Performance tests with the Tyr-Trac traction aid device for wheeled vehicles had been conducted in Alaskan snow, and the results were so encouraging that further testing of the device was requested. In comparison to tire chains, the Tyr-Trac out-performed chains in all areas of operation. Additional tests were conducted in northern Michigan, comparing the drawbar pull-slip performance of an M35-A2 2-1/2-ton, 6 x 6 truck equipped with the Tyr-Trac, tire chains and with standard military tires at an inflation pressure of 15 psi. The results of these tests in no way duplicate the Alaskan results. Traction aids were of no use in snow deeper than 20 inches. Tests could be conducted only by reducing the snow cover to a depth of 12 to 17 inches. Under these conditions both Tyr-Trac and chains performed equally, with a drawbar-pull to weight ratio, DBP/W, equal to about 0.10. If traction aids were to be used in shallower snow, tire chains would be preferred over the Tyr-Trac for these reasons: less weight and bulk for more convenient on-board stowage, more economical, and easier installation and removal in the field.


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    Titel :

    Traction Aid for Wheeled Vehicles


    Beteiligte:
    B. Hanamoto (Autor:in)

    Erscheinungsdatum :

    1975


    Format / Umfang :

    13 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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