NOVEL SUSPENSION FOR TRACK-LAYING VEHICLES

摘要

A novel suspension system for track-laying vehicles such as snowmobiles where there is a minimum clearance between the upper and lower portions of an endless track has now been invented. The invention, in a preferred embodiment, comprises an upper drive wheel and an upper idler each fixed by axle means to the frame of said vehicle and forward and rear support arms pivotally attached to the frame, the upper pivot points of said arms being spaced longitudinally. The lower extremities of said arms connect with track contact means adapted to maintain the track in contact with the terrain surface. The forward arm is pivotally connected to said forward track contact means and trails rearward to the upper pivot point of said forward arm while the rear arm projects forward from the rear track contact means to its upper pivot point. Horizontal spring means are preferably connected directly to the rear portion of the forward track contact means and to the forward portion of said rear track contact means. The horizontal spring means preferably interconnects the forward and rear track contact means. The novel suspension system of this invention is especially useful on snowmobiles having a rear mounted powerplant.