situation. Mar 1, 2022 · By weight, I think it is the single most useful piece of kit you could have on your harness. The Prusik knot and Klemheist knot for a rappel backup are both great choices, but there are some key differences to consider. The Good The Bite. 5 out of 5 stars. 400x200x200. 16-18. Made of Technora® fiber for increased abrasion resistance and improved durability. The VT performs well when used for ascending, self-belay while rappelling, as a traveling rope grab or in conjunction with a Prusik minding pulley in haul systems. The VT Prusik can be utilised to tie a range of friction hitches, including: Valdotain Tresse (VT), Asymmetric Prusik (Schwabisch/Distal), French Prusik, and Symmetric Prusik. We have the tan in 7 mm & 8 mm and the black VT prusik in 8 mm. At the time, Machard called his new invention the “spiral knot. Attaching it to the leg loop will create enough force to make the prusik engage the brake side of the rappel device but would not be enough for it to break the leg loop. 5 mm in diameter Mar 14, 2023 · First, a hollow block is a type of cordage which is designed to bend really well and to maximize the surface area on the rope. 5” (34cm) and a 19” (48cm) and has a breaking strength of 14kN. The 6. Jul 29, 2021 · This is great for a knot pass, but that's a pretty specialized use case, and for general purposes it hasn't replaced the lower-profile hollow-block my harness. 666-750. The VT utilizes a kernmantle construction of a Technora sheath Revolutionary friction hitch and autoblock cord from Sterling. We pulled the 8mm and 7mm Bluewater VT Prusiks on 10mm, 8mm, and 6mm diameter semi-static nylon ropes. Examples include the MPD, 540° Rescue Belay, Petzl I’D, and Tandem Prusiks to name a few. Follow topic: Email Notify on site Post Reply. A computerized large gauge sewing machine is used to bar tack a devilishly strong stitch with custom thread. Elsewhere in the book, he calls the VT hitch "one of the most useful friction hitches in your arsenal Dec 13, 2017 · Yeah, I've considered this, it seems like most arborists are using these. The prusik isn’t meant to take the weight of the climber, just enough to break the rappel while still relying on the rappel device, carabiner, belay loop to bear the weight. Description. Unlike nylon cord, the Hollow Block is made with Aramid fibers and a hollow core, hence the name, allowing the fibers to bite on a rope 7mm or larger using a Prusik or Klemheist. From the 3 spiral wraps to the criss-crosses, I'll show you every technique. Vanguard Total World Stock ETF (VT) - Find objective, share price, performance, expense ratio, holding, and risk details. The VT is a versatile open-end prusik that can be used to tie: Symmetric Prusik Asymmetric Prusik (Schwabisch/Distal) Valdotain Tresse French Prusik more For personal use on ropes 8 The 7mm VT Prusik was designed for use on smaller diameter ropes. Key Benefits • 100% Technora Construction Feb 7, 2019 · What's the name of that hitch I see people usually use a hollow block with above the device on rappel? It starts by bringing the hollow block around back then both strands are brought around front on opposite sides and cross over each other like Xs about 2-3 times on the way down. Click on the link here to see the revised user instructions that come with the HollowBlock Nov 27, 2017 · My prusik has never locked up, and I hang on my prusik backup _often_ while developing new routes. The BlueWater VT performs well when used for ascending, self-belay while rappelling, as a traveling rope grab, or in conjunction with a prusik minding pulley in haul systems. As it’s made entirely of aramid fiber it doesn’t melt and is abrasion resistant. A computerized large gauge sewing machine is used to bar tack a devilishly strong stitch with our custom Technora thread. Hollow blocks size Philippines vary but the standard size of hollow blocks in the philippines (CHB standard size) are Auto-Blocks: The auto-block is almost identical to a klemheist, except you don’t girth hitch it at the end. Learn the two key knots, some applications, and see a video on all the ways to use it. 750-875 Jun 23, 2015 · VT Prusik for Rescue Belays ©2019 Rigging for Rescue® Page 2 What is a VT Prusik? The VT Prusik is manufactured by Bluewater Ropes and was originally designed by Rich Carlson of Canyons & Crags. 