An electronic device is related to a human-powered vehicle operating device that includes an operating mechanism, which is for operating at least one of a human-powered vehicle transmission device and a human-powered vehicle braking device, and at least one operating member. The electronic device comprises a storage, an electronic controller, and a communication unit. The storage stores setting information related to an operation of the at least one operating member and to an output destination device. The electronic controller is configured to generate an output signal corresponding to the operation of the at least one operating member based on the setting information. The communication unit transmits the output signal to the output destination device that includes at least one of a game device, a training device, an audio device, and a video device.

A foldable electric scooter and a manufacture method of the same. The foldable electric scooter includes a main body assembly, a front fork assembly located at the front end of the main body assembly, a rear fork assembly located at the rear end of the main body assembly, a telescoping plate assembly located on top of the front fork assembly and a handlebar assembly located on top of the telescoping plate assembly. The foldable electric scooter has a double headset design that increases a rake angle for more steering stability while still keeping the steering upright for an upright holding of the handlebars. The foldable electric scooter is manufactured by stamping of flat plate material.

A foldable electric scooter and a manufacture method of the same. The foldable electric scooter includes a main body assembly, a front fork assembly located at the front end of the main body assembly, a rear fork assembly located at the rear end of the main body assembly, a telescoping plate assembly located on top of the front fork assembly and a handlebar assembly located on top of the telescoping plate assembly. The foldable electric scooter has a double headset design that increases a rake angle for more steering stability while still keeping the steering upright for an upright holding of the handlebars. The foldable electric scooter is manufactured by stamping of flat plate material.

A drive train comprises a sprocket arrangement and a force-transmission coefficient. The sprocket arrangement includes a plurality of rear sprockets and a plurality of gear ratios respectively corresponding to the plurality of rear sprockets. The plurality of gear ratios includes a largest gear ratio and a smallest gear ratio. The sprocket arrangement includes at least one individual sprocket-space provided between two adjacent rear sprockets among the plurality of rear sprockets. The force-transmission coefficient is obtained by dividing a total gear range quotient by a total number of the at least one individual sprocket-space. The force-transmission coefficient is equal to or larger than 0.97 and is equal to or smaller than 1.36. The total gear range quotient is obtained by dividing the largest gear ratio by the smallest gear ratio.

A bicycle component comprises a base member and a first alumite layer. The base member is made of an aluminum alloy. The first alumite layer is provided on the base member. The first alumite layer has a thickness that is equal to or larger than 1.0 m.

A bicycle component comprises a base member and a first alumite layer. The base member is made of an aluminum alloy. The first alumite layer is provided on the base member. The first alumite layer has a thickness that is equal to or larger than 1.0 m.

A recumbent bicycle for recumbent riding includes a frame that is tubular and elongated. A handlebar, which is ape hanger-styled, is rotationally coupled to a front of the frame. A first wheel and a second wheel are rotationally coupled to a rear of the frame and the handlebar, respectively. A seat is coupled to a top of the frame. A sprocket, which is coupled to the frame proximate to the front, is operationally coupled to the first wheel. A pair of pedals is coupled to and extends from the sprocket. Each pedal is configured to position a respective foot of the user so that the user is positioned to compel rotation of the sprocket concurrent with the pedals. The sprocket is positioned to compel rotation of the first wheel to locomote the frame and the user. The pedals also are configured to be reversibly rotated to brake the first wheel.

A recumbent bicycle for recumbent riding includes a frame that is tubular and elongated. A handlebar, which is ape hanger-styled, is rotationally coupled to a front of the frame. A first wheel and a second wheel are rotationally coupled to a rear of the frame and the handlebar, respectively. A seat is coupled to a top of the frame. A sprocket, which is coupled to the frame proximate to the front, is operationally coupled to the first wheel. A pair of pedals is coupled to and extends from the sprocket. Each pedal is configured to position a respective foot of the user so that the user is positioned to compel rotation of the sprocket concurrent with the pedals. The sprocket is positioned to compel rotation of the first wheel to locomote the frame and the user. The pedals also are configured to be reversibly rotated to brake the first wheel.

A bicycle sprocket comprises a sprocket body, a plurality of sprocket teeth, and at least one chain-supporting portion. The plurality of sprocket teeth includes at least one first tooth and at least one second tooth. The at least one chain-supporting portion is arranged on the sprocket body to face the bicycle chain in an axial direction parallel to a rotational center axis of the bicycle sprocket without being received within an outer link space and an inner link space in a state where the plurality of sprocket teeth engages with a bicycle chain. The at least one chain-supporting portion is spaced apart from at least one of at least one first tooth and the at least one second tooth in the axial direction.

A bicycle sprocket comprises a sprocket body, a plurality of sprocket teeth, and at least one chain-supporting portion. The plurality of sprocket teeth includes at least one first tooth and at least one second tooth. The at least one chain-supporting portion is arranged on the sprocket body to face the bicycle chain in an axial direction parallel to a rotational center axis of the bicycle sprocket without being received within an outer link space and an inner link space in a state where the plurality of sprocket teeth engages with a bicycle chain. The at least one chain-supporting portion is spaced apart from at least one of at least one first tooth and the at least one second tooth in the axial direction.