Pulley Systems Archives | Page 2 of 10

Progressing to the Next Level in Understanding Mechanical Advantage Using The T-Method

By Lance Piatt / Blog, Mechanical Advantage, Pulley Systems, Pulleys & Mechanical Advantage / 295 Comments

Kudos goes out to Peak Rescue Institute for the help. The purpose of this lesson is to give the student rescuer a more thorough understanding of mechanical advantage. It will review basic concepts learned in the technician course and add advanced concepts such as the T-method, system efficiency, haul system progressions, and counter-balance haul systems. …

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Mechanical Advantage Progression

By Lance Piatt / Blog, Mechanical Advantage, Pulley Systems, Pulleys & Mechanical Advantage / 295 Comments

Thank you to Peak Rescue Institute for the graphics In this section, students will learn five different MA systems: 1:1, 2:1, 3:1, 4:1, and 5:1. This range of MA systems is sufficient to address the majority of rescue hauls encountered in normal field operations. As with most other aspects of rope rescue, consistent practice building …

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Mechanical Advantage, Part 3

By Lance Piatt / Blog, Pulley Systems, Pulleys & Mechanical Advantage / 99 Comments

Thanks Peak Rescue Institute Full Video at the bottom All right. The next mechanical advantage system in our progression is a five to one mechanical advantage system. And this is a simple five to one mechanical advantage system. So we’ve already differentiated between simple and compound. The last system that we showed was a four …

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Mechanical Advantage, Part 2

By Lance Piatt / Blog, Mechanical Advantage, Pulley Systems, Pulleys & Mechanical Advantage / 191 Comments

Thank you Peak Rescue Institute Full Video at the bottom So progressing up through the levels of mechanical advantage from 3:1, we can go to a 4:1. For those in the fire service, this is a fairly common mechanical advantage system that we’ll find actually piggybacked onto a main rescue rope. So we’ll build a …

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Mechanical Advantage, Part 1

By Lance Piatt / Blog, Mechanical Advantage, Peak Rescue Institute, Pulley Systems, Pulleys & Mechanical Advantage / 196 Comments

Thanks to Peak Rescue Institute Full Video at the bottom! In general, the Ideal Mechanical Advantage (IMA) is the ratio between the distance the load moves and distances the haul team moves. In a 2:1 system the load will move 1′ to every 2′ of haul. However, this does not mean that lifting the load is twice …

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Dynamic Directional Offset System Using an A-Frame and Natural High Directional

By Lance Piatt / Blog, Dynamic Directional, Elevated Anchor Systems, General Rigging, Highline Rigging, Horizontal Rigging, Offset Track Line, Pulley Systems, Pulleys & Mechanical Advantage, Twin Tension Rope System, Twin Tension Rope System Clutch, Two (Twin) Tension Rope Systems, Two Rope Offsets, Two Tensioned Rope Rescue Systems / 10 Comments

Over time, we’ve found this style of deflection offset to be really fun. They have their limits, as with any system, but strength (when properly rigged and run) comes easy and we appreciate the versatility it offers. Large gaps or spans are typically the MO for dynamic directionals. We used a standard A-Frame configuration on …

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Staggering Your Rigging Anchors Increases Efficiency But At What Cost?

By Lance Piatt / Anchors, Blog, General Rigging, Horizontal Rigging, Pulley Systems, Pulleys & Mechanical Advantage / 6 Comments

Staggering rigging anchors is a perfect way to spread the mechanical advantage system over a broad area, while at the same time, using the area very efficiently. The goal is to get as much “throw” as possible and to limit resets. There are numerous ways to do this and these are only two of the …

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WHAT YOU NEED TO KNOW ABOUT THE PETZL SPIN PULLEYS

By Lance Piatt / Blog, Equipment, Petzl, Pulley Systems, Pulleys & Mechanical Advantage, RRG Gear Review / 119 Comments

WHAT YOU NEED TO KNOW ABOUT THE PETZL SPIN PULLEYS For rescue teams all over the world, having the most efficient equipment possible for whatever situation they may face, is an absolute priority. Released in 2020, the Petzl MAESTRO descender with integrated progress-capture pulley delivers exactly that. In addition, the family of SPIN pulleys rounds …

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MORE IS POSSIBLE ~ Introducing the 13 mm CMC CLUTCH™ BY HARKEN INDUSTRIAL™

By Lance Piatt / Blog, CMC Clutch by Harken Industrial, CMC Rescue, Pulley Systems, Pulleys & Mechanical Advantage, RRG Gear Review / 197 Comments

CMC CLUTCH by Harken Industrial is the latest evolution in rescue and rope access hardware. The CLUTCH is patented and made in the USA by CMC and Harken Industrial in a partnership that combines over 90 years of experience in rescue and rope management. Suited to a multitude of rigging operations, the CLUTCH moves seamlessly …

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Recommended Rope Systems ~ Two Tension Rope System (TTRS) Raise and Lower

By Lance Piatt / Blog, Petzl, Principles of Learning, Pulley Systems, Pulleys & Mechanical Advantage, RRG Gear Review / 43 Comments

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 …

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