700-800. French climber Serge Machard invented the autoblock knot in 1961. Visit totemrigging. This The weight of solid concrete blocks can vary depending on the specific composition and manufacturing process. There are many ways to do this, but this one we have found is redundant an We offer the BlueWater VT Prusik in tan and black. 8mm somewhat square shaped hollow braid of aramid fiber that’s sewn into a loop. com for usage and workshop information. Jun 5, 2024 · The Sterling Hollow Block is just that and a bit more. LH25. It is a must have for canyoneering and rock climbing. The materials on the VT Prusik are more heavy duty, but for all intents and purposes, the 18” loop from bluewater works just as well. I was looking for the best, aka highest breaking strength friction hitch cordage to work with that. The document has moved here. Built from Sterling’s RIT 900 cord, the Hollow Block 6. The hollow braid ‘rectangular’ profile & flat surface of the material allows it to grip wet or dry rope extremely well. With a VT and the knowledge of a few knots, you can be a very capable rope technician. 12-14. Perfect May 15, 2023 · About this item . ) Tie various hitch knots: VT/Distel/Schwabisch/Prusik For use in SRT/DDRT climbing systems, hauling, dragging Sterling hollow block. Size(mm)(LxWxH) Weight(kg)** Density**(kg/m3)** Code . As a rough estimate: A 4″ solid concrete block weighs 45-50 pounds (20-23 kg), a 6″ solid concrete block weighs 70-75 pounds (32-34 kg), an 8″ solid concrete block weighs 90-100 pounds (41-45 kg), a 10″ solid concrete block weighs 120-125 pounds (54-57 kg) and a 12″ solid Light Weight. . Mar 27, 2022 · This is going to be a bit grabby; you may find an autoblock / French prusik can hold your weight and be easier to slide. A computerized large gauge sewing machine is used to bar tack a devilishly strong stitch with our custom thread. OR VT Prusik, as it actually has a core / strength reserve. This specialty design features a tough, heat resistant Technora aramid sheath over durable nylon core strands. Don’t use a sling for anything except a prusik after using it once as a prusik. Available in two sizes, the 7mm version is ideal for use with the smaller diameter ropes used by most canyoners, while the 8mm version is ideal for thicker ropes or I try to single line rap with a biner block most of the time (which works great) but def have double line rapped with both the hollow block and vt prussik which also functions fantastically and has become a new favorite. Learn how to use the VT Prusik with this detailed step-by-step tutorial. Overall length: 33″ Redesigned with a stronger aramid fiber, the Sterling 6. and are absolute and unwavering in their "knowledge" gained from 2 years of climbing in the gym. This knot is the easiest to tie and to undo, but it also provides the least stopping ability of any backup knot. Overall length: 33″ For use on personal ropes 8 mm – 9. We did a bunch Mar 7, 2025 · The 7mm VT Prusik was designed for use on smaller diameter ropes. 5" is most commonly used. I prefer the shorter one. A recent addition to the construction materials market, this hollow block comes with a decorative coating on one or both of its sides. The VT performs well when used for ascending, self-belay while rappelling, as a traveling rope grab or in conjunction with a prusik minding pulley in haul systems. GM CLIMBING 6. Mar 6, 2024 · GM CLIMBING 8mm VT Prusik Hitch Cord - 32 inch Specification: Length: 82cm / 32inch (end to end) Diameter: 8mm / 5/16 inch Material: Sheath-Technora; Core-Nylon End-to-end MBS: 20 kN / 4500 LBS Basket MBS: 30 kN / 6750 LBS Used with main ropes of 8~12. They are typically not sheathed and made out of heat resistant and extremely strong fibers. VT Prusik for Rescue Belays – Abstract Rope rescue teams typically operate redundant two-rope systems with inclusion of a failsafe mechanism for fall arrest. This thread/stitch My gut says a VT or Michoacan would probably work well too, but still I'd test. Aug 11, 2017 · Sterling’s HollowBlock is a 6. I generally extend, but on the rare occasion I don't extend the short one just barely works clipped to my leg loop, any longer and it would hit the device and defeat itself. The testing was limited to two aramid fiber friction hitch make/models: the Bluewater VT Prusik and the Sterling RIT 900 cord (aka Hollow Block). 