Category: Rope Rescue

Build a 9:1 pulley system with a Jigger

Build a 9:1 pulley system with a Jigger Set of fours load capture

Build a 9:1 pulley system with a Jigger Something I am always looking to do is find new ways to make gear more useful. For rescue one of the great tools in the toolkit is the jigger (aka set-of-fours). This is a pre-constructed pulley system made, in this instance, with two double pulleys. It has […]

When anchor acronyms go bad

When anchor acronyms go bad Anchor acronyms

When anchor acronyms go bad There are a lot of anchor acronyms out there in the rigging, rope and rescue world. A few examples include: SERENE: Solid (or strong), Equalized, Redundant, Efficient, No, Extension ERNEST(A): Equalized, Redundant, No, Extension, Solid (or strong), Timely, (Angles) STRADS: Solid, Timely,¬†Redundant, Angles, Distribution, Shockload They are all basically variations […]

Get more friction with a double Munter

Get more friction with a double Munter

Get more friction with a double Munter A number of organisations (e.g.ski patrols and glacier guiding) use a 6mm Spectra or Dyneema line for escape or access. The upside of using this type of system is it is lightweight and easily carried all day. One of the downsides is that you need to use a […]

Pulley versus carabiner efficiency

Pulley versus carabiner efficiency

Pulley versus carabiner efficiency. It’s always a good idea to be prepared for self-rescue when you are out and about climbing, caving, canyoning, or mountaineering. Make sure the gear you have can do the job and you have tried it out. One question that comes up is: Can I use carabiners (to save weight) instead […]

Which bends for joining ropes?

Which bends for joining ropes? joining-bends-testing-2015

This article has been updated in 2020 with all the bends retested and lots more information on variations including small and large diameters. Check it out: Which bends for joining ropes update – CLICK HERE Which bend for joining ropes? Testing and analysis of flat bends used for rope retrieval As part of writing the¬†Canyoning […]

Anchor rigging: Getting a grip on pre-tensioning

Anchor rigging: Getting a grip on pre-tensioning

Anchor rigging: Getting a grip on pre-tensioning. For anchors a long way back from an edge, we often need to bring the anchor rigging and focal point forward to a better working position. An effective way to achieve this is by using multiple strands and pre-tensioning our rigging. When the load becomes live ideally there […]

Systems Analysis: When does 1 = 4.5

Systems Analysis: When does 1 = 4.5

Systems Analysis: When does 1=4.5 Updated and revised by Grant Prattley, OTE Rescue 2014.Based on original work by SARINZ Trust 2010.Article for Tomo Times, NZ Speleological Society, Waitomo, New Zealand. It seems to happen you strike the trickiest part of rescue rigging around 4am in the morning, in the wettest part of the cave at […]

Rope Grab Test Report

Rope Grab Test Report

Rope Grab Test Report Grant Prattley, Lindsay Main and Andrew Welsh, New Zealand Land Search and Rescue, February 2001. Many rope grab devices are used by the rescue technician for a variety of functions in a rope rescue system. This study focuses on rope grabs used in a slow pull situation as used in a rescue hauling system to […]

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