A bicycle derailleur comprises a base member, a chain guide, a motor unit, and a linkage structure. The base member has at least one first link-pin-receiving opening. The motor unit has at least one second link-pin-receiving opening. The linkage structure comprises at least one link member and at least one link pin. The at least one link member is configured to movably couple the chain guide to the base member. The at least one link member has at least one third link-pin-receiving opening. The at least one link pin is configured to pivotally couple the at least one link member to the base member about at least one link pivot axis. One of the at least one link pin is configured to extend through the at least one first link-pin-receiving opening, the at least one second link-pin-receiving opening, and the at least one third link-pin-receiving opening.

A front sprocket assembly comprises a first sprocket and a second sprocket. The second sprocket includes a second sprocket body and a plurality of second sprocket teeth. At least one tooth of the plurality of second sprocket teeth includes a less chain-interference recess provided to the second axially inwardly facing surface. The less chain-interference recess is configured to reduce interference between the at least one tooth of the plurality of second sprocket teeth and a chain in an upshifting operation in which the chain is shifted from the first sprocket toward the second sprocket. The less chain-interference recess has a radially innermost end positioned radially inwardly from a tooth bottom circle of the plurality of second sprocket teeth. A radial distance radially defined from the tooth bottom circle to the radially innermost end with respect to a rotational center axis is equal to or larger than 1.0 mm.

A front sprocket assembly comprises a first sprocket and a second sprocket. The second sprocket includes a second sprocket body and a plurality of second sprocket teeth. At least one tooth of the plurality of second sprocket teeth includes a less chain-interference recess provided to the second axially inwardly facing surface. The less chain-interference recess is configured to reduce interference between the at least one tooth of the plurality of second sprocket teeth and a chain in an upshifting operation in which the chain is shifted from the first sprocket toward the second sprocket. The less chain-interference recess has a radially innermost end positioned radially inwardly from a tooth bottom circle of the plurality of second sprocket teeth. A radial distance radially defined from the tooth bottom circle to the radially innermost end with respect to a rotational center axis is equal to or larger than 1.0 mm.

An electrical actuator for a bicycle front derailleur making use of a standard wireless remote control (RC) servo unit relying exclusively on highly efficient spur gearing reduction and facilitating highly accurate derailleur positioning thereof through an integral digital magnetic rotary encoder with assembly thereof sealed in a two-piece housing and serving to transmit actuation effort thereof directly to actuation shaft of a front derailleur.

An electrical actuator for a bicycle front derailleur making use of a standard wireless remote control (RC) servo unit relying exclusively on highly efficient spur gearing reduction and facilitating highly accurate derailleur positioning thereof through an integral digital magnetic rotary encoder with assembly thereof sealed in a two-piece housing and serving to transmit actuation effort thereof directly to actuation shaft of a front derailleur.

A bicycle front shifting system includes operable to transmit a wireless signal, a crank assembly with two crank arms and a pedal on each of the two crank arms. The crank assembly is rotatable about a rotation axis. A front shift unit is coupled to the crank assembly and is rotatable about the rotation axis. The front shift unit includes a chain ring component with a big chain ring and a small chain ring. The small chain ring has a small diameter and the big chain ring has a big diameter that is larger than the small diameter. A shift mechanism is coupled to and rotatable with the chain ring component about the rotation axis. The shift mechanism is configured to receive the wireless signal from the shifter and to shift a chain between the big chain ring and the small chain ring according to the wireless signal.

A bicycle front shifting system includes operable to transmit a wireless signal, a crank assembly with two crank arms and a pedal on each of the two crank arms. The crank assembly is rotatable about a rotation axis. A front shift unit is coupled to the crank assembly and is rotatable about the rotation axis. The front shift unit includes a chain ring component with a big chain ring and a small chain ring. The small chain ring has a small diameter and the big chain ring has a big diameter that is larger than the small diameter. A shift mechanism is coupled to and rotatable with the chain ring component about the rotation axis. The shift mechanism is configured to receive the wireless signal from the shifter and to shift a chain between the big chain ring and the small chain ring according to the wireless signal.

A bicycle transmission apparatus comprises a base member, a first transmission member, a second transmission member, a first coupling member, a first guide structure, a switching device, and a transmission controller. The switching device is configured to switch a position of the first transmission member relative to the base member in an axial direction between a first axial position and a second axial position. The transmission controller is configured to control the switching device and the first guide structure so as not to change a first engagement state of the first coupling member from one cogwheel to another adjacent cogwheel among first cogwheels when the first transmission member moves relative to the base member in association with a movement of the first guide structure relative to the base member to change a second engagement state of the first coupling member from one cogwheel to another adjacent cogwheel among second cogwheels.

A bicycle front derailleur is basically provided with a base member and a movable member. The base member includes a bicycle mounting portion. The movable member is movably supported to the base member between a retracted position and an extended position relative to the base member. The movable member includes a first guide plate having a first inner surface and a second guide plate having a second inner surface. The first and second inner surfaces face each other to form a chain receiving slot therebetween. The second guide plate includes an adjustable guide member that is arranged at the chain receiving slot to move between at least two different positions relative to the second guide plate.

A bicycle front derailleur is basically provided with a base member and a movable member. The base member includes a bicycle mounting portion. The movable member is movably supported to the base member between a retracted position and an extended position relative to the base member. The movable member includes a first guide plate having a first inner surface and a second guide plate having a second inner surface. The first and second inner surfaces face each other to form a chain receiving slot therebetween. The second guide plate includes an adjustable guide member that is arranged at the chain receiving slot to move between at least two different positions relative to the second guide plate.