A bicycle rear derailleur comprises a base member, a linkage structure, a movable member, a first pulley assembly, and a second pulley assembly. The first pulley assembly includes a first pulley support and a first toothed pulley. The first pulley support is pivotally coupled to the movable member about a first pivot axis. The first toothed pulley is rotatably coupled to the first pulley support about a first pulley axis spaced apart from the first pivot axis. The second pulley assembly includes a second pulley support, a second toothed pulley, and a third toothed pulley. The second pulley support is pivotally coupled to the movable member about a second pivot axis. The second toothed pulley is rotatably coupled to the second pulley support about a second pulley axis. The third toothed pulley is rotatably coupled to the second pulley support about a third pulley axis.

A derailleur comprises a base member configured to be attached to a human-powered vehicle frame, a movable member movable relative to the base member, a pulley assembly configured to be pivotally attached to the movable member with respect to a pivot axis, and a biasing member configured to apply biasing force to the pulley assembly. The biasing member includes a first biasing member and a second biasing member.

A derailleur comprises a base member configured to be attached to a human-powered vehicle frame, a movable member movable relative to the base member, a pulley assembly configured to be pivotally attached to the movable member with respect to a pivot axis, and a biasing member configured to apply biasing force to the pulley assembly. The biasing member includes a first biasing member and a second biasing member.

A stabilizer includes a receiving device, a guide plate element for connection with a chain, and a clutch device. The guide plate element is movably mounted on the receiving device and performing a rotation state through an elastic element. The clutch device is mounted on the receiving device and connected with the guide plate element and used for providing one-way resistance. When a vehicle body jounces, the guide plate element rotates upwardly under force, the chain is tensioned, and the clutch device is in a free rotation state. When the guide plate element moves towards an opposite direction under force, the clutch device provides one-way resistance, so that the guide plate element can maintain a tensioning state of the chain for a longer time, and the effect of stabilizing the chain is achieved.

A bicycle derailleur comprises a base member, a movable member, a pulley assembly, a rotational-force adjustment structure, an electric actuator, and a controller. The rotational-force adjustment structure is at least partly disposed between the movable member and the pulley assembly so as to apply resistance to rotation of the pulley assembly relative to the movable member. The electric actuator is configured to operate the rotational-force adjustment structure. The controller is configured to control the electric actuator based on a driving-force related information.

A bicycle derailleur comprises a base member, a movable member, a pulley assembly, a rotational-force adjustment structure, an electric actuator, and a controller. The rotational-force adjustment structure is at least partly disposed between the movable member and the pulley assembly so as to apply resistance to rotation of the pulley assembly relative to the movable member. The electric actuator is configured to operate the rotational-force adjustment structure. The controller is configured to control the electric actuator based on a driving-force related information.

An individual chain wheel for a bicycle front crank arrangement for engaging in a drive chain includes a plurality of teeth formed on a circumference of the chain wheel and having a first and a second group of teeth. The teeth of the second group of teeth are arranged in an alternating manner between the teeth of the first group of teeth. Each tooth has a load flank via which force is transmitted between an adjacent roller of the drive chain and the respective tooth. Each tooth of the first group may also have at least one profile with an opening in the vicinity of the flank, in which a portion of an inner link plate of the drive chain, which portion protrudes beyond the roller, engages.

A rear derailleur is provided, including: a base, configured to be mounted to a bicycle; a linkage assembly, connected to the base; a movable member, rotatably connected to the linkage assembly; a chain guide, rotatably connected to the movable member by an axle assembly; a biasing member, located between the movable member and the chain guide, positioned to the movable member and the chain guide; a resistance mechanism, connected to the movable member; and a cap member, covering the resistance mechanism and driving the resistance mechanism, rotatably positionable in either of a first position and a second position, wherein when the cap member is positioned in the first position, the resistance mechanism provides a first resistance, and when the cap member is positioned in the second position, the resistance mechanism provides a second resistance which is different from the first resistance.

A rear derailleur is provided, including: a base, configured to be mounted to a bicycle; a linkage assembly, connected to the base; a movable member, rotatably connected to the linkage assembly; a chain guide, rotatably connected to the movable member by an axle assembly; a biasing member, located between the movable member and the chain guide, positioned to the movable member and the chain guide; a resistance mechanism, connected to the movable member; and a cap member, covering the resistance mechanism and driving the resistance mechanism, rotatably positionable in either of a first position and a second position, wherein when the cap member is positioned in the first position, the resistance mechanism provides a first resistance, and when the cap member is positioned in the second position, the resistance mechanism provides a second resistance which is different from the first resistance.

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.