An automatic bicycle shifter making use of a global positioning system (GPS) altimeter for sensing road inclination, an accelerometer for sensing bicycle acceleration and a hot wire anemometer for sensing wind load, and through application of classical law of conservation of energy attenuates or appreciate automatic shifting speeds in real time to maintain a rider standard shifting torque. Automatic bicycle shifter is additionally provided with capability to sense, record, and interpret rider automatic shift override commands and further adjust automatic shift criteria to rider preference.

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 derailleur for a human-powered vehicle comprises a base member, a movable member, a linkage, an electrical actuator, a first biasing member, and a second biasing member. The base member is configured to be attached to a vehicle body of the human-powered vehicle. The movable member is configured to be movable relative to the base member in a first direction and a second direction different from the first direction. The linkage is configured to movably connect the movable member to the base member. The electrical actuator is configured to operatively move the movable member relative to the base member. The first biasing member is configured to deform if first external force is applied to move the movable member in the first direction. The second biasing member is configured to deform if second external force is applied to move the movable member in the second direction.

A derailleur for a human-powered vehicle comprises a base member, a movable member, a linkage, an electrical actuator, a first biasing member, and a second biasing member. The base member is configured to be attached to a vehicle body of the human-powered vehicle. The movable member is configured to be movable relative to the base member in a first direction and a second direction different from the first direction. The linkage is configured to movably connect the movable member to the base member. The electrical actuator is configured to operatively move the movable member relative to the base member. The first biasing member is configured to deform if first external force is applied to move the movable member in the first direction. The second biasing member is configured to deform if second external force is applied to move the movable member in the second direction.

An apparatus for a bicycle includes an intermediate power connector configured for transmitting power between a bicycle component and a power source positioned remote from the bicycle component. The intermediate power connector has a coupling portion configured for removable attachment to a connecting portion of the bicycle component. The bicycle component can also include a battery having a battery coupling portion configured for removable attachment to the connecting portion of the bicycle component. The battery and the intermediate power connector can be selectively attachable to the bicycle component to provide power thereto.

An apparatus for a bicycle includes an intermediate power connector configured for transmitting power between a bicycle component and a power source positioned remote from the bicycle component. The intermediate power connector has a coupling portion configured for removable attachment to a connecting portion of the bicycle component. The bicycle component can also include a battery having a battery coupling portion configured for removable attachment to the connecting portion of the bicycle component. The battery and the intermediate power connector can be selectively attachable to the bicycle component to provide power thereto.

A bicycle seatpost system comprises an electric actuator, a remote controller, and a seatpost controller. The seatpost controller is configured to control the electric actuator to change a state of the bicycle seatpost assembly to an adjustable state based on one of a first control signal and a second control signal. The remote controller includes a first operating part configured to receive a first user input and a second operating part configured to receive a second user input. The remote controller is configured to generate the first control signal having a constant signal length regardless of an operation period of the first user input. The remote controller is configured to generate the second control signal having a signal length corresponding to the operation period of the second user input.

A bicycle seatpost system comprises an electric actuator, a remote controller, and a seatpost controller. The seatpost controller is configured to control the electric actuator to change a state of the bicycle seatpost assembly to an adjustable state based on one of a first control signal and a second control signal. The remote controller includes a first operating part configured to receive a first user input and a second operating part configured to receive a second user input. The remote controller is configured to generate the first control signal having a constant signal length regardless of an operation period of the first user input. The remote controller is configured to generate the second control signal having a signal length corresponding to the operation period of the second user input.

A rear derailleur is configured as a hierarchical, at least two-level modular construction system and comprises at least several of the modules: “base element module”, “swivel formation module”, “shifting element module”, and “chain guiding device module”. At least one of the modules is replaceable and handleable in one piece. At least one of the modules includes at least one sub-assembly that is replaceable and handleable in one piece. In an embodiment the modular construction system is configured to use at least one family of sub-assemblies comprising at least two family members within at least one of the modules.

Detachable connection interfaces of the family members to adjacent sub-assemblies of the module within the sub-assembly family are configured uniformly across family members for the respective sub-assembly family in such a way that a family member of the sub-assembly family of the module is exchangeable for another family member of the same sub-assembly family that, is for example, of different material, of different design, of different functionality or has different surface properties, while retaining the remaining sub-assemblies of the module.

A rear derailleur is configured as a hierarchical, at least two-level modular construction system and comprises at least several of the modules: “base element module”, “swivel formation module”, “shifting element module”, and “chain guiding device module”. At least one of the modules is replaceable and handleable in one piece. At least one of the modules includes at least one sub-assembly that is replaceable and handleable in one piece. In an embodiment the modular construction system is configured to use at least one family of sub-assemblies comprising at least two family members within at least one of the modules.

Detachable connection interfaces of the family members to adjacent sub-assemblies of the module within the sub-assembly family are configured uniformly across family members for the respective sub-assembly family in such a way that a family member of the sub-assembly family of the module is exchangeable for another family member of the same sub-assembly family that, is for example, of different material, of different design, of different functionality or has different surface properties, while retaining the remaining sub-assemblies of the module.