rope diameter

Rescue Rope Specifications and Webbing Overview

Previous Articles on Rescue Rope A Rescue Rope and Cord Overview Rescue Rope Construction Rescue Rope Frequently Asked Questions Rope Diameter The rope diameter is the width of the rope. The rope diameter is measured in either inches or millimeters. American rope manufacturers typically use inches, while European rope manufacturers use millimeters. The current test …

Rescue Rope Specifications and Webbing Overview Read More »

Pulley system efficiency tests with Petzl Maestro, I’d S, Pro Traxion and RollClip

There can be a big difference between the theoretical efficiency of a pulley system and its actual efficiency. Here are test results from the Petzl lab. 1. Efficiency depending on the device used at the head of the system. The force required to raise a 100 kg mass was tested under several configurations with different …

Pulley system efficiency tests with Petzl Maestro, I’d S, Pro Traxion and RollClip Read More »