Abstract: A drive arrangement for a bicycle has a multi-sprocket arrangement for a rear wheel hub of the bicycle. The multi-sprocket arrangement comprises a plurality of sprockets with different diameters, wherein the sprockets each have a plurality of teeth which are separated by tooth spaces, and which can be placed in engagement with a drive chain with wide and narrow chain links which follow one another alternatively in succession. On a circumference of at least a starting sprocket of the plurality of sprockets, at least one sequence of teeth is provided at a location where a changeover of the drive chain from the starting sprocket to a selected sprocket occurs. The sequence of teeth comprises a first tooth having a tooth base that is tangent to a root circle of the starting sprocket or lies radially outside of the root circle, and at least one additional tooth which follows the first tooth lies with its tooth base radially within the root circle of the starting sprocket.

Abstract: The disclosure relates to a chain roller for a rear bicycle gearshift mechanism. The chain roller comprising a rotatory bearing, a toothed ring with teeth formed thereon, and a support structure which connects the rotary bearing and the toothed ring. The toothed ring and support structure are formed from different materials and are connected to one another radially and axially.

Abstract: A bicycle chainring for engagement with a drive chain includes a plurality of teeth extending from a periphery of the chainring wherein roots of the plurality of teeth are disposed adjacent the periphery of the chainring. The plurality of teeth include a first group of teeth and a second group of teeth.

Abstract: A drive arrangement for a bicycle has a multi-sprocket arrangement for a rear wheel hub of the bicycle. The multi-sprocket arrangement comprises a plurality of sprockets with different diameters, wherein the sprockets each have a plurality of teeth which are separated by tooth spaces and which can be placed in engagement with a drive chain with wide and narrow chain links which follow one another alternatively in succession. On at least one sprocket, a corrective feature is provided which is designed such that the drive chain, as it revolves around a selected sprocket or during a sprocket changeover from a starting sprocket to a selected sprocket, is oriented, with regard to its wide and narrow chain links, in a predetermined chain link plate orientation relative to the teeth of the selected sprocket.

Abstract: A connection of a bicycle derailleur to a bicycle frame is presented. A mounting element with a retaining bolt is used. The mounting element may be configured with an insertion sheath. At least one element of the insertion sheath and the retaining bolt may be configured with at least one engagement formation adapted for this purpose, together with at least one counter-engaging element, which is separate from the insertion sheath and the retaining bolt, or a counter-engaging formation of the respective other element from the insertion sheath and the retaining bolt, to produce an elastic snap-in retaining connection or a bayonet-type retaining lock, which realizes a positive retaining engagement between the insertion sheath and the retaining bolt.

Abstract: A roller-type chain for a bicycle is configured with asymmetrical chain link plates, the chain link plates applicable for use with a chain with reduced chain width as in use on chain drives with a high number of gear ratios. The chain link plates are configured at the inner side of the chain loop for engagement on the teeth of the rear sprocket and of the front chain wheel. The chain link plates are further configured at the outer side of the chain loop for interaction with the chain-guiding roller on the rear gearshift mechanism.

Abstract: A drive arrangement for a bicycle includes a crank having a crank mounting portion, a front sprocket having a front sprocket mounting portion attached to the crank mounting portion and a front chain engaging portion, an axle assembly, a plurality of rear sprockets located about an axis of the axle assembly, a chain configured to engage with the front chain engaging portion of the front sprocket and the plurality of rear sprockets, a gear changer having a gear changer mounting unit located about the axis of the axle assembly and having a first mounting portion spaced apart from a second portion mounting portion. The gear changer is configured to move the chain between an axially innermost rear sprocket and an axially outermost rear sprocket and a control unit is configured to control movement of the gear changer.

Abstract: A chain and an inner link plate for a bicycle chain having chain rollers is provided. A protrusion of the inner link plate in relation to the respectively assigned chain roller in a front lower longitudinal end region of an inner link plate outer periphery is reduced, in comparison to the protrusion in a front upper longitudinal end region and/or in a rear lower longitudinal end region of the inner link plate outer periphery.

Abstract: A multiple sprocket arrangement is mountable to a rear axle arrangement of a bicycle. The multiple sprocket arrangement includes a sprocket assembly having a plurality of sprockets with different numbers of teeth. The sprocket assembly includes a support ring integrated with at least a largest sprocket of the plurality of sprockets. The support ring is firmly connected to the remaining sprockets and has a torque transmitting section.

Abstract: A multiple-sprocket arrangement for mounting on a rear wheel axle arrangement of a bicycle is provided. The multiple-sprocket arrangement includes a sprocket assembly having a plurality of sprockets of different sizes, and/or different numbers of teeth, disposed along an axis of rotation, for example of the rear wheel axle arrangement. The sprocket assembly includes a torque transmitting section configured to transmit torque to a hub sleeve, the torque transmitting section disposed along a first length of the rotation axis, and at least two sprockets having a smaller inner diameter than an outer diameter of the hub sleeve, the at least two sprockets formed as a separate piece, or pieces, from other sprockets of the plurality of sprockets and positioned over a second length along the rotation axis, the second length distinct from, and disposed outboard of, the first length.

