The Consumer Product Safety Commission has promulgated a safety standard for bicycle braking systems based on the stopping distances achieved in road tests under specified conditions. This report presents an error analysis of the test method, for the Commission's use in justifying or modifying the test criteria. The error analysis is based on experimental data, for the most part, and on theoretical principles where sufficient data are lacking. The theory, a kinetic analysis of the bicycle braking process, is included in the report together with proposed definitions of terms intended to quantify important aspects of bicycle braking performance. The error analysis produced estimates of rather large lab-to-lab and test-to-test variabilities to be expected from the test method. These, in turn, were found to be principally dominated by errors resulting from an incorrect overweight-rider allowance specified by the Commission, and by variations in rider reaction times, respectively. Suggestions are made for more accurate methods of accommodating variations in rider mass, for reducing the effects of the test-to-test variability, and for reducing the danger of pitchover in the performance of the road test.


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    Titel :

    The CPSC (Consumer Product Safety Commission) Road Test of Bicycle Braking Performance - Kinetic and Error Analyses


    Beteiligte:
    L. Mordfin (Autor:in)

    Erscheinungsdatum :

    1975


    Format / Umfang :

    75 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





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