50+ bought in past Moved Permanently. MBS: 13 KN. This thread/stitch combination The VT Prusik is a versatile open-end Prusik. Important: Because this 60 cm sling is your only connection to the rope, tie a backup bight knot (an overhand on a bight is fine) every 5 meters or so and clip it onto your belay loop with a locking carabiner, creating a Feb 15, 2023 · Using a friction hitch, like an autoblock or prusik, can act as a backup and, if used properly, can even catch and hold your body weight if something were to happen to you while you are rappelling. Use to tie: Symmetric Prusik, Asymmetric Prusik (Schwabisch/Distal), Valdotain Tresse, French Prusik. It has a some big advantages over the traditional perlon cord prusik loop. The VT is a versatile open-end prusik that can be used to tie: Symmetric Prusik; Asymmetric Prusik (Schwabisch/Distal) Valdotain Tresse; French Prusik; Specifications Posted by u/[Deleted Account] - 13 votes and 14 comments The rule supposedly is that you want a friction hitch to be 3mm smaller than the diameter of rope you are trying to grab and to use 3 wraps. Features of the HollowBlock2 prusik A solid black version of the 8mm VT for tactical and military applications. 2 of 3 Jun 16, 2019 · Before you drop 20 bucks on a hollowblock, consider the advantages of a tech-cord prussic: Fast, precision adjustability (when tied with an overhand with half-hitch backup): The VT performs well when used for ascending, self-belay while rappelling, as a traveling rope grab or in conjunction with a Prusik minding pulley in haul systems. The core in this kernmantle design keeps the VT from flattening and binding up. Key Benefits • 100% Technora Construction The VT Prusik is a versatile open-end Prusik. The VT prusik is a multiple purpose friction hitch which can be used for ascending a rope, passing a knot, hauling, descending a loaded rope, and many other purposes. If you’re not familiar, the HollowBlock is a unique hollow braid sewn-prusik cord made from aramid fibers and used for backing up rappels and lowers and performing load transfers. It's gripping ability comes from the unique hollow-braid construction, for use as a prusik or Klemheist knot on ropes 7 mm or larger. 8mm is designed to function as a pre-sewn prusik or climb heist. 8mm Endless Prusik Loop, 15" length, 25kN /5600Lbs, made of 100% Technora for increased durability and performance, 16-strands hollow braid offering power grip to main ropes, used to tie friction hitches, including prusik knot, autoblock, Klemheist knot in mountaineering, climbing, canyoneering, caving, rope rescue, tree care by arborist, rigging aerial hammock - If you don’t have a prusik cord, you can use a sling instead. You can buy hollow block in a length OR in a loop, typically referred to as a Prusik loop. Made in th. 4. 400x300x200. 400x250x200. Experience in rigging and rappelling is required. LH30. I'm generally pretty glad to have some experience with a Blake's hitch, because it works in full size rope on rope, so, as long as I have a rope, I have an option for a working friction hitch, even if I have no other materials. If you have any questions about possible uses or anything else GM CLIMBING 8mm (5/16in) VT Prusik Swen Eye-to-Eye Pre-Sewn Heat Resistant Friction Hitch Cord Kevlar & Polyester 30inch. Hollow Block works "OK" as a third hand for clients in commercial-guided groups, but otherwise not recommended for use in canyoneering. chsfp wxgprw mcjwdf qxymv fdtgnzd ewk iqkavdzqk osjfz ojkbgpd sre