This is an Official CMC Application Series video ~ Enjoy!!!! This video explains how to ascend and descend with the CMC Harken 11mm CLUTCH. We begin by demonstrating a simple step-up ascent method then progress to a Rapid Ascent and Descent (RAD) technique. While there are many ways to move on the rope, we recommend these …
ASCENDING & DESCENDING With The CMC Harken CLUTCH 11MM Read More »
In this video, John McKently, former CMC School Director, takes us through an important installment in the CLUTCH Application Video Series: inspecting, loading, and testing the 11mm CLUTCH. These steps should be fully understood and followed to ensure safe operation of your device. **Full Transcript Below** The CMC CLUTCH™ BY Harken Industrial™ is the latest evolution …
Recommended Rope Systems ~ Two Tension Rope System (TTRS) Raise and Lower Two-Tensioned Rope System – Raise A Two-Tensioned Rope System shares the load between two ropes, both under tension. Each system is capable of functioning as both mainline or back-up to the other line. System System Benefits Maestro • load is distributed between two …
Recommended Rope Systems ~ Two Tension Rope System (TTRS) Raise and Lower Read More »
Technical Information ©Petzl Insights Into Carabiners Carabiners are rated in capacity by loading along the long axis. They have little strength when side-loaded along the short axis. Some offset carabiners, such as the modified “D” carabiner, help prevent side loading. Make sure to always load a carabiner along its spine (the long axis). Technical “use” …
©Petzl Technical Information ©Petzl How to calculate mechanical advantage A mechanical advantage haul system reduces the effort required to raise a load. The mechanical advantage obtained is based on the pulley effect. 1. The pulley effect If we consider a load suspended on a rope, the rope passing through a pulley above the user, with …
Ascenders and Clamps Technical Tips: How to calculate mechanical advantage Read More »
A mechanical advantage haul system reduces the effort required to raise a load. The mechanical advantage obtained is based on the pulley effect. 1. The Pulley Effect If we consider a load suspended on a rope, the rope passing through a pulley above the user, with the user’s hand holding the rope on the …
How To Calculate Mechanical Advantage with Petzl Gear Read More »
This is a repost from Petzl. These folks have it right! NOT A SINGLE PRUSIK IN THE SYSTEM Why one Utah SAR team transitioned to the MAESTRO SEPTEMBER 29 2020 ON-SITE RESCUE “Give us thirty seconds,” said Utah County Search and Rescue Incident Commander, Jared Hansen. Thirty seconds to transition from a raise to a …
What if trees had ratings? What an amazing concept. John Morton, an engineer-scientist-visionary-technician, has been doing canopy studies for years and knows how they are affected by wind. Trees, whether alone or in community, are all influenced by wind and all have a certain “wind rating” to them. When SAR members show up on scene, and …
From John Morton for ITRS: Tree Anchor “Ratings” Based on Wind Loading Read More »
The Arizona Vortex Guidebook Video Course On behalf of Rigging Lab Academy, I’m Rob Stringer and I’d like to welcome you to our instructional series on the Arizona Vortex. So the user manual and the video series are set up to enable you to use the Vortex and set it up in basic configurations. Basic …
Excerpt From The Arizona Vortex Guidebook – A Rigging Lab Academy Premiere Course IT IS VITAL THAT THE USER BE ABLE TO DETERMINE THE DIRECTION AND THE MAGNITUDE OF THE FORCES ACT- ING ON THE FRAME. THE FRAME NEEDS TO BE ASSEMBLED, HOBBLED, GUYED AND OPERATED TO RESIST ALL FORCES WITHOUT ANY MOVEMENT OF THE …
General Guidelines To A Successful Operation of the Vortex Read More »
