Abstract: A method for making a bicycle rim, having a rim body with at least one integrated cavity . The cavity is enclosed by a component wall. The rim body extends in a rim plane over 360° transverse to its rotational axis. The cavity forms a chamber in the rim body. A plurality of component walls have two lateral rim flanks, a radial inner rim base and a radial outer rim well, which limit the chamber. A rim body support structure is formed by a fibre structure. A fibre bundle is attached to a carrier layer and passed reciprocally on the carrier layer to form a basic fibre layer of the fibre structure. The fibre structure is draped in a tool mould. A filling unit is placed in the tool mould so that the filling unit keeps the volume free for the cavity and the cavity is surrounded by the component wall.

Abstract: A manufacturing method for a fibrous composite bicycle rim, and a tool having two molding devices and one circular device. The two molding devices each have one flank contact surface. A molding device is selected and a matching auxiliary molding part is connected therewith, forming a mold surface for the rim base. A first fiber composite layer is applied to the molding device and the auxiliary molding part. The other molding device is covered with a first fiber composite layer, forming the layer of the other rim flank. A circular device is formed of annular segments has a circumferential rim well contact surface and is covered by a first fiber layer, which forms the rim well. The circular device and the molding devices are connected. The fibrous composite material is allowed to set, the annular segments and the molding devices are removed, and the rim is taken out.

Abstract: A method of manufacturing a fibrous composite bicycle rim, employs a tool device having a plurality of tool components including two molding devices and one circular device. The two molding devices each have one rim flank contact surface. The circular device includes a rim well contact surface. Tool components are provided, and a first varnish coat is applied to a rim contact surface and is dried. A first fiber layer of the fibrous composite material is applied to the flank contact surface of the molding devices, forming the outer fiber layers of the pertaining rim flanks. At least one first fiber layer of the fibrous composite material is applied to the circular device which forms the rim well. The tool components of are interconnected, and the tool device is closed, is heated up, and the smooth varnish coat firmly bonds with the hardening fibrous composite material.

Abstract: A facility and its use and method of examining the production quality of bicycle components with a control device, a heat source and a camera. The heat source applies heat on the bicycle component during a measuring process. The camera captures a spatially resolved thermal image of the bicycle component. The thermal image is evaluated to determine the production quality of the bicycle component. A deflecting device deflects heat radiation, to capture different sides of the bicycle component.

Abstract: A bicycle component including a cockpit unit with at least two cockpit modules. A first cockpit module is designed as a stem module. A second cockpit module is designed as a handlebar module. The cockpit modules can be coupled with each other in different ways to enable different seating positions with the cockpit unit. One of the cockpit modules includes an insertion part and one of the cockpit modules includes a receptacle part. The insertion part can be inserted into the receptacle part and can be connected to the insertion part in at least two different relative positions in order to provide two different operating geometries with the cockpit unit by assembling differently. A third cockpit module is arranged between the first and second cockpit modules and surrounds the first and/or second cockpit module in sections.

Abstract: A wheel component for bicycles with a straight spoke, with a center portion and two end portions, to detachably connect a hub with a rim. The spoke is supported on a hub and a rim by the end portions. The spoke is manufactured from a fibrous composite material and includes a matrix material and embedded reinforcing elements. The spoke is formed without loops and eyelets. The end portions are integral with the center portion, forming an end of the spoke each. At least one of the two end portions includes a threaded portion. At least some of the reinforcing elements are configured as long fibers extending through the entire center portion and over at least a substantial part of the two end portions each. At least one end portion includes a cross-sectional region with embedded reinforcing long fibers, and at least one cross-sectional portion without reinforcing embedded long fibers.

Abstract: A wheel component of a bicycle, including a spoke nipple with a nipple body and two opposite end portions remote from one another, to detachably connect a spoke of a wheel with a rim or a hub of a wheel. One of the end portions forms a nipple head. The nipple body has a takeup for an end of a spoke. The takeup includes a thread for fastening a spoke. The nipple body is manufactured from a fibrous composite material and includes reinforcing elements and at least one matrix material. The nipple body includes a tool receiving element to enable setting and adjusting the spoke tension.

Abstract: A facility and its use and method of examining the production quality of bicycle components with a control device, a heat source and a camera. The heat source applies heat on the bicycle component during a measuring process. The camera captures a spatially resolved thermal image of the bicycle component. The thermal image is evaluated to determine the production quality of the bicycle component. A deflecting device deflects heat radiation, to capture different sides of the bicycle component.

Abstract: A rim, having a rim body with rim flanks, a rim well and a rim base, in which the flanks abut in the radially most inwardly point, and with opposed rim flanges, each extending from one of the flanks up to a radially most outwardly point, so that the rim flanges form opposed side walls with the flanks. The widest spot of the rim body lies beneath the rim well and above a horizontal centerline. The width in the widest spot is at least one quarter larger than a clear rim width between the rim flanges. The side walls show a defined curvature shape with an inflection point which is disposed between the radially most outwardly point and the widest spot and lies external of the rim flange. In the inflection point, a concave curvature makes a transition to a convex curvature lying between the inflection point and the widest spot.

Abstract: A bicycle rim for bicycles with a rim body with a visible surface perceptible in proper operation, wherein a supporting structure of the rim body is made from fibrous composite materials of prepreg layers is disclosed. The rim body includes rim flanks disposed opposite one another, a rim well, and a rim base. The visible surface is formed by a thin non-woven layer on the supporting structure, so as to form directly during manufacturing, an optically appealing, visible surface on the rim body, involving no postprocessing. The non-woven layer forms on the rim body, an outer layer of a composite layer. The composite layer includes a prepreg layer and the non-woven layer.

Abstract: A method of manufacturing a fibrous composite bicycle rim , employs a tool device having a plurality of tool components including two molding devices and one circular device. The two molding devices each have one rim flank contact surface. The circular device includes a rim well contact surface. Tool components are provided, and a first varnish coat is applied to a rim contact surface and is dried. A first fiber layer of the fibrous composite material is applied to the flank contact surface of the molding devices, forming the outer fiber layers of the pertaining rim flanks. At least one first fiber layer of the fibrous composite material is applied to the circular device which forms the rim well. The tool components of are interconnected, and the tool device is closed, is heated up, and the smooth varnish coat firmly bonds with the hardening fibrous composite material.

Abstract: A tool device and its use for manufacturing a bicycle rim, having opposite rim flanks, a rim well and a rim base and rim flanges configured on the radially outwardly ends of the rim flanks, wherein the tool device includes two molding devices and a circular device. The circular device forms the rim well and the axially inwardly oriented surfaces of the rim flanges. The circular device includes an annular unit of a less elastic material and at least one cover of a more elastic material. Alternately, the molding devices each include a molding unit of a less elastic material and at least one cover of a more elastic material, for attachment thereto. The thickness of the cover is between one eighth of the minimum wall thickness of the rim well of the rim manufactured and eight times the minimum wall thickness of the rim well of the rim manufactured.

Abstract: A manufacturing method for a fibrous composite bicycle rim , and a tool having two molding devices and one circular device. The two molding devices each have one flank contact surface. A molding device is selected and a matching auxiliary molding part is connected therewith, forming a mold surface for the rim base. A first fiber composite layer is applied to the molding device and the auxiliary molding part. The other molding device is covered with a first fiber composite layer, forming the layer of the other rim flank. A circular device is formed of annular segments has a circumferential rim well contact surface and is covered by a first fiber layer, which forms the rim well. The circular device and the molding devices are connected. The fibrous composite material is allowed to set, the annular segments and the molding devices are removed, and the rim is taken out.