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Members: Hauling Friction

Richard Delaney October 26, 2014 Member content, Test Reports 2 Comments

Friction through Progress Capture Devices (PCDs).

Petzl-PCD-XrayEdges

This image shows three different devices rigged and loaded as if positioned at the back of a hauling system. We can use the Capstan equation to predict the loss through each device if it is functioning as a ‘pulley’.

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Richard Delaney

Richard Delaney has worked professionally with ropes since 1992 as a multi-pitch rock-climbing instructor, technical rescue instructor and rope access technician. Understanding and teaching the Physics of Rigging is a core passion of Richard’s, one based on his experience, and his prior professional life as a qualified engineer.

2 Comments
  1. Jonah Blank
    February 25, 2015 |
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  2. Richard Delaney
    February 25, 2015 |
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