An air-intake device comprises a vehicle body frame including a head box; and a pair of right and left main frames, wherein the head box includes: a casing section which extends between a front opening and a rear opening of the head box and is formed with a main air passage; and a pair of right and left extending sections coupled to the pair of main frames, respectively, wherein at least one extending section is provided with a branch air passage which branches from the main air passage, and wherein a separating wall is provided between the main air passage and the branch air passage and has a communication hole, and wherein when a vehicle body is viewed from a side, at least one extending section is extended rearward to a location at which at least a front region of the communication hole is covered by the extending section.

A motorcycle includes an electric motor having an output shaft defining a motor axis, a rear wheel drivably coupled to the electric motor to propel the motorcycle, a swingarm rotatably supporting the rear wheel, and a frame. The frame includes a main frame member supporting the electric motor and the swingarm. A case of the electric motor is a stressed member of the frame between the main frame member and the swingarm. The swingarm is coupled to the case of the electric motor to define a swingarm pivot axis that is co-axial with the motor axis.

A suspension device includes: a damping device that damps a force generated between a vehicle body and a wheel of a vehicle; a determination unit that determines whether the vehicle is jumping, using an acceleration of the vehicle in a front-rear direction, an acceleration of the vehicle in a left-right direction, and an acceleration of the vehicle in a vertical direction; and a damping force control unit that increases a damping force of the damping device so as to be greater than the damping force generated when the determination unit does not determine that the vehicle is jumping, when the determination unit determines that the vehicle is jumping.

A front fender is provided in front of an air-cooled engine which is a drive source of a motorcycle. An air introduction hole which opens frontward is formed at a front part of a cylinder head of the air-cooled engine. A space around a plug attachment portion for a spark plug and a space in front of the cylinder head communicate with each other through the air introduction hole. A guide portion for guiding incoming wind toward the air introduction hole is formed at a rear part of the front fender.

A tilting vehicle includes a frame unit, a tilting mechanism and two front wheels. The frame unit includes a head tube extending generally along an up-down direction, and a main frame detachably connected to the head tube. The tilting mechanism includes one crossbar pivotally connected to the head tube and extending along a left-right direction, and two connecting rods extending along the up-down direction, being opposite to each other along the left-right direction, and being pivotally connected to opposite ends of the one crossbar, respectively, such that the connecting rods are movable along the up-down direction relative to the head tube. The front wheels are rotatably mounted to the connecting rods, respectively.

A solar-powered vehicle that includes a body having opposing sides and defining a cavity; two or more wheels; a first and second solar panel assembly respectively disposed on the opposing sides of the body; one or more electric motor disposed within the cavity of the body between the first and second solar panel assemblies, the one or more electric motors configured to rotate at least one of the two or more wheels; and one or more electric battery disposed within the cavity of the body between the first and second solar panel assemblies, the one or more electric batteries configured to power the one or more electric motors and to be charged by electric current generated by the first and second solar panel assemblies.

A solar-powered vehicle that includes a body having opposing sides and defining a cavity; two or more wheels; a first and second solar panel assembly respectively disposed on the opposing sides of the body; one or more electric motor disposed within the cavity of the body between the first and second solar panel assemblies, the one or more electric motors configured to rotate at least one of the two or more wheels; and one or more electric battery disposed within the cavity of the body between the first and second solar panel assemblies, the one or more electric batteries configured to power the one or more electric motors and to be charged by electric current generated by the first and second solar panel assemblies.

A two-wheeled vehicle includes a frame assembly having a front end and a rear end extending along a longitudinally-extending centerline, a front ground-engaging member operably coupled to the front end of the frame assembly at a front rotational axis, and a rear ground-engaging member operably coupled to the rear end of the frame assembly at a rear rotational axis. A wheel base is defined between the front and rear rotational axes and a vertically-extending centerline of the vehicle extends vertically at the midpoint of the wheel base and is perpendicular to the longitudinally-extending centerline. The vehicle also includes a fuel tank, an airbox assembly, and a battery all positioned relative to the vertically-extending centerline of the vehicle.

A two-wheeled vehicle includes a frame assembly having a front end and a rear end extending along a longitudinally-extending centerline, a front ground-engaging member operably coupled to the front end of the frame assembly at a front rotational axis, and a rear ground-engaging member operably coupled to the rear end of the frame assembly at a rear rotational axis. A wheel base is defined between the front and rear rotational axes and a vertically-extending centerline of the vehicle extends vertically at the midpoint of the wheel base and is perpendicular to the longitudinally-extending centerline. The vehicle also includes a fuel tank, an airbox assembly, and a battery all positioned relative to the vertically-extending centerline of the vehicle.

A suspension monitoring and adjustment system for an off-road vehicle includes a distance sensor arranged to measure shock displacement of a suspension of the vehicle. The system may include an output device configured to output shock displacement data generated by the distance sensor and a processor or programmable circuit operable to produce a visual representation of the shock displacement data output by the output device. The system may include a processor or programmable circuit operable to generate an adjustment signal based on shock displacement data generated by the distance sensor and a suspension adjuster arranged to adjust the suspension of the vehicle in response to the adjustment signal.