An adjustable head angle bicycle assembly includes a steerer tube; a head tube that includes a first annular surface protruding radially inward from an inner wall at the upper end, and a second annular surface protruding radially inward from the inner wall at the lower end; an upper cup that includes a third annular surface engaged with the first annular surface of the head tube; and a lower cup that includes a fourth annular surface engaged with the second annular surface of the head tube.

A head tube assembly mounted between a head tube and a front fork of a vehicle includes a cup member mounted fixedly to the head tube, an insertion member, and a damping unit. The insertion member is connected co-rotatably to the front fork about an axis and includes an insertion body. The damping unit is disposed between the cup member and the insertion member, and includes inner and outer seats and a bushing. The outer seat is fixedly connected to the cup member. The inner seat is connected co-rotatably to the insertion member. The bushing is mounted on the axis between the inner and outer seats that are in frictional contact with the bushing and rotatable relative to the bushing about the axis. Each of the inner seat and the insertion body has an eccentric structure such that the insertion member drives rotation of the inner seat as being rotated.

A head tube assembly mounted between a head tube and a front fork of a vehicle includes a cup member mounted fixedly to the head tube, an insertion member, and a damping unit. The insertion member is connected co-rotatably to the front fork about an axis and includes an insertion body. The damping unit is disposed between the cup member and the insertion member, and includes inner and outer seats and a bushing. The outer seat is fixedly connected to the cup member. The inner seat is connected co-rotatably to the insertion member. The bushing is mounted on the axis between the inner and outer seats that are in frictional contact with the bushing and rotatable relative to the bushing about the axis. Each of the inner seat and the insertion body has an eccentric structure such that the insertion member drives rotation of the inner seat as being rotated.

A bearing includes a first annular member, a second annular member, and a plurality of rolling members. A receiving space is formed between the second annular member and the first annular member. The rolling members are disposed in the receiving space. The first annular member, the second annular member, and the rolling members are rotatable relative to one another. A damping grease is filled in the receiving space and is arranged between the rolling members to provide a damping force while the bearing is rotating. A viscosity of the damping grease ranges between 200 cSt and 200000 cSt.

A bearing includes a first annular member, a second annular member, and a plurality of rolling members. A receiving space is formed between the second annular member and the first annular member. The rolling members are disposed in the receiving space. The first annular member, the second annular member, and the rolling members are rotatable relative to one another. A damping grease is filled in the receiving space and is arranged between the rolling members to provide a damping force while the bearing is rotating. A viscosity of the damping grease ranges between 200 cSt and 200000 cSt.

A cable routing assembly, disposed on a headset of a bicycle and having a through hole fitting around a steerer tube of the bicycle, includes a top annular base having a first through hole and a first cable groove and a bottom annular base having a second through hole and a second cable groove. When the top annular base is engaged with the bottom annular base, the top annular base and the bottom annular base jointly form an internal space, and the first cable groove and the second cable groove jointly surround to form a cable channel communicating between an external space and the internal space. The first through hole communicates with the second through hole to form the through hole. An axial direction and a channel direction that are not parallel are defined. The through hole extends along the axial direction. The cable channel extends along the channel direction.

A magnetic bicycle headset includes a first casing engaged with a headtube of a bicycle and a second casing engaged with a fork of the bicycle. A bearing abuts between the first casing and the second casing. The first casing has a first magnet seat for arranging a plurality of first magnets around an axis of the first casing. The second casing has an electrical conductor ring rotating relative to the first magnet around the axis of the first casing. A magnetic field of each first magnet movably passes through the electrical conductor ring. When the electrical conductor ring rotates relative to the first magnets, an eddy current between the electrical conductor ring and the first magnets generates a countering resistance resisting the rotation, so that the present disclosure could reduce a speed and a degree of the rotation of the second casing and the fork relative to the headtube.

A magnetic bicycle headset includes a first casing engaged with a headtube of a bicycle and a second casing engaged with a fork of the bicycle. A bearing abuts between the first casing and the second casing. The first casing has a first magnet seat for arranging a plurality of first magnets around an axis of the first casing. The second casing has an electrical conductor ring rotating relative to the first magnet around the axis of the first casing. A magnetic field of each first magnet movably passes through the electrical conductor ring. When the electrical conductor ring rotates relative to the first magnets, an eddy current between the electrical conductor ring and the first magnets generates a countering resistance resisting the rotation, so that the present disclosure could reduce a speed and a degree of the rotation of the second casing and the fork relative to the headtube.

A rotor system for a bicycle (1), for the purpose of bearing a fork (8) and transmitting the actuations of Bowden cables (31, 32), which each having a core (31a; 32a) includes first and second transmission elements (36, 37), that rotate relative to one another and are arranged in the area of the bearing (21, 23, 25) of the fork (8). The transmission elements include an annular region, mounted on a fork steerer (12) and surrounded by a head tube (21), and connection areas (36b; 37b) for the direct or indirect attachment of the rotor-side ends of the cores (31a 32a). At least one of the transmission elements (37) includes a connection area (37b) with a connecting element, which (32b) can be form-fittingly attached, interacting with, or being integrally connected to, the rotor side end of the core (32a) that is assigned with said at least one transmission elements (37).

A rotor system for a bicycle (1), for the purpose of bearing a fork (8) and transmitting the actuations of Bowden cables (31, 32), which each having a core (31a; 32a) includes first and second transmission elements (36, 37), that rotate relative to one another and are arranged in the area of the bearing (21, 23, 25) of the fork (8). The transmission elements include an annular region, mounted on a fork steerer (12) and surrounded by a head tube (21), and connection areas (36b; 37b) for the direct or indirect attachment of the rotor-side ends of the cores (31a 32a). At least one of the transmission elements (37) includes a connection area (37b) with a connecting element, which (32b) can be form-fittingly attached, interacting with, or being integrally connected to, the rotor side end of the core (32a) that is assigned with said at least one transmission elements (37).