The disclosure describes an electromechanical rear derailleur for coaxial mounting on a rear wheel axis. The rear derailleur has a base member, a pivot mechanism, a movable member having a chain guiding arrangement, and an electromechanical drive for driving the pivot mechanism. The pivot mechanism connects the base member to the movable member. The chain guiding arrangement is connected to the movable member for rotation about an axis of rotation. The base member comprises a first connection end, which can be mounted coaxially with the rear wheel axis, and a second connection end for coupling with the pivot mechanism.

The disclosure describes an electromechanical rear derailleur for coaxial mounting on a rear wheel axis. The rear derailleur has a base member, a pivot mechanism, a movable member having a chain guiding arrangement, and an electromechanical drive for driving the pivot mechanism. The pivot mechanism connects the base member to the movable member. The chain guiding arrangement is connected to the movable member for rotation about an axis of rotation. The base member comprises a first connection end, which can be mounted coaxially with the rear wheel axis, and a second connection end for coupling with the pivot mechanism.

A bicycle derailleur includes a base member mountable to a bicycle frame and a cage assembly moveably coupled to the base member. One or both of a motor and/or electrical generator system may be coupled to and moveable with the cage assembly. The motor is operable to move the cage assembly. The electrical generator system includes a generator and a generator drive system.

A bicycle derailleur includes a base member mountable to a bicycle frame and having first and second laterally spaced mounting portions defining first and second planes, and a space therebetween dimensioned to receive a portion of the bicycle frame. A first mounting arrangement defines a first pivot axis oriented at an acute angle relative to the first and second planes. A second mounting arrangement defines a second pivot axis parallel to the first pivot axis. A first link is pivotally connected to the first mounting arrangement and a second link is pivotally connected to the second mounting arrangement. A moveable member is pivotally connected to the first and second links. A battery may be mounted on the base member and electrically connected with a motor carried by the moveable 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.

A rear derailleur includes a base member mountable to a bicycle frame, a movable member movably coupled to the base member, and a pivot member rotatably coupled to the movable member. The rear derailleur also includes a chain guide assembly rotatably connected to the movable member via the pivot member. The rear derailleur includes a damper device disposed within the movable member. The damper device is operable to apply a damping force to the chain guide assembly when the chain guide assembly rotates. The damper device includes a friction member having a friction surface. A first portion of the friction surface is in frictional engagement with the pivot member, and a second portion of the friction surface is in frictional engagement with the movable member. The friction device is disposed within the movable member at a distance relative to the biasing device in an axial direction along the pivot member.