This rear wheel suspension device of a motorcycle is disposed so as to be displaced to one lateral side relative to a center portion in the vehicle widthwise direction of the motorcycle. A main frame which forms the front half of a motorcycle frame structure has a single backbone frame extending from a head pipe rearward and obliquely downward in the center portion in the vehicle widthwise direction. A vehicle-body-side support member which extends in the vehicle widthwise direction is supported by a rear portion of the backbone frame. A one end portion of the rear wheel suspension device is rotatably supported by a right end portion of the vehicle-body-side support member.

There is provided a saddle-type vehicle that can secure a sufficient space below a fuel tank and efficiently arrange a fuel filter in a vehicle space while a fuel tank and the fuel filter are made closer to each other. The saddle-type vehicle has a seat frame 17 for supporting a seat 12, and a suspension bracket 16 extending upwards from the rear end of a main frame 14. The front portion of the seat frame 17 is secured to the upper portion of the suspension bracket 16, the front end portion of the seat frame 17 extends to the rear end portion of the fuel tank 24, and a space 241 is formed in front of the seat frame 17 and below the fuel tank 24 by the main frame 14, the suspension bracket 16 and the fuel tank 24.

There is provided a saddle-type vehicle that can secure a sufficient space below a fuel tank and efficiently arrange a fuel filter in a vehicle space while a fuel tank and the fuel filter are made closer to each other. The saddle-type vehicle has a seat frame 17 for supporting a seat 12, and a suspension bracket 16 extending upwards from the rear end of a main frame 14. The front portion of the seat frame 17 is secured to the upper portion of the suspension bracket 16, the front end portion of the seat frame 17 extends to the rear end portion of the fuel tank 24, and a space 241 is formed in front of the seat frame 17 and below the fuel tank 24 by the main frame 14, the suspension bracket 16 and the fuel tank 24.

Compact vehicle drive mechanisms are provided. These compact drive mechanisms, for example, have contributed to the advent of the compact, carry-on bicycles set-forth in the teachings.

This rear wheel suspension device of a motorcycle is disposed so as to be displaced to one lateral side relative to a center portion in the vehicle widthwise direction of the motorcycle. A main frame which forms the front half of a motorcycle frame structure has a single backbone frame extending from a head pipe rearward and obliquely downward in the center portion in the vehicle widthwise direction. A vehicle-body-side support member which extends in the vehicle widthwise direction is supported by a rear portion of the backbone frame. A one end portion of the rear wheel suspension device is rotatably supported by a right end portion of the vehicle-body-side support member.

This rear wheel suspension device of a motorcycle is disposed so as to be displaced to the right lateral side relative to a center portion in the vehicle widthwise direction of the motorcycle. A swingarm-side support member which extends in the vehicle widthwise direction is provided to a swingarm. An upper end portion of the rear wheel suspension device is rotatably supported by a main frame, and a lower end portion of the rear wheel suspension device is rotatably supported at a right end portion of the swingarm-side support member.

A V-belt continuously variable transmission in which an actuator unit for driving a movable sheave is slidably supported by a transmission case that is formed by fastening a plurality of case members with a plurality of fastening members, for ensuring a sufficient space for slidably moving the actuator unit and enhancing workability of mounting and dismounting operation of the actuator unit. A flat mounting surface for mounting the actuator unit is formed on an outer surface of the transmission case. Also, a recessed portion recessed inwardly of the transmission case from the mounting surface is formed to have at an inner end thereof a fastening seat face for a specific fastening member out of the plurality of fastening members, the specific fastening member being disposed at a portion corresponding to the mounting surface. The whole specific fastening member is disposed inwardly of the transmission case relative to the mounting surface.

A V-belt continuously variable transmission in which an actuator unit for driving a movable sheave is slidably supported by a transmission case that is formed by fastening a plurality of case members with a plurality of fastening members, for ensuring a sufficient space for slidably moving the actuator unit and enhancing workability of mounting and dismounting operation of the actuator unit. A flat mounting surface for mounting the actuator unit is formed on an outer surface of the transmission case. Also, a recessed portion recessed inwardly of the transmission case from the mounting surface is formed to have at an inner end thereof a fastening seat face for a specific fastening member out of the plurality of fastening members, the specific fastening member being disposed at a portion corresponding to the mounting surface. The whole specific fastening member is disposed inwardly of the transmission case relative to the mounting surface.

A two-wheeled vehicle includes a frame assembly, a plurality of ground-engaging members for supporting the frame assembly, and a cooling assembly positioned below a head portion of the frame assembly and intermediate vertically-extending frame tubes of the frame assembly. A lower end of the cooling assembly is coupled to a lower end of the vertically-extending frame tubes, and an upper end of the cooling assembly is frictionally retained at an upper end of each of the vertically-extending frame tubes.

A two-wheeled vehicle includes a frame assembly, a plurality of ground-engaging members for supporting the frame assembly, and a cooling assembly positioned below a head portion of the frame assembly and intermediate vertically-extending frame tubes of the frame assembly. A lower end of the cooling assembly is coupled to a lower end of the vertically-extending frame tubes, and an upper end of the cooling assembly is frictionally retained at an upper end of each of the vertically-extending frame tubes.