Abstract: A process for manufacturing a bicycle wheel component, comprising the steps of providing a component having at least one braking area that cooperates with a braking body made by molding of composite material having structural fibers in a polymeric material, and post-molding machining of at least one region of the braking area by removing only polymeric material, without removal of the structural fiber, from the entire region so that the structural fiber outcrops at least in part from the polymeric material, and removing the structural fiber and possibly the polymeric material according to at least one groove within the region. A bicycle wheel component having a braking area of composite material, wherein in a region of the braking area, the structural fiber outcrops at least from the polymeric material, and the region comprises a groove through the structural fiber and possibly the polymeric material of the composite material.

Abstract: A bicycle rear wheel sub-assembly having a sprocket-carrying body, a cogset including a plurality of axially adjacent sprockets with at least three of the plurality of sprockets formed into a monolithic set and a ring nut securing the cogset to the sprocket-carrying body. The ring nut is formed as two parts assembled together—an axially outer first part on which a tubular body and a flange are formed, and an axially inner second part on which a threaded portion is formed. This structure provides a simple and effective coupling of the ring nut with the monolithic sub-set of the cogset and the sprocket-carrying body.

Abstract: A sub-assembly is presented, for a bicycle rear wheel, formed by a sprocket-carrying body and a cogset mounted coaxially on the sprocket-carrying body through shape engagement, is sized such that a good compromise is obtained between the ability to house a relatively large number of sprockets and the structural solidity of the sub-assembly.

Abstract: A bicycle component comprising a stress/strain sensor aligned according to a stress/strain to be detected, and a temperature sensor associated with said stress/strain sensor, wherein said stress/strain sensor and said temperature sensor lie in planes that do not coincide with one another and are not parallel to each another.

Abstract: A hydraulic tank for a bicycle that has a compensation chamber within the tank. The tank also has a ventilation hole and a ventilation channel, which is in fluid communication with the ventilation hole, and has an inlet opening arranged on a side wall of the tank.

Abstract: A bicycle electronic controller has a body with a push-operated switch, a manual actuation member for issuing a command, and a motion transmission device interposed between the manual actuation member and the switch. The motion transmission device includes a guide element which is provided with a filiform through cavity and has a first end fixed in proximity to the manual actuation member and a second end fixed in proximity to the switch. A longitudinally, substantially incompressible filiform body is slidingly guided within the guide element and has a first end pushed by actuation of the manual actuation member and a second end that pushes on the switch. The switch is housed within the electronic controller body where a tight insulation can be achieved in addition to arranging the actuation member where it is more ergonomic.

Abstract: An integrated control device is provided, having a support body configured for attachment to curved bicycle handlebars. The support body has a brake lever for controlling the brake, and a pair of control levers. The pair of control levers are configured for manual operation. Each control lever has a respective control region and the control regions of the pair of control levers are arranged behind the brake lever and above each other.

Abstract: A bicycle electronic controller has a support body that attaches to the bicycle's handlebar. A plurality of electric-electronic devices are housed within the support body on printed circuit boards (PCBs). Two of the PCBs are parallel to each other, and spaced from each other, and electrically connected to each other.

Abstract: A diagnostic method for a bicycle hydraulic disc braking system, having a master cylinder assembly with a cylinder inside which a piston reciprocates against the action of a return spring. The master cylinder has a hydraulic tank with a bottom, a ceiling, and a membrane that divides the hydraulic tank into two chambers. The hydraulic tank is connected to the cylinder through the bottom. A metering device measures the distance between the membrane and the ceiling of the tank. The output signal of the metering device is evaluated to determine that operation is correct when the membrane temporarily approaches the ceiling by a predetermined extent range, or incorrect otherwise. A positive evaluation reflects the correct operating condition, and a negative evaluation reflects an incorrect operating condition.

Abstract: A bicycle electronic control device having a support body configured for attachment to the bicycle handlebars. The control device includes a switch and a manual actuator for switching the switch and issuing a command. A de-coupling mechanism is interposed between the manual actuator and the switch for initially de-coupling the manual actuator from the switch.

Abstract: A bicycle wireless control device has a support body that attaches to a bicycle. The support body houses a plurality of electric-electronic devices including a wireless communication module on a printed circuit board (PCB). A coaxial cable extends from the PCB to an outer surface of the support body and functions as an antenna.

