Abstract: A vehicle has an engine and a fuel tank, which is located above the engine, mounted on a vehicle-body frame. A fuel pump, which supplies fuel is spaced-apart from the fuel tank and is located below the fuel tank and in front of the engine. Further, a center of the fuel pump in the vehicle-width direction is located so as to overlap a vehicle-body center line which extends in the longitudinal direction of the vehicle body. Additionally, the fuel pump is mounted on lower main frames, which are positioned below the vehicle body.

Abstract: A cushion mounting structure of a saddle-ride vehicle with a cushion unit having an elongated stroke length for absorbing an impact from a wheel. The structure includes an upper and a lower arm constituting a suspension arm. The arms are tiltably connected to left and right portions of a support frame, the rear wheels being supported on the suspension arm. One end of a cushion unit is supported on the vehicle body frame, while the other end is supported on an upper arm by a link member and a push rod. The first end of the cushion unit is positioned inside the vehicle body frame in the vehicle body width direction, the second end of the cushion unit is positioned outside the vehicle body frame in a width direction, and an axis of the cushion unit extends in the longitudinal direction of the vehicle while intersecting the vehicle body frame.

Abstract: A vehicle has an engine and a fuel tank, which is located above the engine, mounted on a vehicle-body frame. A fuel pump, which supplies fuel is spaced-apart from the fuel tank and is located below the fuel tank and in front of the engine. Further, a center of the fuel pump in the vehicle-width direction is located so as to overlap a vehicle-body center line which extends in the longitudinal direction of the vehicle body. Additionally, the fuel pump is mounted on lower main frames, which are positioned below the vehicle body.

Abstract: A cushion mounting structure of a saddle-ride vehicle with a cushion unit having an elongated stroke length for absorbing an impact from a wheel. The structure includes an upper and a lower arm constituting a suspension arm. The arms are tiltably connected to left and right portions of a support frame, the rear wheels being supported on the suspension arm. One end of a cushion unit is supported on the vehicle body frame, while the other end is supported on an upper arm by a link member and a push rod. The first end of the cushion unit is positioned inside the vehicle body frame in the vehicle body width direction, the second end of the cushion unit is positioned outside the vehicle body frame in a width direction, and an axis of the cushion unit extends in the longitudinal direction of the vehicle while intersecting the vehicle body frame.

Abstract: A body frame structure for a four-wheeled buggy which is constructed by separately preparing the front sub-assembly and the rear sub-assembly and fastening the rear sub-assembly to the front sub-assembly. The front sub-assembly is composed of a pair of sub-assembly parts each of which is formed as an approximate loop shape including a main frame, a front down frame, a lower frame, and a center frame. Rear ends of the main frames are welded to upper ends of the center frames via a cross pipe. Brackets are provided on upper portions of the center frames in such a manner as to extend upwardly therefrom. Upper fastening portions provided at front ends of seat rails constituting part of the rear sub-assembly are fastened to mounting holes formed in the brackets. Stays are provided on lower portions of the center frames, and lower fastening portions provided at front ends of right and left back stays are fastened to the stays.

Abstract: A body frame structure for a four-wheeled buggy which is constructed by separately preparing the front sub-assembly and the rear sub-assembly and fastening the rear sub-assembly to the front sub-assembly. The front sub-assembly is composed of a pair of sub-assembly parts each of which is formed as an approximate loop shape including a main frame, a front down frame, a lower frame, and a center frame. Rear ends of the main frames are welded to upper ends of the center frames via a cross pipe. Brackets are provided on upper portions of the center frames in such a manner as to extend upwardly therefrom. Upper fastening portions provided at front ends of seat rails constituting part of the rear sub-assembly are fastened to mounting holes formed in the brackets. Stays are provided on lower portions of the center frames, and lower fastening portions provided at front ends of right and left back stays are fastened to the stays.

