A multifunctional sidecar for a motorcycle comprises a frame detachably provided at a side of the motorcycle and having a main wheel at a side thereof, a base plate rotatably coupled to a first side of the frame and folded in an upright position or unfolded to overlap a top of the frame, a side plate rotatably coupled to a second side of the frame and folded in an upright position or unfolded to extend from the second side of the frame, a rear plate rotatably coupled to a rear portion of the frame and folded in an upright position or unfolded to extend from the rear portion of the frame, supports supporting the side plate and the rear plate when the side plate and the rear plate are in the unfolded positions, and a coupling device connecting the sidecar with the motorcycle.

A multifunctional sidecar for a motorcycle comprises a frame detachably provided at a side of the motorcycle and having a main wheel at a side thereof, a base plate rotatably coupled to a first side of the frame and folded in an upright position or unfolded to overlap a top of the frame, a side plate rotatably coupled to a second side of the frame and folded in an upright position or unfolded to extend from the second side of the frame, a rear plate rotatably coupled to a rear portion of the frame and folded in an upright position or unfolded to extend from the rear portion of the frame, supports supporting the side plate and the rear plate when the side plate and the rear plate are in the unfolded positions, and a coupling device connecting the sidecar with the motorcycle.

A bicycle trailer latch comprises a skewer engaging surface that is desirably at least in part spherical, such as hemispherical. When engaging a bicycle skewer at the rear wheel of a bicycle, the spherical engagement surface allows more freedom of movement of the bicycle trailer relative to the skewer during towing. This enhances the trailers ability to track the movement of the bicycle. The latch can comprise a housing with a housing opening sized to receive the end portion of the bicycle wheel skewer. A stop inside the housing is pivotal to stop closed and stop open positions. In the stop closed position, the housing opening is sufficiently to block the decoupling of the latch from bicycle skewer. In the stop open position, the stop opens the housing opening sufficiently to permit passage of the end portion of the skewer through the housing opening.

A bicycle trailer pivot assembly can comprise first and second yoke arms with respective first and second end portions and a pivot coupling the first end portion of each yoke arm to a bicycle trailer frame. The first end portions the yoke arms comprise respective first and second hinge portions that interfit and that receive a hinge pin that couples the first end portions together and to the bicycle trailer frame for pivoting about an upright axis. The first and second hinge portion comprise respective stops positioned to engage one another to limit the maximum distance to which the second end portions of the first and second yoke arms can be spread apart. The first and second hinge portions can comprise respective stops that limit both the maximum and minimum spread apart positions of the second end portions of the yoke arms.

A bicycle trailer pivot assembly can comprise first and second yoke arms with respective first and second end portions and a pivot coupling the first end portion of each yoke arm to a bicycle trailer frame. The first end portions the yoke arms comprise respective first and second hinge portions that interfit and that receive a hinge pin that couples the first end portions together and to the bicycle trailer frame for pivoting about an upright axis. The first and second hinge portion comprise respective stops positioned to engage one another to limit the maximum distance to which the second end portions of the first and second yoke arms can be spread apart. The first and second hinge portions can comprise respective stops that limit both the maximum and minimum spread apart positions of the second end portions of the yoke arms.

A tilt control system for a sidecar and a motorcycle. The tilt control system can include a main frame, a tilting frame, and an actuator. The actuator can be coupled to the main frame and to the tilting frame, and can be configured to control tilting of the tilting frame relative to the main frame. The tilt control system can include a sensor, and a controller in communication with the actuator and the sensor. The controller can be configured to determine an operating parameter based on sensor data received from the sensor, compare the operating parameter to a threshold criteria, and cause the actuator to control the orientation of the tilting frame relative to main frame, based on the comparison of the operating parameter to the threshold criteria.

A tilt control system for a sidecar and a motorcycle. The tilt control system can include a main frame, a tilting frame, and an actuator. The actuator can be coupled to the main frame and to the tilting frame, and can be configured to control tilting of the tilting frame relative to the main frame. The tilt control system can include a sensor, and a controller in communication with the actuator and the sensor. The controller can be configured to determine an operating parameter based on sensor data received from the sensor, compare the operating parameter to a threshold criteria, and cause the actuator to control the orientation of the tilting frame relative to main frame, based on the comparison of the operating parameter to the threshold criteria.

A bicycle skewer for supporting a wheel of a bicycle between bicycle forks on opposite sides of the supported bicycle wheel comprises a skewer body having first and second end portions and a longitudinal axis about which a supported bicycle wheel pivots. In accordance with an embodiment, a first coupler is coupled to the first end portion of the skewer body and a second coupler is coupled to the second end portion of the skewer body; the bicycle wheel and forks being positioned between the first and second couplers. In addition, each of the first and second couplers comprise exterior surfaces at least a portion of which are spherical.

A multifunctional sidecar for a motorcycle comprises a frame detachably provided at a side of the motorcycle and having main wheel at a side thereof, a base plate rotatably coupled to a first side of the frame and folded in an upright position or unfolded to overlap a top of the frame, a side plate rotatably coupled to a second side of the frame and folded in an upright position or unfolded to extend from the second side of the frame, a rear plate rotatably coupled to a rear portion of the frame and folded in an upright position or unfolded to extend from the rear portion of the frame, supports supporting the side plate and the rear plate when the side plate and the rear plate are in the unfolded positions, and a coupling device connecting the sidecar with the motorcycle, a buoyant seating member having a seat and detachably provided on the top of the frame; as the side and rear part of the sidecar may be unfolded and supported by supports, the sidecar may be utilized as a camping deck or bench; and the main body may be utilized as a carrier or storage, with the seating member removed and the bottom plate installed.

A multifunctional sidecar for a motorcycle comprises a frame detachably provided at a side of the motorcycle and having main wheel at a side thereof, a base plate rotatably coupled to a first side of the frame and folded in an upright position or unfolded to overlap a top of the frame, a side plate rotatably coupled to a second side of the frame and folded in an upright position or unfolded to extend from the second side of the frame, a rear plate rotatably coupled to a rear portion of the frame and folded in an upright position or unfolded to extend from the rear portion of the frame, supports supporting the side plate and the rear plate when the side plate and the rear plate are in the unfolded positions, and a coupling device connecting the sidecar with the motorcycle, a buoyant seating member having a seat and detachably provided on the top of the frame; as the side and rear part of the sidecar may be unfolded and supported by supports, the sidecar may be utilized as a camping deck or bench; and the main body may be utilized as a carrier or storage, with the seating member removed and the bottom plate installed.