A method is described for determining a position of a two-wheeled vehicle. The single-track vehicle has a vehicle path yaw rate when driving along curves and a yaw rate according to the inclined orientation which differs from the vehicle path yaw rate. An inclined orientation of the single-track vehicle and a speed of the single-track vehicle are measured. The vehicle path yaw rate of the single-track vehicle is determined from the measured inclined orientation and the measured speed. A device for carrying out the method is also described.

A self-aligning tool guide has a holder for securing a portable power tool for working on a ceiling, a lifting mechanism, and a self-balancing chassis. The holder is mounted on the lifting mechanism. The lifting mechanism has a propulsion system for raising the holder parallel to a lifting axis. The self-balancing chassis has two wheels on a wheel axis and a drive coupled to the two wheels. A sensor serves for detecting a contact pressure of the holder, the contact pressure acting in the direction of gravitational force. The control station activates the propulsion system depending on the detected contact pressure.

Motorized hub assemblies for use with platforms and the corresponding motorized platforms are presented. At least one of the hub assemblies can be a motor and can contain an internal motor to propel the platform when activated. In some embodiments, the motorized platform has two sets of motorized wheels or two sets or motorized treads for differential rate maneuvering. In some embodiments, different base platforms are mounted to a single set of wheels or a single tread to provide a sporty style ride. A handlebar can also be implemented for greater stability. In all cases, there is no requirement for an electronic stabilization platform.

A swingarm supporting structure can prevent rigidity of a case from becoming excessive and can improve a degree of freedom of design. The swingarm supporting structure includes: a case in which a power unit is stored; and a bracket for freely pivotally supporting a swingarm up and down through a pivot shaft. The swingarm supports an axle, and the bracket is detachably fixed to the case in a fixed direction intersecting the pivot shaft.

A motorcycle includes a front wheel drive train that supplies power to a front wheel and a rear wheel drive train that supplies power to a rear wheel. The front wheel drive train is configured to drive the front wheel at a selected rate that is faster than a rate at which the rear wheel drive train drives the rear wheel. Driving the front wheel at the selected faster rate relative to the rear wheel provides enhanced steering capabilities in soft terrain, as the front wheel pulls the motorcycle in a direction that the front wheel is pointed.

A motorcycle includes a front wheel drive train that supplies power to a front wheel and a rear wheel drive train that supplies power to a rear wheel. The front wheel drive train is configured to drive the front wheel at a selected rate that is faster than a rate at which the rear wheel drive train drives the rear wheel. Driving the front wheel at the selected faster rate relative to the rear wheel provides enhanced steering capabilities in soft terrain, as the front wheel pulls the motorcycle in a direction that the front wheel is pointed.

A self-propelled device is disclosed that includes a center of mass drive system. The self-propelled device includes a substantially cylindrical body and wheels, with each wheel having a diameter substantially equivalent to the body. The self-propelled device may further include an internal drive system with a center of mass below a rotational axis of the wheels. Operation and maneuvering of the self-propelled device may be performed via active displacement of the center of mass.

An electro-mechanical gyro-balanced unicycle includes a wheel provided with a first motor, a housing provided outside the wheel and hollow pedals respectively provided at both sides of the housing. The pedal is provided with an electro-mechanical gyro assembly, and the electro-mechanical gyro assembly includes a second motor and a rotor capable of being driven by the second motor to rotate at a high speed so as to produce torques in a horizontal plane. The unicycle has a simple structure, can enable a beginner to be capable of quickly getting on the unicycle without any external assistant force, and can still well realize self-balance in left and right directions over time.

A ride-on vehicle is provided that has optional remote control capabilities. The ride-on vehicle comprises front and rear wheels, a steering wheel, a steering motor, a drive motor, an accelerator, a parent override switch and a main controller for controlling the drive motor and the steering motor based on input signals. A remote control is also provided to send signals to the main controller. The main controller provides for three modes of operation of the ride-on vehicle, including a child only drive mode, a partial child and partial remote drive mode, and a full remote drive mode, and wherein the main controller switches between the three modes of operation in real time based on signals received from the remote control and the parent override switch.

An electric vehicle is provided with a highly simple and convenient structure for detachably retaining a battery, and enabling the vehicle to be lifted by hand. A battery case of the electric vehicle includes an upper extension (80F, 80G) including an upper member (80G) configured to be gripped by a hand for lifting the vehicle, and defining a gripping space (112) for receiving the hand between an upper surface of the battery received in the battery case and the upper member, and a latching structure (102, 106, 120) is provided between an upper part of the battery and an opposing part of the battery case, the latching structure including an operating member (104) positioned inside the gripping space.