A bicycle rear derailleur includes a base member, a chain guide, a movable member and a first link member. The base member is configured to be mounted to a bicycle frame at a frame mounting axis. The chain guide includes a first pulley rotatably arranged around a first pulley axis in a first pulley plane. The movable member pivotally supports the chain guide about a pivot axis. The first link member moves the chain guide between first and second lateral positions. The first lateral position is closer to a bicycle center plane. The first pulley plane intersects the first link member in a state where the chain guide is located at the second lateral position. The frame mounting axis is spaced from the pivot axis by a distance equal to or larger than eighty-nine millimeters when the chain guide is at the first lateral position.

A bicycle rear derailleur includes a base member, a chain guide, a movable member and a first link member. The base member is configured to be mounted to a bicycle frame at a frame mounting axis. The chain guide includes a first pulley rotatably arranged around a first pulley axis in a first pulley plane. The movable member pivotally supports the chain guide about a pivot axis. The first link member moves the chain guide between first and second lateral positions. The first lateral position is closer to a bicycle center plane. The first pulley plane intersects the first link member in a state where the chain guide is located at the second lateral position. The frame mounting axis is spaced from the pivot axis by a distance equal to or larger than eighty-nine millimeters when the chain guide is at the first lateral position.

A bicycle gearshift including a first body associated with a bicycle frame, a second body connected to, and moveable relative to, the first body, a rocker arm rotatably connected to the second body at a rotation axis, and a shaft extending coaxially to this axis and fixedly associated with the rocker arm. A unidirectional rotation device is arranged between the shaft and second body to allow rotation of the shaft relative to the second body only in a first rotation direction. An elastic element is associated with the second body and the rocker arm to push the rocker arm in rotation about the axis in the first rotation direction. A damping device is arranged between the shaft and unidirectional rotation device to generate a friction force when the rocker arm is rotated in a second, opposite rotation direction, and has a friction surface in contact with the unidirectional rotation device.

A bicycle gearshift including a first body associated with a bicycle frame, a second body connected to, and moveable relative to, the first body, a rocker arm rotatably connected to the second body at a rotation axis, and a shaft extending coaxially to this axis and fixedly associated with the rocker arm. A unidirectional rotation device is arranged between the shaft and second body to allow rotation of the shaft relative to the second body only in a first rotation direction. An elastic element is associated with the second body and the rocker arm to push the rocker arm in rotation about the axis in the first rotation direction. A damping device is arranged between the shaft and unidirectional rotation device to generate a friction force when the rocker arm is rotated in a second, opposite rotation direction, and has a friction surface in contact with the unidirectional rotation device.

A rear derailleur assembly for mounting to a bicycle, wherein the bicycle includes a frame, includes an upper body for operationally engaging the rear derailleur assembly to the frame. The rear derailleur assembly also include a chain cage for engaging a chain of the bicycle; a controller pivotally connected to the upper body; and a lower body operationally connected to the chain cage, pivotally connected to the controller, and pivotally connected to the chain cage. The lower body includes a damper assembly for providing rotational resistance as the chain cage rotates in a first direction about the pivot axis.

A rear derailleur assembly for mounting to a bicycle, wherein the bicycle includes a frame, includes an upper body for operationally engaging the rear derailleur assembly to the frame. The rear derailleur assembly also include a chain cage for engaging a chain of the bicycle; a controller pivotally connected to the upper body; and a lower body operationally connected to the chain cage, pivotally connected to the controller, and pivotally connected to the chain cage. The lower body includes a damper assembly for providing rotational resistance as the chain cage rotates in a first direction about the pivot axis.

A bicycle derailleur comprises a base member, a movable member, a chain guide, and a resistance applying structure. The chain guide is rotatably coupled to the movable member about a pivot axis. The resistance applying structure includes a rotational one-way clutch and an elastic portion. The rotational one-way clutch includes a first engagement member and a second engagement member. The first engagement member has a first axially facing surface and a first engagement profile provided to the first axially facing surface. The second engagement member has a second axially facing surface and a second engagement profile provided to the second axially facing surface. The elastic portion is provided to at least one of the first axially facing surface of the first engagement member and the second axially facing surface of the second engagement member.

A bicycle derailleur comprises a base member, a movable member, a chain guide, and a resistance applying structure. The chain guide is rotatably coupled to the movable member about a pivot axis. The resistance applying structure includes a rotational one-way clutch and an elastic portion. The rotational one-way clutch includes a first engagement member and a second engagement member. The first engagement member has a first axially facing surface and a first engagement profile provided to the first axially facing surface. The second engagement member has a second axially facing surface and a second engagement profile provided to the second axially facing surface. The elastic portion is provided to at least one of the first axially facing surface of the first engagement member and the second axially facing surface of the second engagement member.

The disclosure relates to an electromechanical rear derailleur for coaxial assembling on a rear wheel axle. The derailleur has a base element, a pivot mechanism, and a movable element having a chain guide assembly. The chain guide assembly is connected to the movable element so as to be rotatable about a rotation axis. A blocking device permits the chain guide assembly to be established relative to the movable element. The blocking device is able to be inserted into the movable element in two different positions.

The disclosure relates to an electromechanical rear derailleur for coaxial assembling on a rear wheel axle. The derailleur has a base element, a pivot mechanism, and a movable element having a chain guide assembly. The chain guide assembly is connected to the movable element so as to be rotatable about a rotation axis. A blocking device permits the chain guide assembly to be established relative to the movable element. The blocking device is able to be inserted into the movable element in two different positions.