SARRR
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Daisy Chaining Webbing: The Lobster Tail
There are many ways to store webbing, the most common of which is the daisy chain. This video shows how to make a daisy chain, and a lobster tail, which is a more compact form of the daisy chain.
For more "How Too" information for sport and rescue riggers see our web page at:
sarrr.weebly.com/technique-descriptions.html
For general rigging teaching resources see:
sarrr.weebly.com/teaching-resources.html
And if you just like rope and rigging related data, our web page is a wonderful place to find information!
sarrr.weebly.com/
Переглядів: 91 220

Відео

Tying a Prusik Quickly and Efficiently
Переглядів 2 тис.7 років тому
There are many ways to tie a prusik, but this is the fastest way we have seen to consistently tie, set, and dress a prusik hitch. Hopefully this is a useful video that can reduce the amount of time it takes to tie a prusik hitch. For a paper write up of this method and more free training resources, see our web page at: sarrr.weebly.com/technique-descriptions.html Or if you enjoy rigging researc...
Slow Pull Testing 3 to 1 Haul Systems Locked Off on 11mm PMI EZ Bend Rope
Переглядів 6748 років тому
We broke sixteen 3:1 haul systems built with 11mm PMI EZ Bend rope with 8mm PMI accessory cord prusik to: 1. Identify the weakest link 2. Identify the failure mode 3. Quantify the failure strength Results: 1. The weakest point was one of three things: 12/16 tests the prusiks failed, 3/16 tests the rope mantle failed, 1/16 tests the prusik slipped continuously to failure. 2. The average failure ...
Slow Pull Testing 3 to 1 Haul Systems on 11.5mm PMI Isostatic Rope
Переглядів 5008 років тому
We broke twelve 3:1 haul systems built with 11.5mm PMI Isostatic rope with 8mm PMI accessory cord prusik to: 1. Identify the weakest link 2. Identify the failure mode 3. Quantify the failure strength Results: 1. The weakest point is the knot on the load side of the rope 2. The location of failure was where the rope entered the knot 3. The average knot strength is 20.6 kN (4577 lbs), with a stan...
Slow Pull Testing Basket Hitches Clipped to Themselves
Переглядів 4658 років тому
We broke nine basket hitches clipped to themselves tied in 1" tubular nylon webbing , rotated around the anchor, and clipped with a 1/2" diameter screw link to: 1. Measure the breaking strength 2. Identify the failure location Results: 1. The average breaking strength was 41.1 kN (9239 lbs) 2. The standard deviation was 2.6 kN (595 lbs) 3. The range of breaking strengths was 7.8 kN (1760 lbs) 4...
Slow Pull Testing Basket Hitches with a Focal Knot
Переглядів 7488 років тому
We broke two basket hitches with an overhand focal knot tied in 1" tubular nylon webbing to: 1. Measure the breaking strength 2. Identify the failure location Results: 1. The two breaking strengths were 35.4 kN (7958 lbs) and 35.6 kN (7993 lbs) 2. Both anchors broke at the overhand focal knot The results will be presented at the International Technical Rescue Symposium 2015. The complete paper ...
Slow Pull Testing Basket Hitch Webbing Anchors with an Additional Wrap
Переглядів 5408 років тому
We broke four basket hitches with an additional wrap to: 1. Measure the breaking strength 2. Identify the failure location Results: 1. The average breaking strength was 42.8 kN (9620 lbs) 2. The standard deviation was 3.5 kN (793 lbs) 3. All anchors broke at the screw link where the lowest strand was pinched against the screw link by the over riding strand. The results will be presented at the ...
Slow Pulling a Webbing and Cord Girth Hitch
Переглядів 3,5 тис.8 років тому
While pull testing anchors we broke some old equipment to see how strong they would be. Shown here are two slow pull tests including: a 1" tubular nylon webbing loop girth hitched to a 1/2" diameter screw link, and a 6mm PMI accessory cord loop girth hitched to a 1/2"diameter screw link. The webbing girth hitch broke at 25.6 kN (5744 lbs) and the cord girth hitch broke at 16.1 kN (3625 lbs). Fo...
