We’re back here at the lab, and this is a continuation of what we’ve done, the past couple of days with high lines. In quick review, We had, and we built the track line, and we had the control line for our basic high line system. Now what we’ve added to it is a third …
English Reeve: Control Side & Carriage System Highline Systems Read More »
Leadership can be seen as a form of mechanical advantage, in which the application of forces and vectors results in powerful outcomes. Rigging and mechanical leverage systems are an effective way to illustrate this concept. Just as a force applied at one end of a lever can exert much greater strength when transmitted to the …
Mainline Rescue Systems – A New Course An understanding of mechanical advantage systems — in raising and lower modes — is crucial to all rope rescue technicians. Dealing with Mass and Force is aspects of consequence if not considered during operations. Working with tensioned anchor systems, guying systems, high directionals, load positioning and litter movement …
Pre-plan the Working Line All too often, teams rig their haul system with the progress capture device (the ratchet) at a directional anchor located in front of the mechanical advantage system. This ratchet position is most often due to the lack of pre-planning the layout of the working/haul line system. Usually, the rigger will build …
Mainline Rescue Systems: Pre-plan the Working Line Read More »
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. …
Progressing to the Next Level in Understanding Mechanical Advantage Using The T-Method Read More »
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 …
The Mechanical Advantage (MA) systems used in rescue incorporate one of the most elegant simple machines known to man, the pulley. While it is Newtonian Physics that explains how pulleys work, we owe the Sicilian mathematician Archimedes for its invention. History tells us that Archimedes boasted to his king that with enough pulleys he could …
Functionality of Mechanical Advantage and Considerations Read More »
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 …
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 …
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 …
