A product that may include a first axle assembly that may have a lock shaft extendable from the first axle assembly. The lock shaft may be retractable into the first axle assembly. A second axle assembly may have a lock receiver into which the lock shaft may extend when the first and second axle assemblies may be aligned adjacent to one another

A product that may include a first axle assembly that may have a lock shaft extendable from the first axle assembly. The lock shaft may be retractable into the first axle assembly. A second axle assembly may have a lock receiver into which the lock shaft may extend when the first and second axle assemblies may be aligned adjacent to one another

An assembling method of an electric vehicle comprises the steps of: assembling a vehicle body including a frame, wheels and an electric motor; conducting a vehicle body test including confirmation of a state of driving power transmission from the electric motor to the wheels by connecting an electric power supply unit installed in a vehicle body test place to the electric motor of the vehicle body and supplying electric power from the electric power supply unit to the electric motor; detaching the electric power supply unit from the electric motor and transporting the vehicle body which has passed the vehicle body test from the vehicle body test place to a mounting place, in a state in which a battery is not mounted to the vehicle body; and mounting the battery to the transported vehicle body in the mounting place.

An assembling method of an electric vehicle comprises the steps of: assembling a vehicle body including a frame, wheels and an electric motor; conducting a vehicle body test including confirmation of a state of driving power transmission from the electric motor to the wheels by connecting an electric power supply unit installed in a vehicle body test place to the electric motor of the vehicle body and supplying electric power from the electric power supply unit to the electric motor; detaching the electric power supply unit from the electric motor and transporting the vehicle body which has passed the vehicle body test from the vehicle body test place to a mounting place, in a state in which a battery is not mounted to the vehicle body; and mounting the battery to the transported vehicle body in the mounting place.

An electric motorcycle includes a battery pack, a controller and a charging device arranged in sequence along the height direction of the frame. The battery pack and the charging device are positioned on the frame adjacent to the front wheel. The rear suspension comprises a rear fork and a shock absorber connected to the frame by a shaft, the rear fork is connected to the rear wheel, and the electric motor is arranged on the rear fork. The center of gravity of the electric motorcycle is lower. The electric motorcycle can run stably even at a speed of 120 km/h.

A bracket apparatus for mounting a derailleur to a frame of a human-powered vehicle comprises a frame attachment portion, a derailleur attachment portion spaced apart from the frame attachment portion, and a component attachment portion spaced apart from the frame attachment portion and the derailleur attachment portion.

A bracket apparatus for mounting a derailleur to a frame of a human-powered vehicle comprises a bracket body and one of a restriction member and a restriction opening. The bracket body includes a frame attachment portion configured to be attached to the frame of the human-powered vehicle and a derailleur attachment portion to which the derailleur is to be attached. The restriction member is configured to be at least partly provided in the restriction opening to restrict a rotation of the bracket body relative to the frame of the human-powered vehicle in a bracket mounting state where the bracket apparatus is mounted to the frame of the human-powered vehicle.

A bracket apparatus for mounting a derailleur to a frame of a human-powered vehicle comprises a bracket body. The bracket body includes a frame attachment portion configured to be attached to the frame of the human-powered vehicle, a derailleur attachment portion to which the derailleur is to be attached, and a cable groove in which a cable is to be at least partly provided.

A bracket apparatus for mounting a derailleur to a frame of a human-powered vehicle comprises a bracket body. The bracket body includes a frame attachment portion configured to be attached to the frame of the human-powered vehicle, a derailleur attachment portion to which the derailleur is to be attached, and a cable groove in which a cable is to be at least partly provided.

A bicycle frame assembly including a seat tube having first and second end portions (wherein the seat tube second end portion includes a bend and terminates in a first open end facing a first direction), a down tube having first and second end portions (wherein the down tube first end portion is mounted to the seat tube first end portion, and the down tube second end portion includes a bend and terminates in a second open end facing a second direction opposite to the first direction), and a top tube having first and second end portions (wherein the top tube first end portion is mounted to the seat tube second end portion and terminates in a third open end facing the first direction, and the top tube second end portion is mounted to the down tube second end portion and terminates in a fourth open end facing the second direction).