Slow Pull Testing 3 to 1 Haul Systems on 11mm PMI Classic Sport Max (Pit Rope)
Переглядів 3888 років тому
We broke eleven 3:1 haul systems built with 11mm PMI Classic Sport Max (Pit Rope) with 8mm PMI accessory cord prusik to: 1. Identify the weakest link 2. Identify the failure mode 3. Quantify the failure strength Results: 1. The weakest point is the prusik 2. The prusiks continuously slipped throughout the pull 3. The average highest slip value was 21.6 kN (21.6 lbs), with a standard deviation o...
Slow Pull of a Three Point Equalized 8 mm Accessory Cord Anchor
Переглядів 23 тис.8 років тому
While pull testing anchors we broke some old equipment to see how strong they would be. Shown here is a three point equalized anchor with an overhand focal knot tied from 8 mm accessory cord. In our first pull, we tied the anchor to a carabiner, which failed at 27.9 kN (6263 lbs). A video of that test is posted here: (ua-cam.com/video/Gs1w1opwCcs/v-deo.html) The test shown here is the next pull...
Slow Pull Screw Link Failure
Переглядів 2338 років тому
While pull testing a basket hitch configuration, a screw link failed at 28.5 kN (6397 lbs). The screw link gate was not completely closed, the threads deformed, and the screw link plastically. The full pull test is shown here to illustrate the strength of a weakened screw link and webbing anchors. For additional research and data on climbing and rescue gear and system strength, see the SARRR we...
Carabiner Failure
Переглядів 4,2 тис.8 років тому
While pull testing an 8mm accessory cord three point equalized anchor with an overhand focal knot, a carabiner failed at 27.9 kN(6263 lbs). The full pull test is shown here to illustrate the strength of the accessory cord anchor. For additional research and data on climbing and rescue gear and system strength, see the SARRR web page at: sarrr.weebly.com/
Breaking a Screw Link
Переглядів 1539 років тому
During our testing of webbing anchors we managed to break some hardware too. This video shows the failure of one of the screw links we used during testing. For the complete paper detailing our webbing anchor results from this suite of trials visit the International Technical Rescue Symposium web page at: www.itrs-online.com/ Or visit the SARRR research archive web page at: sarrr.weebly.com/reso...
Slowly Loading Two Wrap Prusiks
Переглядів 5709 років тому
This is a two wrap prusik made from 8 mm PMI accessory cord on 11 mm PMI EZ Bend rope. This was one of the samples observed during our research into prusik strengths on rope. For the full paper and all the data see the International Technical Rescue Symposium web page at: itrsonline.org/ Or visit the SARRR research archive web page at: sarrr.weebly.com/resource-archive/empirical-breaking-streng...
Slowly Loading a Prusik
Переглядів 5869 років тому
Here is another video of a prusik pulled to failure This is a three wrap prusik made from 8 mm PMI accessory cord on 11.5 mm PMI Isostatic rope. This was one of the samples observed during our research into 3:1 haul systems. For the full paper and all the data see the International Technical Rescue Symposium web page at: itrsonline.org/ Or visit the SARRR research archive web page (when the pap...
Slowly Tensioning a Three Wrap Prusik
Переглядів 1,2 тис.9 років тому
Slowly Tensioning a Three Wrap Prusik
The Diminishing Loop Counterbalance
Переглядів 1,1 тис.9 років тому
The Diminishing Loop Counterbalance
Breaking Wrap Three Pull Two Webbing Anchors
Переглядів 1,3 тис.9 років тому
Breaking Wrap Three Pull Two Webbing Anchors
Breaking Basket Hitch Webbing Anchors
Переглядів 7769 років тому
Breaking Basket Hitch Webbing Anchors

КОМЕНТАРІ

  • @ogre5184
    @ogre5184 3 місяці тому

    진짜 최고인거 같다 일반적 데이지 체인보다 대중화 되면 좋겠다

  • @RyanBarnes
    @RyanBarnes 4 місяці тому

    This is how I'm going to start typing my ratchet straps for stowage.