Abstract: A hydraulic disc braking system is disclosed. The system has a manually operated control device for a cyclist to issue a braking command. The system has a master cylinder assembly having a membrane dividing the hydraulic fluid tank into a variable volume filled chamber and a complementarily variable volume empty chamber. A membrane detector senses the presence of the membrane relative to a predetermined position in the tank and/or a meter measures the distance of the membrane from the ceiling of tank.

Abstract: A hydraulic tank has an elastically deformable membrane defining a variable compensation chamber within the tank. The membrane has a fixed perimeter portion and a thrusting portion. A perimeter inlet portion is arranged between the perimeter fixing portion and the thrusting portion. In the condition of minimum expansion of the compensation chamber, the thrusting portion is completely arranged between the perimeter inlet portion of the membrane and a wall of the tank.

Abstract: A spoke tension adjustment tool has a longitudinally elongated body with a central longitudinal cavity configured to house an end portion of a spoke. The housing has a longitudinal slit that allows the end portion of the spoke to enter the longitudinal cavity. The longitudinally elongated body has a grip portion and a shaped end portion configured to couple with a stem of a spoke attachment element. The shaped end portion is smaller than the grip portion and smaller than the diameter of a rim spoke attachment hole in which the stem is inserted.

Abstract: A bicycle rear wheel adapter has an annular body that abuts a sprocket-carrying body that extends in an axially outer direction and receives sprockets in radially peripheral positions. A coupling element on the annular body couples with the sprocket-carrying body so the adapter rotates as a unit with the sprocket-carrying body, and a sprocket-receiving seat on the annular body couples with a sprocket so the adapter rotates as a unit with the sprocket. The adapter is suitable for cogsets with small sprockets grouped in a monolithic grouping.

Abstract: A process for manufacturing a bicycle component and a bicycle component manufactured by the process. The process includes protecting a printed circuit board, inserting the protected printed circuit board into the mold cavity, inserting a composite material into the mold cavity so it is around and in contact with the circuit board, and subjecting the mold cavity to a temperature and pressure profile until the composite material hardens.

Abstract: A composite rim for a bicycle wheel that has a wall of structural fibers incorporated in a thermosetting polymeric material and a plurality of spoke attachment seats. The composite material includes at least one layer of woven bi-directional fibers where some fibers are in a nominal direction substantially parallel to the circumferential direction of the rim and some fibers are substantially orthogonal to the circumferential direction of the rim.

Abstract: A control device of a bicycle hydraulic brake, comprising a cylinder, a tank, a piston slidably mounted in the cylinder to move between at least one first rest position in which the cylinder and the tank are in fluid communication and at least one second position in which the piston interrupts the fluid communication between the cylinder and the tank, a stop device that acts directly or indirectly on the piston. The cylinder and the tank are filled with hydraulic fluid and the stop device can take up a storage and transportation configuration in which it arranges the piston in said at least one second position.

Abstract: A bicycle sprocket has a plurality of teeth arranged one after the other along a circumferential direction and a plurality of spaces each of which being arranged between two of said teeth. Said plurality of teeth includes at least one first gearshifting tooth and at least one second tooth arranged immediately downstream of said at least one first gearshifting tooth with reference to a rotation direction (R) of the sprocket during pedaling. Said plurality of spaces includes at least one first space defined between said at least one first gearshifting tooth and said at least one second tooth and having a predetermined circumferential extension and at least one second space arranged downstream of said at least one second tooth with reference to said rotation direction (R) and having a circumferential extension greater than that of said at least one first space.

Abstract: An actuator device for a bicycle gearshift includes an actuation linkage, a drive member configured to control the deformation of the actuation linkage and comprising a motion transmission element having a rotation axis (X), and a fastening/release mechanism operatively arranged between the motion transmission element and a connection rod of the actuation linkage. The fastening/release mechanism has a first member rotatable about the rotation axis (X) as a unit with said motion transmission element, a second member rotatable about the rotation axis (X) together with said connection rod, an elastic element operatively arranged between the first member and the second member and that exerts a predetermined pre-load stress on the first member and on the second member.