Abstract: A bicycle frame including a head tube and a bottom bracket adapted to support a crankset. The frame also includes a tubular frame member that is coupled to the head tube and that has a concave section disposed on an underside of the frame member and spaced from the head tube.

Abstract: A bicycle damping system is arranged to reduce vibrations that originate at the bicycle wheel and are transmitted to the rider of the bicycle. Desirably, a front fork assembly is configured to be supported by a bicycle frame and includes a pair of fork legs, which extend in a downward direction along opposing sides of a front wheel of the bicycle. Preferably, the fork legs are configured to support the front wheel at their lower ends. Each of the fork legs can define a cavity and a damping member is positioned within the cavity. The damping member can be forced into contact with a surface of the fork leg. Seat stays, chain stays, the seat post and other components of the bicycle can also include a damping system.

Abstract: A bicycle seat support that resiliently supports a bicycle seat and comprises an upper engagement member adapted to support a bicycle seat, a lower engagement member adapted to engage a bicycle frame, and a compliant support assembly coupling the upper engagement member to the lower engagement member. The compliant support assembly includes a first cantilevered beam cantilevered to the lower engagement member, and a second cantilevered beam cantilevered to the first cantilevered beam. The first and second cantilevered beams define a gap, and a resilient member is positioned in the gap. Preferably, the cantilevered beams include convex surfaces, and the resilient member includes concave surfaces shaped to receive the convex surfaces. The resilient member can include a body portion and a strut (e.g., two struts). The resilient member can also include a side surface and a recess in the side surface (e.g., extending all the way through the resilient member).

Abstract: A bicycle including a frame that has a head tube. The bicycle also includes a fork that is rotationally coupled to the head tube and that has a steerer tube extending upward through the head tube, a wheel rotationally coupled to the fork, a handlebar, and a stem assembly. The stem assembly is coupled to and extends from the steerer tube to attach the handlebar to the fork. The stem assembly includes a stem, a shim that is coupled to the stem, and a clamp contacting both the shim and the handlebar to secure the handlebar to the stem assembly.

Abstract: A bicycle frame that supports a front wheel and a rear wheel defining a central plane. The bicycle frame includes a head tube, a bottom bracket configured to support a crank assembly, and a bicycle frame portion. The bicycle frame portion includes a leading edge and a trailing edge oriented such that a chord line between the leading edge and the trailing edge defines an angle of incidence greater than zero degrees relative to the central plane.

Abstract: A bicycle including a frame that has a bottom bracket, a first bicycle component, a second bicycle component coupled and responsive to the first bicycle component, and a sensor apparatus coupled to and sandwiched between the first component and the second component. The bicycle also includes a pedal coupled to the crankset and operable to propel the bicycle in response to a force acting on the pedal. The first bicycle component is acted upon by the pedal in response to the force. The sensor apparatus includes a sensor element positioned to sense a force transferred from the first component to the second component and indicative of the force acting on the pedal.

Abstract: A bicycle including a main frame, a front wheel mounted for rotation relative to the main frame. a rear dropout, and a rear wheel mounted for rotation relative to the rear dropout about an axis. The rear wheel defines a center plane of the bicycle and is driven by a chain. The bicycle also includes a seat stay coupling the rear dropout to the main frame. The seat stay has an inner surface facing the rear wheel and an outer surface facing away from the rear wheel. The seat stay includes a steep portion having an outer surface disposed at a steep angle of between about 25 degrees and about 75 degrees relative to the center plane, and at least a portion of the steep portion is disposed outboard of the chain.

Abstract: A bicycle frame comprising a first tubular member having a first main portion and a first interface portion (e.g., a rounded taper), and a second tubular member having a second main portion and a second interface portion engaged with the first interface portion to create a joint. The joint includes a peripheral channel defined between the first interface portion and the second interface portion, and a weld is positioned in the peripheral channel. The second interface portion is defined at least partially by a substantially flat face wall. Preferably, the first tubular member includes an open end at the first interface portion, while the flat face wall at the second interface portion is substantially closed. In addition, it is preferred that the face wall lies in a plane that is substantially parallel to a longitudinal axis of the head tube (e.g., within ten degrees of the longitudinal axis).

Abstract: A crankset for a bicycle that includes a first crank, a second crank, a spindle, a bearing, and a preload mechanism. Each of the first crank and the second crank has an end adapted to engage a pedal. The spindle defines an axis and includes a first end that is coupled to the first crank and a second end that is coupled to the second crank. The bearing positioned around the spindle between the first crank and the second crank to permit rotation of the spindle. The preload mechanism is coupled to the spindle between the bearing and the first crank. The preload mechanism includes a washer that extends circumferentially around the spindle and a cam member that is engageable with the washer to move the washer along the axis to preload the bearing.

