A brief survey is presented of the fundamental performance requirements of trucks for railroad cars, and an outline is given of research in progress in this area by the AAR (Association of American Railroads) in cooperation with other interested organizations. The functions of a truck can be summed up as follows: guidance of the car along the rail, isolation and protection of car and contents, support of car and contents...and, transmission of brake retarding forces. One of the major problems being studied is divergent hunting in which the wheelset over-corrects for a displacement so that the amplitude of each cycle of oscillation is greater than the previous one. Hunting is a complex phenomenon. There appear to be at least 12 factors which influence the speed at which violent hunting will occur.

  • Corporate Authors:

    Railroad Engineering Conference

    Depew, NY  United States 
  • Authors:
    • Dwyer, H I
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00071973
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Tech Proc
  • Files: TRIS
  • Created Date: Dec 13 1976 12:00AM