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)
Offtracking Calculation Charts for Trailer Combinations
1966
62 pages
Report
No indication
English
Civil Engineering , Road Transportation , Vehicles , Roads , Maneuverability , Design , Tractors , Trailers , Steering , Offtracking
Offtracking Calculation Charts for Trailer Combinations
SAE Technical Papers | 1965
|Offtracking calculations for trailer combinations
Engineering Index Backfile | 1966
|Offtracking calculation charts for trailer combinations
Engineering Index Backfile | 1965
|