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Topic: Prusik knot


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  The Prusik Knot
The Prusik Knot is a variation of the rolling hitch.
Knots could untie, lines could break, cleats could break, you could fall out of your Bos'n's chair.
The Prusik knot was invented in 1931 by Dr. Karl Prusik and was described in an Austrian mountaineering manual describing it as an ascending knot.
fmg-www.cs.ucla.edu /geoff/prusik_knot.html   (1415 words)

  
  Prusik knot - Wikipedia, the free encyclopedia
The prusik knot or prusik hitch is a friction hitch knot most commonly used by climbers for ascending.
Rescue teams such as Swiftwater rescue use a Prusik knot as a 'pulley tender' hitch, to hold a line taut while tensioning a highline for a Tyrolean traverse, or in boat-on-tether and similar rescue operations.
This knot can slip on worn ropes, and for the purpose of ascending its use is largely superseded by mechanical ascenders.
en.wikipedia.org /wiki/Prusik_knot   (305 words)

  
 Reference.com/Encyclopedia/Prusik
A Prusik (aka Prussik or Prussic) is a friction hitch used in climbing, canyoneering, caving, rope rescue and by arborists to grab a rope (sometimes referred to as a rope-grab).
A Prusik hitch is tied using a loop of nylon accessory cord or a sling, though some suggest avoiding spectra slings, due to their high potential for melting when the hitch slips.
Prusiks are unlikely to be needed on short climbs where the climber can be lowered to the ground; conversely they may prove useful where the climber cannot be lowered (either due to the height of the cliff or due to a hazard underneath the climber).
www.reference.com /browse/wiki/Prusik   (1753 words)

  
 Klemheist knot - Wikipedia, the free encyclopedia
The Klemheist knot is a type of friction knot, used as part of a system to ascend or descend a climbing rope.
As with other friction knots, it grips the rope when weight is applied and is free to move when the weight is released.
It is similar in function to the Prusik knot and the Bachmann knot, but has the advantage over the prusik that a loop of webbing can be used as an alternative to cord.
en.wikipedia.org /wiki/Klemheist_knot   (104 words)

  
 kite knots   (Site not responding. Last check: 2007-10-26)
Knots are one of the basic skills essential to flying kites.
It is almost a 100% knot and is easy to untie after use, even if considerable tension has been applied to the line.
This is THE knot to use to tie two pieces of Spectra together.
members.aol.com /goodheavens/knots.html   (874 words)

  
 Prusik knot (or Prussik knot) - OZultimate.com canyoning   (Site not responding. Last check: 2007-10-26)
The Prusik knot was invented by Dr Karl Prusik (sometimes spelled Prussik) in the early part of last century.
The knot must be tied with a rope of diameter less than the main rope, as the effectiveness of the knot is reduced the closer the two ropes are in size.
The description assumes that you are tying the knot with a prusik loop (a short piece of cord tied into a loop).
www.ozultimate.com /canyoning/knots/prusik   (246 words)

  
 ORGT Caving - Instructions for climbing on Prusik Knots   (Site not responding. Last check: 2007-10-26)
Prusik knots are one of three climbing systems available through ORGT (the other two are the fog system and ropewalker).
This system uses three prusik knots to attach you to the rope: one attached to your seat harness, and one attached to each foot.
This knot is tied in a thin rope to allow it to grip a larger rope.
cyberbuzz.gatech.edu /orgt/caving/knots/knots.html   (1281 words)

  
 Get Outdoors - Mountaineering Basics: Knots
This knot can work loose over time, so be sure the knot is cinched very tight and the tails of the knot are at least 2 inches long.
The prusik knot is also used to help in raising and lowering people and equipment during rescues.
Bachmann Knot: The Bachmann knot is used for the same purposes as a prusik knot.
syndication.getoutdoors.com /go/golearn/92   (1423 words)

  
 Felix McGousal's Knot Page   (Site not responding. Last check: 2007-10-26)
The Prusik knot is the principle American climbing and SAR knot.
It is best to tie this knot with four or five turns around the main line and with a minimum of slack, because it elongates when loaded and use one of the usual methods for securing a bowline.
The assymetrical prusik from a region of southern Germany and was originally an arborist's knot.
home.rochester.rr.com /ksose/knots/grabs.html   (1498 words)

  
 Prusik Innovations Ltd.   (Site not responding. Last check: 2007-10-26)
Prusiks are frequently used to safely raise and lower people by ropes.
Prusik Innovations is also dedicated to helping individuals, teams and organizations recognize and strive for their full potential.
Often the techniques and strategies we use seem as simple as the prusik but are amazingly effective in achieving their purpose.
www.prusik.ca /prusik.html   (362 words)

