Motorcycle having enclosed running components
AssigneeYamaha Hatsudoki Kabushihiki Kaisha
InventorTakayoshi Muramatsu
Life of this patent
Estimating the term…
Abstract
A motorcycle construction that lends itself to motocross use and yet which has a lightweight racing type frame with an engine arrangement to provide a low center of gravity. Although the engine is positioned low in the frame, its components and specifically the intake and exhaust system are designed so as to be well protected and a protective covering surrounds the engine so as to also protect it. This protective covering is formed by a liquid tank such as a fuel tank for the engine and also serves to reinforce the frame assembly.
Claims19
A motorcycle construction comprising a frame assembly, a front wheel dirigibly supported at the front of said frame assembly, a rear wheel journaled at the rear of said frame assembly, an engine supported by said frame assembly, and means for driving said rear wheel from said engine, said engine having a cylinder block inclined forwardly from the vertical with a cylinder head affixed to its cylinder block and extending forwardly therefrom, an induction system for said engine extending from the rear of said frame forwardly to the rear side of said cylinder block to deliver a charge thereto, and an exhaust pipe extending rearwardly from said cylinder block toward the rear of said frame said induction system and said exhaust pipe being positioned in their entirety behind said cylinder block.
Dependencies are inferred from the claim text.