JPS6483482A - Motorcycle - Google Patents

Abstract

PURPOSE: To straighten flow of air to press a car body to a road surface to enable cornering at high speed by providing an air flow straightening part at a side extended part of a front cowl in a motor-bicycle in which a front frame and a main frame are connected to each other to freely oscillate. CONSTITUTION: As bank direction force is applied to a car body through a handle 11 by a driver at the time of cornering, a front frame 1 and a front wheel 4 oscillate about a connection shaft 1a through upper and lower swing arms 9, 10 and a steering shaft 6. In the meanwhile, a rear wheel 2 and a main frame 23 are freely capable of oscillation about the connection shaft 1a instead of banking. In this case, an air flow straightening part R is provided on an extended part (a) of a front cowl A. An air flow introduced from a front opening part (c) of the extended part (a) in a direction E is passed through a radiator (b) to collide with a back wall (e) to be discharged from a back opening part (d) in a direction F. An air flow introduced from a direction G is brought out in a direction H along a lower surface of a lower wall (f).