A self-powered motorcycle or bicycle includes: a pair of shock absorber frame housings (101), each having a cylindrical hollow inside, a closed upper end portion, a split space formed at a lower end portion, rack gear moving holes (101a) respectively formed in both sides of the outer wall in a longitudinal direction, and self-powered generators (100) respectively mounted on both sides of the outer wall, the pair of shock absorber frame housings being mounted to face each other; a pair of shock absorber frames (102); disc-shaped partitions (102c) fixed in a horizontal direction; anti-rotation protrusions (104a) formed at both sides of the spring guide in a longitudinal direction; and anti-rotation protrusion guide holes (102b) formed at both sides of the shock absorber frame.

A motorcycle, or saddle type vehicle, is disclosed that may have at least one seat and at least two wheels, at least one hub electric motor. A large dry storage compartment may be positioned between the rider and steering mount. A rechargeable battery and battery management system may be located below the storage compartment in a battery housing, where the battery housing may be a structural component of the chassis. A rear electronics housing may be attached to and located behind the battery housing, and may contain major electrical components such as electric motor controller and contactors. Two structural members, or frame side rails, may form sides of the storage compartment and extend between the electronics housing and steering mount. The electronics housing may also connect to the battery housing such that the battery housing reinforces and strengthens the chassis, or structural frame. A secondary storage compartment may be located under the seat. Additionally, the storage compartments may have electronic locking mechanisms that are activated via a wireless connection to a remote electronic device. The rear suspension may include a swingarm on one side of the vehicle.

To provide a rear wheel braking device for a motorcycle that can reduce an unsprung mass and the number of pieces of components on the rear wheel side of a shaft drive type motorcycle. In a rear wheel braking device for a motorcycle transmitting a drive force of a power unit of a motorcycle to a rear wheel through a drive shaft that extends in a vehicle longitudinal direction, the drive shaft includes a propeller shaft that is connected to a rear end of an output shaft through a universal joint, the output shaft protruding to the vehicle body rear side from a case member of the power unit. A brake disk is attached to the output shaft, the brake disk being braked by a rear wheel brake caliper. The rear wheel brake caliper is fixed to a bracket that is arranged in the case member, and is disposed on the vehicle body upper side of the brake disk.

A ride-height robust sensor measures shock absorber travel and monitors absolute ride-height in a front and rear shock absorber of a motorcycle regardless of varying cargo weights. Rather than modifying the frame, the sensor is mountable directly to a motorcycle rear shock absorber using a novel upper mount and lower mount. A second sensor is mountable to a front shock absorber using a novel ride-height upper fork bracket and ride-height lower fork bracket. A novel ride-height display module and attendant control module provide a visual display of shock height using a multicolored six LED array. User-customised ride-height and dismount height are activated upon motor ignition and cutoff using a solenoid control module. Components are electronically isolated from the motorcycle ignition system and shock solenoids for accuracy and reliability. The ride-height controller enters sleep mode when not in use and is installable by the user.

A shock absorber includes a cylinder in which oil is sealed, a piston slidably fitted into the cylinder, a piston rod connected to the piston and extending to the outside of the cylinder, and a damping force generating apparatus controlling a flow of the oil generated by the sliding of the piston inside the cylinder. The damping force generating apparatus includes a valve body generating a damping force by being opened and closed on a flow path in which the oil flows, a valve seat closing the flow path when the valve body is seated, and an actuator generating thrust to the valve body in a valve closing direction. The valve seat has a first elastic body which is elastically deformable in the valve closing direction of the valve body.

An object is to provide a front fork including a stroke sensor as well as a damping force variable device, and allowing structure of the front fork to be simplified. A front fork of an embodiment includes a pair of a first leg and a second leg. The first leg includes a stroke sensor section that detects a stroke amount of the front fork as a distance between extension and compression of the front fork. The second leg includes a damping force variable device that controls a flow of a working fluid contained in the second leg to enable a damping force to be varied.

A vehicle includes upper frames, lower frames, a front frame, a rear frame, a pair of front wheels, a pair of rear wheels, a bar handle to steer the pair of front wheels, a drive motor to drive the pair of rear wheels, a battery to supply electric power to the drive motor, and a straddled seat provided at a higher position than the drive motor. The drive motor and the battery are located in a region surrounded by the upper frames, the lower frames, the front frame, and the rear frame in a side view of the vehicle.

Altering the damping rate of a vehicle suspension damper. A pressure of a damping fluid is exerted against a second valve mechanism connected to the vehicle suspension damper. The pressure of the damping fluid is increased beyond a threshold of the second valve mechanism that is adjustable by an adjustment member. The adjustment member is exposed through a high pressure side of the vehicle suspension damper. The second valve mechanism is then opened.

Provided is a vehicle speed-change system including the following: a transmission positioned to the rear of a crank shaft of an engine; a transmission case that retains the transmission; a shift mechanism that has a shift cam which performs a speed-change operation of the transmission; and a shift actuator that operates the shift cam. The transmission includes a counter shaft positioned to the rear of the crank shaft, and a drive shaft to which rotation of the counter shaft is transmitted. The shift cam is positioned further to the rear than the counter shaft, and the shift actuator is arranged in a rear portion of the transmission case and to the rear of the shift cam.

A rear wheel suspension device includes: a swing arm swingably supported with respect to a vehicle body frame, the swing arm being configured to rotatably support a rear wheel; a rear cushion configured to be extended and contracted in accordance with swing of the swing arm; a cushion lever coupled to a lower end portion of the rear cushion; a cushion rod coupling the cushion lever and the swing arm; an accumulator storing a working fluid that extends and contracts the cushion rod; and an accumulator bracket supporting the accumulator. A vehicle height is adjusted by displacement of the swing arm in accordance with extension and contraction of the cushion rod. A muffler pipe extends rearward from an engine through a side of the accumulator. The accumulator bracket is configured to separate the accumulator and the muffler pipe.