  
 Knots
Properly tied, this knot is as pretty as it is strong.
Originally intended for climbing, the Prusik Knot is supposed to slip smoothly when loose and hold firm under a sideways load.
This Prusik Knot was used during a falconry display to attach a small clip to my kite line for holding a falconry lure.
www.deltas.freeserve.co.uk /knots.html   (2717 words)

  
 Knot Knowledge - Prusik   (Site not responding. Last check: 2007-10-26)
The prusik is widely used as an ascending knot.
The prusik can cinch up tightly and the friction can be somewhat difficult to break after a load has been applied.
It is important to keep this knot neat while tightening.
www.iland.net /~jbritton/prusik.htm   (90 words)

  
 The Prusik Knot or Triple Sliding Hitch
History: The Prusik knot was developed in 1931 by Dr.Karl Prusik (sometime president of the Austrian Mountaineering Club and often misspelled "Prussik".) It appears to be identical in structure to a knot described by Ashley for hoisting a spar.
Structure: The knot requires a "Prusik Loop" which is constructed by joining the two ends of a length of rope using a Double Fisherman's or a Triple Fisherman's.
Two Prusik loops are alternately slid up the static rope: a long Prusik loop allows the climber to lift himself using leg power, and a second short Prusik loop is attached to the harness.
www.animatedknots.com /prusik/index.php?LogoImage=LogoGrog.jpg&Website=   (336 words)

  
 Camp4: Prusik Rappel Safety
Most experienced cavers were not able to release the prusik, especially when closed eyes were required after the free fall portion of the drop had been reached [closing the eyes makes the loss of control more of a suprise - gds].
The prusiks grabbed and I swung about 60 feet across the pit where my head impacted the wall, cracking my helmet, and finally stabilized hanging upside down from the prusiks 30 to 40 feet off the floor....
Prusik rappel safeties are not mentioned, as far as I could find, in David Judson's (ed.) "Caving Practice and Equipment" (British Cave Research Association, 1991), but autolock descenders (e.g., Petzl Stop, Diablo, Dressler, SRT, Gemlock, Tracson, Lewis, etc.) are.
www.camp4.com /rock/index.php?newsid=207   (2380 words)

  
 Prusik Knot   (Site not responding. Last check: 2007-10-26)
The Prusik Knot is used to ascend a climbing rope using a smaller cord.
The smaller cord is tied using the double fisherman's knot.
The knot is tied by wrapping the looped cord around the climbing rope to create friction when weight is applied.
www.indoorclimbing.com /Prusik_Knot.html   (164 words)

  
 Simo Salanne: Kite Flier's Knot Gallery   (Site not responding. Last check: 2007-10-26)
Figure 8 is better than overhand knot to make a loop on a flying line.
Prusik knot is well known by mountain climbers.
Prusik is very good when you need to adjust the length of a line and then to lock it in place.
gamma.nic.fi /~sos/knots.htm   (265 words)

  
 Rappelling Death at Pinnacles National Monument
He backed up this system by tying a Prusik knot to the rappel lines above the brake with a 5mm perlon sling which was attached to a second 1-inch tubular webbing wrapped twice around his waist.
This is where a trailing Prusik knot usually escapes the climber's grasp and jams.
The simple expedient of tying a Prusik knot to the rope and clipping it to the waist loop protects against accidental detachment from the carabiner brake and losing control of the rappel.
www.stanford.edu /~clint/pin/acc/765tomb.htm   (1085 words)

  
 Touching the Void 20/20 - Teton Gravity Research Forums
Once the knot sucks into the belay device and there is no way to get the weight off the rope, and you are in danger of being yarded off the mountain, well, I don't see any other solution than the knife.
Instead of clipping the prusik to the harness with a biner if you girth hitched it with a sling or another prussik, you could have then just cut that piece after you had set the belay on the 2nd rope.
The knot hitting the belay device is important as you would need something like that to be able to free both hands to be able to tie the knots.
www.tetongravity.com /forums/showthread.php?t=20266   (1595 words)

  
 Basic Knot, Prusik Knot   (Site not responding. Last check: 2007-10-26)
The Prusik knot was invented by Dr. Karl Prusik, and the Prusik Knot is useful in everyday climbing and search and rescue operations.
The Prusik knot is one of a family of knots which are designed to slide along a rope when the body of the knot is held but will grip when loaded through its sling.
Prusik Knots are still very useful in emergency situations for replacing a damaged or lost ascender or for temporarily tying off a rope.
www.mmadventure.com /knots/prusik_knots.htm   (125 words)