Abstract: A bicycle damping system is arranged to reduce vibrations that originate at the bicycle wheel and are transmitted to the rider of the bicycle. Desirably, a front fork assembly is configured to be supported by a bicycle frame and includes a pair of fork legs, which extend in a downward direction along opposing sides of a front wheel of the bicycle. Preferably, the fork legs are configured to support the front wheel at their lower ends. Each of the fork legs can define a cavity and a damping member is positioned within the cavity. The damping member can be forced into contact with a surface of the fork leg. Seat stays, chain stays, the seat post and other components of the bicycle can also include a damping system.

Abstract: A bicycle damping system is arranged to reduce vibrations that originate at the bicycle wheel and are transmitted to the rider of the bicycle. A portion of a bicycle frame and/or bicycle fork can include define a cavity and a damping member is positioned within the cavity. The damping member can be forced into contact with a surface of the cavity. Fork legs, seat stays, chain stays, the seat post are all examples portions of the bicycle frame that may include a damping system.

Abstract: A bicycle damping system is arranged to reduce vibrations that originate at the bicycle wheel and are transmitted to the rider of the bicycle. A portion of a bicycle frame and/or bicycle fork can define a cavity and a damping member is positioned within the cavity. The damping member can be forced into contact with a surface of the cavity. Fork legs, seat stays, chain stays, the seat post are all examples portions of the bicycle frame that may include a damping system.

Abstract: A bicycle seat support that resiliently supports a bicycle seat and comprises an upper engagement member adapted to support a bicycle seat, a lower engagement member adapted to engage a bicycle frame, and a compliant support assembly coupling the upper engagement member to the lower engagement member. The compliant support assembly includes a first cantilevered beam cantilevered to the lower engagement member, and a second cantilevered beam cantilevered to the first cantilevered beam. The first and second cantilevered beams define a gap, and a resilient member is positioned in the gap. Preferably, the cantilevered beams include convex surfaces, and the resilient member includes concave surfaces shaped to receive the convex surfaces. The resilient member can include a body portion and a strut (e.g., two struts). The resilient member can also include a side surface and a recess in the side surface (e.g., extending all the way through the resilient member).

Abstract: A method of designing and manufacturing a model of bicycles in such a manner that the size (e.g., diameter) of the head tube bearings and/or the stiffness of the forks varies between frame sizes. The method includes selecting a first and second lower headset bearing sizes for the first and second frame sizes, respectively, wherein the first lower headset bearing size is different size than the second lower headset bearing size. The method further includes manufacturing first bicycles of the first frame size and second bicycles of the second frame size, and coupling the first and second lower headset bearings to the first and second bicycles, respectively. The same model designations are then attached to each of the first and second bicycles. The difference in size of the lower headset bearings and/or fork steerer tubes can be substantially proportional to the difference in length of the seat tube.

Abstract: A bicycle that includes a main frame, a front wheel mounted for rotation relative to the main frame, a rear dropout, and a rear wheel mounted for rotation relative to the rear dropout. The rear wheel defines a center plane of the bicycle. The bicycle further includes a rear stay that couples the rear dropout to the main frame. The rear stay has an inner surface facing the rear wheel and an outer surface facing away from the rear wheel. The rear stay includes a steep portion having an outer surface at a steep angle of between about 25 degrees and about 75 degrees relative to the center plane.

Abstract: A bicycle assembly can include a main frame having a bottom bracket shell to receive a bottom bracket. The bottom bracket shell can be made of carbon fiber with one or more metal rings to serve as bearing surfaces within the bottom bracket shell. The metal rings may also be split metal rings with a gap between two spaced apart ends.

Abstract: A bicycle damping system is arranged to reduce vibrations that originate at the bicycle wheel and are transmitted to the rider of the bicycle. Desirably, a front fork assembly is configured to be supported by a bicycle frame and includes a pair of fork legs, which extend in a downward direction along opposing sides of a front wheel of the bicycle. Preferably, the fork legs are configured to support the front wheel at their lower ends. Each of the fork legs can define a cavity and a damping member is positioned within the cavity. The damping member can be forced into contact with a surface of the fork leg. Seat stays, chain stays, the seat post and other components of the bicycle can also include a damping system.

Abstract: A bicycle including a front wheel, a rear wheel, and a frame supported on the front and rear wheels, the frame having a frame member. The bicycle further includes a first fairing member protruding outward from the frame member and having a side surface defining an aerodynamic trailing edge and a second fairing member detachably mounted on the first fairing member such that the side surface is exposed.

Abstract: A bicycle frame including a head tube and a bottom bracket adapted to support a crankset. The frame also includes a tubular frame member that is coupled to the head tube and that has a concave section disposed on an underside of the frame member and spaced from the head tube.

Abstract: A bicycle including a frame that has a head tube. The bicycle also includes a fork that is rotationally coupled to the head tube and that has a steerer tube extending upward through the head tube, a wheel rotationally coupled to the fork, a handlebar, and a stem assembly. The stem assembly is coupled to and extends from the steerer tube to attach the handlebar to the fork. The stem assembly includes a stem, a shim that is coupled to the stem, and a clamp contacting both the shim and the handlebar to secure the handlebar to the stem assembly.