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    ropebook
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    ropebook beta testers

    BETA Testers Needed

    We need you! Become a BETA Tester and help with the development of the ropebook platform. We’d like to put together a selected group of…

    ropebook 20th October 2019

    Knots

    Knots Page

    ropebook 30th October 2019
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    Petzl RocTrip Mexico 2010

    ropebook 15th August 2019
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    Petzl RocTrip Zillertal 2008

    ropebook 15th August 2019
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    Petzl RocTrip Millau 2006

    ropebook 14th August 2019
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    Petzl RocTrip Argentina 2012

    ropebook 14th August 2019
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    Petzl RocTrip China 2011

    ropebook 14th August 2019
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    Graph showing the relationship between the percentage ratio and the deflection and included angle applied to deviations and redirect pulleys

    Angular Vector Forces

    Angular vector forces occur when ropes are passed through a deviation or a directional pulley. Dependent on the angle created, this can have a multiplying…

    ropebook 31st July 2019
    Diagram of a basic 6:1 pulley system

    The 6:1 Pulley System

    As we continue to apply more pulleys to the system then the mechanical advantage ratio increases. In this system some of the pulleys that have…

    ropebook 31st July 2019
    Diagram of a basic 5:1 pulley system

    The 5:1 Pulley System

    With this 5:1 pulley system the user is required to apply an effort of only 20kg to lift the 100kg load. Notice that when the…

    ropebook 31st July 2019
    Diagram of a basic 4:1 pulley system

    The 4:1 Pulley System

    This pulley system provides a 4:1 mechanical advantage. The user is required to apply a force of 25kg to raise this 100kg load, for every…

    ropebook 31st July 2019
    Basic 3:1 Pulley System

    The 3:1 Pulley System

    Here we have a 3:1 mechanical advantage. First one end of the rope is attached directly to the load, this is then passed around an…

    ropebook 31st July 2019
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