BRAKING AND LOCKING BEHAVIOUR OF MOTORCYCLES WITH VARIOUS BRAKING SYSTEMS

BREMS- UND BLOCKIERVERHALTEN VON MOTORRAEDERN MIT VERSCHIEDENEN BREMSSYSTEMEN

The conventional motorcycle braking system allows the practised driver to achieve optimum braking. Measurements show that braking of more than 100 percent can be attained with motorcycles. Such values are not achieved with normal passenger cars, even when they have anti-locking devices; the highest values are about 90 percent. The reason is the motorcycle tyre which is designed for optimum adhesion, which has values of over 1.0 on dry asphalt. Therefore a limit on locking of F = 1 was set by hatchings. The less skilled driver used to cars does not achieve the possible braking under certain circumstances, because of the road adhesion value, and introduces an avoidable camber through unnecessarily early locking of the rear or front wheel. With the car any driver achieves braking appropriate to the road adhesion value, because of the joint operation of all wheel brakes, so that in dense traffic the unskilled motorcyclist is particularly at risk. Joint braking systems can be an advantage. It is shown, however, that it is difficult to find a design for rear and front wheel brakes and suitable pressure control devices which ensure safe braking for the unskilled driver for all conditions of loading, road adhesion values, and any desired sequence of operations. Legislators will have to consider this problem when drawing up recommendations for combined motorcycle braking systems. (TRRL)

  • Corporate Authors:

    Franckhlsche Verlagshandlung

    Pfizerstrasse 5, Postfach 640
    7000 Stuttgart 1,   Germany 
  • Authors:
    • Luepertz, H
  • Publication Date: 1979-3

Language

  • German

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00317057
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD, TRIS
  • Created Date: May 21 1981 12:00AM