A two-wheeled vehicle which includes a two-wheeled vehicle body, a front wheel and a rear wheel respectively rotatably installed at a front and a rear of the two-wheeled vehicle body, and a steering system steering the front wheel is disclosed. The two-wheeled vehicle includes auxiliary wheels connected to the front wheel on both sides of the two-wheeled vehicle body and steered together with the front wheel by the steering system, lifting devices configured to adjust distances of the auxiliary wheels from the ground, and gap adjusting devices configured to adjust lateral gaps of the auxiliary wheels from the two-wheeled vehicle body. The auxiliary wheels are spaced apart from the ground while traveling straight. And an inclination of the two-wheeled vehicle body while turning is limited as one of the auxiliary wheels comes into contact with the ground.

A Device is fitted to a traditional bicycle to facilitate a riding style in which the rear wheel of the bicycle can slid sideways or drifted in a controlled manner by harnessing the rider's backward pedaling motions to thrust a block of UHMW plastic downward to the road surface.

An exercise training device for use with a motorcycle for working out to improve a rider's physical fitness is provided. The training device includes a base, a mounting plate, and a plurality of support legs extending from the base. A coil spring is vertically mounted between the base and the mounting plate. A motorcycle can be releasably affixed to the mounting plate with a plurality of hold downs. The coil spring deflects in response to lateral forces such that the affixed motorcycle can pitch and roll when subject to sufficient force.

A child's ride-on toy comprising a push rod and a removable cart connected to the child's ride-on toy is described. The push rod of a child's ride-on toy typically extends upward and rearward from a connector at the rear of the frame of the child's ride-on toy to a handle at a height that may be easily manipulated by an adult. The push rod may be manipulated by an adult to control the speed and direction of the child's ride-toy or removed and connected to the cart for use of the cart independently of the ride-on toy.

A child's ride-on toy comprising a push rod and a removable cart connected to the child's ride-on toy is described. The push rod of a child's ride-on toy typically extends upward and rearward from a connector at the rear of the frame of the child's ride-on toy to a handle at a height that may be easily manipulated by an adult. The push rod may be manipulated by an adult to control the speed and direction of the child's ride-toy or removed and connected to the cart for use of the cart independently of the ride-on toy.

A tricycle may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle. A rider handle, in the first mode, may be configured to be rotationally coupled with the stem in a manner permitting a tricycle rider to exert forces on the rider handle and thereby turn the fork, and the rider handle in the second mode, being configured to be rotationally uncoupled from the stem, preventing forces on the rider handle from turning the fork. At least one rotation restrictor may be included for preventing the front wheel from turning to a position where the front wheel axis leads the fork axis, and for maintaining the front wheel axis in a position trailing the fork axis both when the tricycle is propelled by a tricycle rider in the first mode and when the tricycle is pushed from behind in the second mode.

A tricycle may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle. In both such first and second modes, the frame of the tricycle is configured to rotatably support the rear wheels and configured to support the head tube at a distance from the rear wheels such that a distance between the head tube and rear wheels need not necessarily be changed even when the front wheel axis location is changed from one mode to another.

A tricycle may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle. In both such first and second modes, the frame of the tricycle is configured to rotatably support the rear wheels and configured to support the head tube at a distance from the rear wheels such that a distance between the head tube and rear wheels need not necessarily be changed even when the front wheel axis location is changed from one mode to another.

A bicycle simulator (1) is basically constituted by a bicycle pre-arranged for static or pseudo-static use. The bicycle comprises front and rear supports (13, 14) for resting on the floor (12) that simulate the contact of the wheels of a normal bicycle on the road. The two supports are preferably constituted by a front supporting wheel (13) and by a rear supporting wheel (14) that rest on the floor and support in a freely rotatable way the respective wheel axles (3, 11). Rotatably mounted within at least the front supporting wheel is a flywheel (F1, F2). The front flywheel (F1) is set in rotation by a respective electric motor (M) or by a transmission driven by the pedals, for creating a stabilizing gyroscopic effect, which enables the user to maintain his balance when pedaling with the bicycle stationary, resting on the floor via the supporting wheels in a static condition. The crank axle is connected to a driven member, which is independent of said front support (13) and of said rear support (14) and is constituted by a rear flywheel or even by the front flywheel itself.

A bicycle simulator (1) is basically constituted by a bicycle pre-arranged for static or pseudo-static use. The bicycle comprises front and rear supports (13, 14) for resting on the floor (12) that simulate the contact of the wheels of a normal bicycle on the road. The two supports are preferably constituted by a front supporting wheel (13) and by a rear supporting wheel (14) that rest on the floor and support in a freely rotatable way the respective wheel axles (3, 11). Rotatably mounted within at least the front supporting wheel is a flywheel (F1, F2). The front flywheel (F1) is set in rotation by a respective electric motor (M) or by a transmission driven by the pedals, for creating a stabilizing gyroscopic effect, which enables the user to maintain his balance when pedaling with the bicycle stationary, resting on the floor via the supporting wheels in a static condition. The crank axle is connected to a driven member, which is independent of said front support (13) and of said rear support (14) and is constituted by a rear flywheel or even by the front flywheel itself.