  
 [No title]
P.S. This knot is proposed for use in training Flexifoil kites when you want the strong line to run the full distance to the top kite.
The knot usually worked very well, but in light winds, when there was no continous tension, it slided on jerks when it shouldn't.
knot The loop which is used to make the Prusik knot, is lark's headed to the frame in the conventional way.
www.kites.tug.com /Archive/kites/potpourri/mps-bridle   (1377 words)

  
 Rock Climbing Knots: Friction
With one or two prusiks you can ascend a rope, or rig a z-pulley to haul up an injured climber, or backup an abseil.
Note: this form of prusik knot can sometimes be difficult to loosen once it has been tightened by the weight of a climber.
The "Autoblock" is essentially the same knot as the Klemheist, except that in the last step you simply clip both tails together with a carabiner, rather than feeding one through the other.
www.chockstone.org /TechTips/prusik.htm   (535 words)

  
 KNOTS   (Site not responding. Last check: 2007-10-26)
The knot is almost idiot-proof, all you have to do is add an extra twist to a normal knot then follow the rope back through.
The Prusik can be used as a self belay during a rappel as well as securing a fallen leader.
This knot is used in case you actually have to ascend a fixed rope.
www.geocities.com /Yosemite/7944/knots.htm   (448 words)

  
 Prusik
The prusik is listed as required "gear" for the Salomon WAR, and simply consists of loop of accessory cord, that when tied, is not longer than your arm's reach.
With the knot dressed down, he can clip the free end of his prusik into a carabiner on his harness Step 4.
Knots on the Weba Mecca for knot aficionados.
www.coloradofrog.com /skills/ropes/prusik.html   (491 words)

  
 Prusik Knot   (Site not responding. Last check: 2007-10-26)
It takes a while to tie the knot and then set the proper amount of slack, then as one climbs, the bowline tends to tighten and the slack increases - decreasing the holding power of the knot.
Although this occurs to some degree with any knot (or ascender), it seems to be a particular problem with this knot.
Loosening the knot by pushing up on the bottom is normally easy, and it can usually be loosened under load by simply pushing down on the top of the knot.
www.scoutxing.com /knots/prusik_knot/prusik_knot.htm   (197 words)

  
 JM Notes - Prussik
I took out the prusik ropes attached to a carabiner from my harness; it took me a little while to separate them as they were knotted to each other.
I attached both knots around the rope - short prusik to the rope and clipped to harness and the long prusik to the rope below the short prussic loop, not attached to the harness.
I was disappointed to have to use through the corner prusiking; at the same time, was proud to have used what I had learned from my climbing training; gave me a refreshing lesson on the knot in an actual experience.
www.mirolka.com /prusik.htm   (725 words)

  
 Rescue Response Gear - Newsletter
The knot’s ability to hold the load depends on the number of wraps, the surface friction and the diameter of the tree or post (must be at least 8 times the diameter of the rope.
The Prusik Hitch is used to tie one rope onto another in such a manner that the hitch holds when loaded, but will slide easily when loose.
The ideal situation when using the Prusik is a combination of rope type, rope size differential and number of wraps so that the Prusik Hitch will hold the load you intend to put on it.
www.rescueresponse.com /html/news04-02/technique.html   (946 words)

  
 Tech Tip: Rappel Safety - Guiding Newsletter - September 2001
One is that if the prusik knot is allowed to grip it has the full weight of the climber on it and is therefore difficult to release.
The knot is commonly attached to the leg loop of the harness.
As with the previous method the knot is held with the braking hand to slide it along while rappelling.
www.mountain-guiding.com /newsletters/tech-2001-09   (885 words)

  
 prusik.com
A prusik consists of a loop of cord that is wrapped around the main rope 2 or three times and then back through itself.
A pair of pursiks attached to a ropecan be used to ascend the rope.
Prusiks are frequently used as a safety catch while raising and lowering people by ropes.
www.prusik.com   (161 words)

  
 Knots on the Web (Peter Suber)
You'll be surprised at how knotting software can make it easier for you to learn to tie knots, to explore the mathematical properties of knots, and to create stunning images of knots, including knots never seen on Earth.
Maintained by Jan Korpegård. Under each knot, Korpegård gives the knot's name in 10 languages, and asks readers of other languages to send him the names of the same knots in their languages; he even provides the form for submitting the names electronically.
Decorative knotting, some for sale, by a man who calls himself the world's best (which may or may be true), and who thinks of himself as alone in his art (which is fortunately false).
www.earlham.edu /~peters/knotlink.htm   (6783 words)

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