  • @ambereason1509
    @ambereason1509 11 місяців тому

    This video caused my divorce

  • @preacher1776
    @preacher1776 Рік тому

    Practice, yes, it'll be fast. "In practice", it's easy to get off your kit, undo the slip knot, and carry your buddy out in a makeshift litter.

  • @AMC-eq3jr
    @AMC-eq3jr Рік тому

    Never too old. I keep practicing. Thanks for the invaluable instructions.

  • @jim-qz7up
    @jim-qz7up Рік тому

    Just did 2 fifty foot sections. Thanks!

  • @drinalco
    @drinalco Рік тому

    here from the spiritus tubular nylon video

    • @adamcorbett5289
      @adamcorbett5289 5 місяців тому

      Here because i was daisy chaining my webbing and UA-cam spied on me like a bunch of commie bastards. But i was doing so because of Freds video

  • @huorkz_pl5424
    @huorkz_pl5424 Рік тому

    thanks for video, helped a lot!

  • @ericforsman7787
    @ericforsman7787 Рік тому

    Excellent video. Thanks for posting!

  • @88yellowjacket
    @88yellowjacket 2 роки тому

    2:23 Don't tell anyone but this is the same as a single stitch crochet...

  • @j.walker7990
    @j.walker7990 2 роки тому

    thanks. by following your tutorial and starting and stopping a couple times I got the lobster tail first try. definitely the better method to store 1x30'. awesome video.

  • @buildingusa9604
    @buildingusa9604 2 роки тому

    What happened with the results? How many pounds to take breaking point?

  • @maxiegrobner9018
    @maxiegrobner9018 2 роки тому

    Camera operators are silent. Unprofessional.

  • @drqazlop
    @drqazlop 3 роки тому

    Cute and neat, but far from "more efficient"

    • @SemperAnnoying
      @SemperAnnoying 2 роки тому

      more efficient than having a roll or a random bundle in a pack.

    • @Bladewarrior-323
      @Bladewarrior-323 2 роки тому

      Settle down children. Let us not break character for any keyboard warrior. Take a deep breathe, I’m okay. Your okay. This is the UA-cam comment section, it’s okay.

    • @Carbonbuild
      @Carbonbuild 2 роки тому

      @@Bladewarrior-323 touch grass

    • @UnaGaming.
      @UnaGaming. 7 місяців тому

      @@Carbonbuildreal

  • @beibeifan5802
    @beibeifan5802 3 роки тому

    The video helped me a lot

  • @phkit420
    @phkit420 3 роки тому

    Does it reduce if your using a longer cord ? For example you’ve wrapped the two loops around 2 huge boulders

  • @SignedSign
    @SignedSign 4 роки тому

    -Hurry up down there, I cant't hold you all day... -Chill out, just wrapping up my webbing... lol

  • @kruxltdaseguridadenalturas1943
    @kruxltdaseguridadenalturas1943 4 роки тому

    How many kn are needed to slip the knot?

  • @ridermak4111
    @ridermak4111 4 роки тому

    Lots of variables involved in wrap friction. Very interesting though. I would love to have seen a back to back comparison with 1/2” kernmantle, same W3P2 configuration. I’m personally befuddled as to why safety of life critical anchor points are trusted to webbing when kernmantle rope outperforms webbing by tons. Webbing is a single unprotected load element that when under load can fail suddenly and catastrophically if nicked by a sharp edge. Quality kernmantle static rescue rope has more than double the load rating and built-in protection of the core by the mantle. Fail testing of kernmantle shows the core failing long after the sheath. Compact, light weight is important to sport climbers, not as much for rescue teams. Just some facts to chew on. Sorry for the rant. Safety of life. 🤜🤛

  • @KillroyX99
    @KillroyX99 4 роки тому

    SARRR is SAR team made of pirates?

