Offtracking characteristics of single unit vehicles and combination vehicles are described. Offtracking values were obtained with scale models of vehicles making turns on turning radii varying from 25 feet to 225 feet. The offtracking data are shown in two charts, one for 90-degree turns, and one for 270-degree turns for vehicle wheelbases ranging from 5 feet to 55 feet. Individual vehicle offtrackings are influenced by three variables: the degree of turn, the length of vehicle wheelbase, and the turning radius. It was found that the offtracking measurements of a trailer combination may be calculated by adding the offtracking measurements of the individual vehicles in the combination. The research also found that the offtracking is greatest when the projection of the rear axle axis passes through the turning radius center; even though the projections of the other axles on the vehicle or trailer combination do not, at the same time, pass through the turning radius center. (Author)


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    Title :

    Offtracking Calculation Charts for Trailer Combinations


    Contributors:
    H. Stevens (author) / S. C. Tignor (author) / J. F. LoJacono (author)

    Publication date :

    1966


    Size :

    62 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Offtracking Calculation Charts for Trailer Combinations

    Stevens, Hoy / LoJacono, James F. / Tignor, Samuel C. | SAE Technical Papers | 1965


    Offtracking calculation charts for trailer combinations

    Stevens, H. / Tignor, S.C. / LoJacono, J.F. | Engineering Index Backfile | 1965


    Offtracking calculations for trailer combinations

    Stevens, H. / Tignor, S.C. / Lojacono, J.F. | Engineering Index Backfile | 1966



    A Simplified Procedure for Computing Vehicle Offtracking on Curves

    G. B. Pilkington / P. D. Howell | NTIS | 1973