An electrically actuated component of a bicycle includes a first controller configured to receive a data stream from a second controller. The data stream includes one or more packets received by the first controller. For each of the one or more packets received by the first controller, the first controller is configured to identify a number of the one or more packets of the data stream received by the first controller, and compare the identified number of packets to a predetermined threshold number of packets. After all packets of the one or more packets of the data stream have been received by the first controller, the first controller is configured to initiate, based on the respective comparison, an action of the electrically actuated component or another electrically actuated component of the bicycle when the identified number of packets is less than the predetermined threshold number of packets.

A seat angle adjustment device includes a seat tube, a lower clamp, an upper clamp, two nuts, and two bolts. The top end of the seat tube has two through holes and a convex curved surface. The lower clamp has two lower clamping grooves and a concave curved surface abutted against the convex curved surface of the seat tube. The upper clamp has two upper clamping grooves. Two saddle rail clamping grooves are formed between the upper and lower clamping grooves, and each have a position lower than the vertex of the convex curved surface of the seat tube. The nuts and the bolts are screwed to each other. One of them are disposed to the upper clamp and the other of them are disposed in the through holes. Thus, the present invention allows the lifting stroke of a seat to be increased when used with a liftable seatpost.

A seat angle adjustment device includes a seat tube, a lower clamp, an upper clamp, two nuts, and two bolts. The top end of the seat tube has two through holes and a convex curved surface. The lower clamp has two lower clamping grooves and a concave curved surface abutted against the convex curved surface of the seat tube. The upper clamp has two upper clamping grooves. Two saddle rail clamping grooves are formed between the upper and lower clamping grooves, and each have a position lower than the vertex of the convex curved surface of the seat tube. The nuts and the bolts are screwed to each other. One of them are disposed to the upper clamp and the other of them are disposed in the through holes. Thus, the present invention allows the lifting stroke of a seat to be increased when used with a liftable seatpost.

A bicycle and method and bicycle assembly for a bicycle including a control device and at least one bicycle component whose operating state is variable during operation. An acoustic device with a sound converter is included for outputting information, controlled by the control device, on the operating state of the bicycle component by means of the acoustic device, and/or for capturing noises by means of the acoustic device and converting these to noise signals and utilizing them for controlling.

A seat rail installed on a vehicle body of a motorcycle. The seat rail includes an upper lateral member located on a lateral side in a width direction of the vehicle body and made of a fiber reinforced resin, the upper lateral member including a lower flange that protrudes in the width direction of the vehicle body from a lower edge of the upper lateral member. Furthermore, the seat rail includes a lower lateral member located downward from the upper lateral member and made of metal, and a lower surface of the lower flange of the upper lateral member is joined to an upper surface of the lower lateral member by adhesive.

A seat rail installed on a vehicle body of a motorcycle. The seat rail includes an upper lateral member located on a lateral side in a width direction of the vehicle body and made of a fiber reinforced resin, the upper lateral member including a lower flange that protrudes in the width direction of the vehicle body from a lower edge of the upper lateral member. Furthermore, the seat rail includes a lower lateral member located downward from the upper lateral member and made of metal, and a lower surface of the lower flange of the upper lateral member is joined to an upper surface of the lower lateral member by adhesive.

A rider-posture changing device is for a human-powered vehicle. The rider-posture changing device includes a first member, a second member, a positioning structure and an electric actuator. The second member is configured to be movable relative to the first member. The positioning structure is configured to adjustably position the first member relative to the second member. The electric actuator is configured to actuate the positioning structure. The electric actuator includes a first electrical connector and a second electrical connector. The first electrical connector is configured to be detachably and reattachably connected to a first power supply. The second electrical connector is configured to be detachably and reattachably connected to a second power supply.

A rider-posture changing device is for a human-powered vehicle. The rider-posture changing device includes a first member, a second member, a positioning structure and an electric actuator. The second member is configured to be movable relative to the first member. The positioning structure is configured to adjustably position the first member relative to the second member. The electric actuator is configured to actuate the positioning structure. The electric actuator includes a first electrical connector and a second electrical connector. The first electrical connector is configured to be detachably and reattachably connected to a first power supply. The second electrical connector is configured to be detachably and reattachably connected to a second power supply.

A seat post assembly includes a seat post that is electrically adjustable in height. The adjustability may be based on one or more pressures sensed by one or more sensors within the seat post assembly, respectively. The disclosed seat post assembly includes an electronics module. The electronics module may be carried under the seat or saddle and may include a pressure sensor or pressure sensor circuitry.

A seat post assembly includes a seat post that is electrically adjustable in height. The adjustability may be based on one or more pressures sensed by one or more sensors within the seat post assembly, respectively. The disclosed seat post assembly includes an electronics module. The electronics module may be carried under the seat or saddle and may include a pressure sensor or pressure sensor circuitry.