Abstract: A track racing bicycle having a head tube and/or down tube with asymmetrical left and right sides. A left side of the head tube and/or down tube may be closer to a central plane of a frame of the track racing bicycle for aerodynamic purposes. Moreover, the drivetrain may be disposed on the left side of the frame instead of the right side. Also, a rear wheel of the track racing bicycle may have a mechanism for mitigating or prohibiting forward slip of the rear wheel in the rear dropouts.

Abstract: An aerodynamic braking system is disclosed herein. In particular, the brake arms may define an aerodynamic leading portion or edge and may be integrated into the legs of the front fork. Also, the brake arms may be disposed behind the bottom bracket shell to take the rear brake out of the air flow path and reduce aerodynamic drag. The rear brake arms are tapered so that the brake arms remain sufficient stiff to provide sufficient brake response times. The rear brake arms may be matched to recesses formed on an underside of chain stays.

Abstract: The bicycle may have a frame and a seat post. A cross section of the seat post may have an airfoil shape wherein a leading surface is sharper (i.e. less round) compared to prior art airfoil shaped bicycle frames. Additionally, a maximum thickness of the airfoil shape may be located more rearward compared to prior art airfoil shaped bicycle frames and bicycle front forks. This configuration may provide for a reduction in drag. A battery pack may be mounted to a rear side of the seat post.

Abstract: An aerodynamic braking system is disclosed herein. In particular, the brake arms may define an aerodynamic leading portion or edge and may be integrated into the legs of the front fork. Also, the brake arms may be disposed behind the bottom bracket shell to take the rear brake out of the air flow path and reduce aerodynamic drag. The rear brake arms are tapered so that the brake arms remain sufficient stiff to provide sufficient brake response times. The rear brake arms may be matched to recesses formed on an underside of chain stays.

Abstract: An aerodynamic braking system is disclosed herein. In particular, the brake arms may define an aerodynamic leading portion or edge and may be integrated into the legs of the front fork. Also, the brake arms may be disposed behind the bottom bracket shell to take the rear brake out of the air flow path and reduce aerodynamic drag. The rear brake arms are tapered so that the brake arms remain sufficient stiff to provide sufficient brake response times. The rear brake arms may be matched to recesses formed on an underside of chain stays.

Abstract: The bicycle may have a frame and a seat post. A cross section of the seat post may have an airfoil shape wherein a leading surface is sharper (i.e. less round) compared to prior art airfoil shaped bicycle frames. Additionally, a maximum thickness of the airfoil shape may be located more rearward compared to prior art airfoil shaped bicycle frames and bicycle front forks. This configuration may provide for a reduction in drag. A battery pack may be mounted to a rear side of the seat post.

Abstract: An aerodynamic braking system is disclosed herein. In particular, the brake arms may define an aerodynamic leading portion or edge and may be integrated into the legs of the front fork. Also, the brake arms may be disposed behind the bottom bracket shell to take the rear brake out of the air flow path and reduce aerodynamic drag. The rear brake arms are tapered so that the brake arms remain sufficient stiff to provide sufficient brake response times. The rear brake arms may be matched to recesses formed on an underside of chain stays.

Abstract: The bicycle may have a frame and a front fork. A cross section of the frame or the front fork may have an airfoil shape wherein a leading surface is sharper (i.e. less round) compared to prior art airfoil shaped bicycle front forks and bicycle frames. Additionally, a maximum thickness of the airfoil shape may be located more rearward compared to prior art airfoil shaped bicycle frames and bicycle front forks. This configuration provides for a reduction in drag for headwind speeds of about twenty (20) to thirty (30) miles per hour and headwind angles of plus or minus fifteen (15) degrees.

Abstract: The bicycle may have a frame and a seat post. A cross section of the seat post may have an airfoil shape wherein a leading surface is sharper (i.e. less round) compared to prior art airfoil shaped bicycle frames. Additionally, a maximum thickness of the airfoil shape may be located more rearward compared to prior art airfoil shaped bicycle frames and bicycle front forks. This configuration may provide for a reduction in drag. A battery pack may be mounted to a rear side of the seat post.

Abstract: The bicycle may have a frame and a front fork. A cross section of the frame or the front fork may have an airfoil shape wherein a leading surface is sharper (i.e. less round) compared to prior art airfoil shaped bicycle front forks and bicycle frames. Additionally, a maximum thickness of the airfoil shape may be located more rearward compared to prior art airfoil shaped bicycle frames and bicycle front forks. This configuration provides for a reduction in drag for headwind speeds of about twenty (20) to thirty (30) miles per hour and headwind angles of plus or minus fifteen (15) degrees.

Abstract: The bicycle may have a frame and a seat post. A cross section of the seat post may have an airfoil shape wherein a leading surface is sharper (i.e. less round) compared to prior art airfoil shaped bicycle frames. Additionally, a maximum thickness of the airfoil shape may be located more rearward compared to prior art airfoil shaped bicycle frames and bicycle front forks. This configuration may provide for a reduction in drag. A battery pack may be mounted to a rear side of the seat post.

Abstract: A bottom bracket assembly for a bicycle is provided. The bottom bracket assembly may comprise a left bearing, bottom bracket shell and a right bearing. The bottom bracket shell may be threadless and have beveled surfaces for mounting the left and right bearings onto the bottom bracket assembly. A spindle is inserted through the bottom bracket shell. Thereafter, the left and right bearings are preloaded to align the central axis of the spindle to the crankarm rotating axis such that the spindle or left and right crankarms do not wobble and yet do not bind when rotated.

Abstract: A bottom bracket assembly for a bicycle is provided. The bottom bracket assembly may comprise a left bearing, bottom bracket shell and a right bearing. The bottom bracket shell may be threadless and have beveled surfaces for mounting the left and right bearings onto the bottom bracket assembly. A spindle is inserted through the bottom bracket shell. Thereafter, the left and right bearings are preloaded to align the central axis of the spindle to the crankarm rotating axis such that the spindle or left and right crankarms do not wobble and yet do not bind when rotated.

Abstract: A rear suspension of a bicycle may have an upper link and lower link which are pivotally connected to both a front frame and a rear frame of the bicycle such that the rear frame may rotate up and down about the front frame/front sprocket. A shock absorber may be pivotally connected to the upper link to absorb any impact forces imposed on the rear wheel and transferred to the upper link as the rear frame rotates up and down. Also, the upper link may be interconnected to the lower link with a tie link which allows the upper and lower links to work in conjunction with each other such that pedal setback is negligible when the rear wheel rides over bumps along the bike trail. Additionally, the tie link equalizes the forces caused by the rider's weight and pedaling forces.

Abstract: An expansion engagement crank assembly for a bicycle. The assembly includes a female crank arm, a male crank arm, and a connector for connecting the female arm and the male arm. The female arm has a shaft sleeve attached at one end, the sleeve having an inboard end, an outboard end, and a bore originating at the inboard end. The bore is bounded by a mating surface and a a fastener surface. The male arm has a shaft attached at one end and the shaft has a radially expandable inboard end and an outboard end. The inboard end of the shaft is sized for insertion within the bore of the sleeve and has a complimentary mating exterior surface for engaging the mating surface bounding the bore. The shaft additionally has an interior coupling surface defining a passage extending through the shaft from the inboard end to the outboard end. The connector is sized for placement within the bore of the sleeve and the passage of the shaft.