A two wheel tandem vehicle is propelled by hand-grasped poles. A front wheel on a forward member and a rear wheel on a rearward member align along a longitudinal axis. The forward member pivots about a substantially vertical steering axis. A saddle and footholds support the rider and together with an accessory contact means allow the rider to balance and steer the device. The rider's hands do not contact the vehicle but are used to propel the vehicle with the poles.

A two wheel tandem vehicle is propelled by hand-grasped poles. A front wheel on a forward member and a rear wheel on a rearward member align along a longitudinal axis. The forward member pivots about a substantially vertical steering axis. A saddle and footholds support the rider and together with an accessory contact means allow the rider to balance and steer the device. The rider's hands do not contact the vehicle but are used to propel the vehicle with the poles.

An object of the invention is to provide a personal mobility that is able to turn by movement of the gravitational center of a passenger, without individually controlling each motor that drives the left and right wheels, and without using any special parts. The personal transporter includes left and right driving wheels (21) as front wheels, left and right casters (22) as rear wheels, and two motors (31) for independently driving the left and right driving wheels (21). By giving a camber angle, in which an upper part inclines inward when viewed from the front, with respect to the left and right casters (22), the torque or the applied voltage of the two motors (31) is the same, the caster (22) rotates in the direction of movement of gravitational center to act as a steering wheel, and it is possible to turn a personal transporter in the movement direction of the gravitational center.

An object of the invention is to provide a personal mobility that is able to turn by movement of the gravitational center of a passenger, without individually controlling each motor that drives the left and right wheels, and without using any special parts. The personal transporter includes left and right driving wheels (21) as front wheels, left and right casters (22) as rear wheels, and two motors (31) for independently driving the left and right driving wheels (21). By giving a camber angle, in which an upper part inclines inward when viewed from the front, with respect to the left and right casters (22), the torque or the applied voltage of the two motors (31) is the same, the caster (22) rotates in the direction of movement of gravitational center to act as a steering wheel, and it is possible to turn a personal transporter in the movement direction of the gravitational center.

A gear driven by wobble movement contains an ergonomic pendulum (D), a centric disk (C) and a flywheel (A) having a common axis (S) of rotation. In the axis (S) of rotation a shaft (H) is placed which is joined to the pendulum (D). The mutual concentric position of the centric disk (C) and the flywheel (A) is delimitated by planet disk (B) which contacts the periphery of the centric disk (C) and the internal periphery of the flywheel (A) and is joined rotatably to the supporting structure (T). The supporting structure (T) is fixed to the linked structure which fixes the supporting structure (T), together with the planet disk (B), against rotation with respect to the axis (S) of rotation. A first freewheel (V1) is situated between the shaft (H) and flywheel (A) and a second freewheel (V2) is situated between the shaft (H) and centric disc (C).

A gear driven by wobble movement contains an ergonomic pendulum (D), a centric disk (C) and a flywheel (A) having a common axis (S) of rotation. In the axis (S) of rotation a shaft (H) is placed which is joined to the pendulum (D). The mutual concentric position of the centric disk (C) and the flywheel (A) is delimitated by planet disk (B) which contacts the periphery of the centric disk (C) and the internal periphery of the flywheel (A) and is joined rotatably to the supporting structure (T). The supporting structure (T) is fixed to the linked structure which fixes the supporting structure (T), together with the planet disk (B), against rotation with respect to the axis (S) of rotation. A first freewheel (V1) is situated between the shaft (H) and flywheel (A) and a second freewheel (V2) is situated between the shaft (H) and centric disc (C).

Provided is an inverted pendulum vehicle including a display unit for providing a guide on an operation for putting the vehicle body into the tilted position from the upright position or into the upright position from the tilted position according to a state of the vehicle. In particular, the display unit indicates a direction in which the vehicle body is required to be moved when placing the vehicle body from the tilted position to the upright position and from the upright position to the tilted position.

A saddle-ride-type vehicle having a side cover for enhancing the assembling property and external appearance. In a motorcycle including a side cover which has an upper side cover and a lower side cover in a state where an end portion of the upper side cover and an end portion of the lower side cover overlap with each other, the side cover has a joining portion formed by making the upper side cover overlap with an outer side of the lower side cover. A holding portion is formed by making the lower side cover overlap with an outer side of the upper side cover. A fixing portion is provided where the upper side cover and the lower side cover are made to overlap with each other in the same overlapping state as the joining portion is disposed in the vicinity of the joining portion.

A saddle-ride-type vehicle having a side cover for enhancing the assembling property and external appearance. In a motorcycle including a side cover which has an upper side cover and a lower side cover in a state where an end portion of the upper side cover and an end portion of the lower side cover overlap with each other, the side cover has a joining portion formed by making the upper side cover overlap with an outer side of the lower side cover. A holding portion is formed by making the lower side cover overlap with an outer side of the upper side cover. A fixing portion is provided where the upper side cover and the lower side cover are made to overlap with each other in the same overlapping state as the joining portion is disposed in the vicinity of the joining portion.

An auxiliary bicycle transmission for a bicycle has a crossbar formed by a telescoping bar slidably mounted in an outer channel member. One end of a half chain or half V-belt is connected to the telescoping bar, the other end is connected by means of a spring to the upper end of a down tube, and the chain or V-belt that engages a freewheeling sprocket or pulley so that when the telescoping bar extends out of the outer channel member against the spring force, the freewheeling sprocket rotates and provides additional motive force to the standard transmission of the bicycle.