Frames for motorcycles

A trials motorcycle for use in off-the-road motorcycle sports having a frame comprising a top frame member, a saddle support mounted at the rearward end of said top frame member, an upwardly inclined front frame member connected at an upper end thereof to the forward end of said upper frame member, and a steering head mounted on said connecting ends of said top and front frame members;

• a forked swinging arm pivotally connected by pivot means at a forward end thereof to the lower end of said front frame member, said forked swinging arm extending rearwardly from the motorcycle frame, a rear wheel carried between the rear ends of the fork of said swinging arm, shock absorbing means connecting said rear ends of said swinging arm and top frame members, an engine mounted on said swinging arm forwardly of said saddle support and directly behind said front frame member and said pivot means, and a drive chain connected between power output means on the engine and said rear wheel.