Abstract: A bicycle gearshift mechanism has a base element, a pivot mechanism, a movable element, and a chain guide arrangement. The pivot mechanism connects the base element to the movable element. The chain guide arrangement is connected, rotatably about a rotary axle, to the movable element.

Abstract: A rear wheel sprocket arrangement for a bicycle comprises a plurality of coaxially arranged sprockets having different numbers of teeth, wherein an entire gear range of the sprocket arrangement is at least three-hundred fifty percent (350%), and wherein an average percentage gear stage step lies within a range of fifteen percent (15%) to thirty percent (30%).

Abstract: The disclosure relates to a derailleur for a bicycle, comprising a B-knuckle assembly which is designed for mounting on the bicycle frame, a P-knuckle assembly, a parallelogram assembly via which the B-knuckle assembly and the P-knuckle assembly are movably connected to one another, a cage assembly in which a chain guide pulley and a chain tension pulley are rotatably held, where the cage assembly is mounted on the P-knuckle assembly so as to be rotatable about a P axis, and an rotation angle detection device which is designed to detect and/or display an angle of rotation between the P-knuckle assembly and the cage assembly.

Abstract: A multi-sprocket arrangement for a rear wheel hub of a bicycle may have improved gearshift characteristics, reduced vibrations during skewed running, and improved wear characteristics. The multi-sprocket arrangement includes a multiplicity of sprockets of different diameters, wherein at least one of the sprockets has a multiplicity of teeth. Also on the circumference of said sprocket, as viewed in a circumferential direction, at least one sequence of teeth is provided in which, with regard to their material thickness, a thin tooth is followed by a thick tooth which is followed in turn by another thin tooth.

Abstract: A bicycle derailleur includes a base element, a movable element having a receptacle and movably coupled to the base element, a rotary shaft mounted in the movable element in the receptacle to be rotatable about an axis of rotation, and a chain guide assembly rotatable relative to the movable element about the axis of rotation and which is coupled rotationally conjointly to the rotary shaft. An elastic force store device exerts on the chain guide assembly a preload force which preloads said chain guide assembly in a direction of rotation relative to the movable element. A damping device acts directly or indirectly between the movable element and the chain guide assembly and has a coupling device arranged radially within the first elastic force store device by which the damping device is coupled to a support, which is static in relation to the movable element, and the rotary shaft.

Abstract: A drive arrangement for a bicycle may include a plurality of sprockets arranged at a rear wheel of the bicycle. The sprockets may be particularly arranged to have a spacing that facilitates the configuration of an increasing number of sprockets in the plurality of sprockets. A singular front sprocket or chainring may be used to drive the rear plurality of sprockets. A particularly configured tool may be used to configure the drive arrangement.

Abstract: A bicycle gearshift mechanism has a base element, a pivot mechanism, a movable element, and a chain guide arrangement. The pivot mechanism connects the base element to the movable element. The chain guide arrangement is connected, rotatably about a rotary axle, to the movable element. The base element comprises a first attachment end, which is coaxial with respect to the rear-wheel axle or axis, and a second attachment end for coupling to the pivot mechanism.

Abstract: A multi-sprocket arrangement for a rear wheel hub of a bicycle may have improved gearshift characteristics, reduced vibrations during skewed running, and improved wear characteristics. The multi-sprocket arrangement includes a multiplicity of sprockets of different diameters, wherein at least one of the sprockets has a multiplicity of teeth. Also on the circumference of said sprocket, as viewed in a circumferential direction, at least one sequence of teeth is provided in which, with regard to their material thickness, a thin tooth is followed by a thick tooth which is followed in turn by another thin tooth.

Abstract: A rear gearshift mechanism for installation on a bicycle frame coaxial with a rear-wheel axis has a base element, a pivot mechanism, a movable element and a chain guide. The base element includes an attachment end for installation on the bicycle frame. A first arm and a second arm of the attachment end are arranged spaced apart from one another in an axial direction and, by an associated adapter which has a thread, are configured for the installation of the gearshift mechanism on an associated bracket portion, in particular a dropout or frame hanger. The first arm is arranged on an inner side of the bracket portion, and the second arm is arranged on an outer side of the bracket portion. The base element is designed with a setting device by which the base element can be pivoted in a chain tensioning direction.

Abstract: A gear change mechanism for a bicycle may involve a tensioner that has a wheel engaged with a chain in a bicycle drivetrain. This tensioner may be configured to rotate or otherwise change orientation in response to slack in the chain to maintain tension in the chain. A sensor may be used to measure the orientation of a tensioner of a chain in a bicycle drivetrain, and/or the physical orientation of components indicative thereof. Actions may be triggered by signals generated by the sensor.