  • @REVOLUTIONS51
    @REVOLUTIONS51 5 років тому

    Next time try a Kevlar cordalette

  • @choonwahyee9101
    @choonwahyee9101 5 років тому

    Webbing rope's , are for what , for who 's ! Anchor ? Belay's ? Water safe ? Climbing?

  • @dmcoxfree
    @dmcoxfree 6 років тому

    Thanks for showing us the amount of weight applied to break it.

    • @secret5.
      @secret5. 5 років тому

      dmcoxfree Yea I don’t think anyone’s applying 8500lbs of force during a fall.

  • @Badnewzkhy
    @Badnewzkhy 6 років тому

    5:29 lmfao oh lort

  • @awesomelyhumble8244
    @awesomelyhumble8244 7 років тому

    Thanks for making this video. I'm impressed! :D

  • @benraposa66
    @benraposa66 7 років тому

    Do you think it fails there because of the knots pinching ? I thought for sure it would fail at the fishermans knot. Guess I should go look at the info you posted huh ?

    • @DroPsyDro
      @DroPsyDro 7 років тому

      on the left side of the overhand knot, there are two strands sharing the load, on the right side (where the fisherman's knot is), there are three (double) strands sharing the load. so on the fisherman, there is 1/6 (1044lbs) less force than on the strand who failed first.

    • @civedm
      @civedm 6 років тому

      I'm sure it failed merely because of the amount of weight it was holding back.

  • @jasonmartin6664
    @jasonmartin6664 7 років тому

    Mountain guides use that style of macrame to lower a guest and then to wrap a cord or rope around a tree and then rappel. We then pull on it as you did. The whole thing comes undone and drops down as a loop. We refer to it as an equivocation-hitch, and the process of using it as equivocating...

  • @colinwalker1626
    @colinwalker1626 7 років тому

    Nice video but have to say the length of tails on the Double Fisherman's bend have me a little nervous.

    • @sarrr9377
      @sarrr9377 7 років тому

      Thanks for the comment, Colin. Of the hundreds of tests we've done with Prusiks (sarrr.weebly.com/sar3-original-research/-is-there-a-right-way-to-tie-a-prusik, sarrr.weebly.com/sar3-original-research/empirical-breaking-strength-of-single-prusiks-of-four-diameters-on-11mm-static-rope, sarrr.weebly.com/sar3-original-research/-response-of-some-31-haul-systems-to-excessive-loading), none of the tails have ever slipped once the Prusik is set. This Prusik was in use for 10 years without slippage. Do you know of other Prusik studies that show something different?

    • @driver3899
      @driver3899 6 років тому

      My question is what is safer, a Prusik with tails or a Prusik with no tails? Doing something hundreds of times without failure doesnt seem like it should be grounds for it to suddenly become best practice.

  • @cavertevans
    @cavertevans 8 років тому

    The rated strength of the webbing is 4000 lbs or ~17.8 kN. This data point made it in to our much larger study of webbing anchors which is posted at: sarrr.weebly.com/sar3-original-research/a-review-of-webbing-anchor-research

  • @stephen1133
    @stephen1133 8 років тому

    Thank you for testing this. Do you know what the 1" tubular webbing rated at in a straight pull? The sewn ones I have a UBS (ultimate break strength?) of 7,000lbs or 31kN. The sterling 1" tubular webbing I have is 4,000 lb MBS in a straight pull or 6,100 lb MBS in a sewn loop.

    • @cavertevans
      @cavertevans 8 років тому

      Sorry, I just saw this comment. Way too late, I know... I haven't pull tested webbing off the spool. So I don't know. It is rated at 4000 lbs, but it probably breaks at a much higher strength.

    • @stephen1133
      @stephen1133 8 років тому

      cavertevans Interesting thanks

  • @cavertevans
    @cavertevans 9 років тому

    Just a heads up, but the problem with the ITRS web page was on their end. It was down for a while, now it is back up...

  • @MrJx4000
    @MrJx4000 9 років тому

    Nice video but your itrs-online.com link does not work: The page you requested is NOT AVAILABLE