Abstract: A body frame structure for a four-wheeled buggy which is constructed by separately preparing the front sub-assembly and the rear sub-assembly and fastening the rear sub-assembly to the front sub-assembly. The front sub-assembly is composed of a pair of sub-assembly parts each of which is formed as an approximate loop shape including a main frame, a front down frame, a lower frame, and a center frame. Rear ends of the main frames are welded to upper ends of the center frames via a cross pipe. Brackets are provided on upper portions of the center frames in such a manner as to extend upwardly therefrom. Upper fastening portions provided at front ends of seat rails constituting part of the rear sub-assembly are fastened to mounting holes formed in the brackets. Stays are provided on lower portions of the center frames, and lower fastening portions provided at front ends of right and left back stays are fastened to the stays.

Abstract: A crank shaft of a power unit is disposed in the longitudinal direction of a vehicular body. Accessories provided at either end portion of the crank shaft are covered with a front cover and rear covers which are removable from a casing. Front and rear drive shafts are disposed to be lower than the axial line of the crank shaft. A fan unit and an air cleaner are disposed to be higher than the axial line, so that front and rear operating spaces for inserting an impact wrench are formed in front of and in back of the front cover and the rear covers. The maintenance is performed through the operational spaces.

Abstract: A saddle-riding type vehicle including a simple, lightweight and high rigidity frame structure. The frame structure includes bending upward center pipes 22, which are joined to lower pipes 21 extending backward from the lower portions of a pair of right and left front pipes 20, respectively; connecting the front pipes 20 to the center portions of the center pipes 22 with straight main pipes, respectively; putting front side pipes 25 between the front pipes 20 and the lower pipes 21 for constituting the three-sides of triangles together with the front pipes 20 and the lower pipes 21, respectively; extending seat rail pipes 26 backward from the center portions of the main pipes 24 by way of cross pipes 23 put between the upper portions of the center pipes 22, respectively; and laying reinforcing pipes 27 put between the front side pipes 25 and the main pipes 24 on the same straight lines as those of the seat rail pipes, respectively.

Abstract: A motorcycle covered by a cowl includes a power unit comprising an engine and a power transmission device enclosed by a cover within which an engine fan induces cooling air into heat transfer relation with said engine. A muffler device enclosed by the cowl has an air guide cover within which cooling air inducted into the power unit cover is passed thereinto in order to cool the muffler. According to an aspect of the invention the vehicle body frame has a hollow main frame operative to induce a flow of cooling air and for discharging it into cooling relation with the power transmission device.

Abstract: Key operating means and locking means are separately provided. The key operating means is provided on the upper portion of a steering shaft, while the locking means is mounted on the lower portion of the steering shaft. Both means are connected to each other by way of a control wire. A cylinder of the key operating means is rotated by a key to engage or disengage a locking pin of the locking means with or out of an engaging member formed on a body frame, whereby locking or releasing is achieved.

Abstract: A vehicle frame construction in a buggy with a riding saddle, includes a main frame extending longitudinally along a central axis of the buggy, the main frame having front and rear ends, and a pair of down tubes disposed one on each side of the main frame and having one ends fixed to sides of the front end of the main frame and opposite ends fixed to sides of the rear end of the main frame. Each of the down tubes is composed of a downwardly directed portion extending downwardly from the front end of the main frame and in a forward direction of the buggy, a horizontal portion extending substantially horizontally from the downwardly directed portion in a rearward direction of the buggy, and an upwardly directed portion extending substantially vertically upwardly from the horizontal portion to the rear end of the main frame.

Abstract: A front wheel suspension for a motor tricycle comprising a frame having a head pipe, a pair of front forks steerably supported on the head pipe, and a pair of bottom cases slidably fitted on lower portions of the front forks to support a front wheel. Within a closed space formed within the front forks and the bottom cases are arranged a damper to connect the forks and cases and a coil spring for biasing the forks and cases in extended direction to the damper and the coil spring thereby being protected from obstacles and considerably improving the riding comfort.