An arrangement for a bicycle frame including two rear frame members, each rear frame member including at least one first connection point at the front of each rear frame member, and one other connection point at the back of the rear frame member for a wheel, the at least one first connection point including a component for facilitating connection of the rear frame members via an axle, and the axle interlocking the rear frame members in a fixed position to each other. A bicycle frame and a corresponding method of manufacture and method of assembly are also presented.

An arrangement for a bicycle frame including two rear frame members, each rear frame member including at least one first connection point at the front of each rear frame member, and one other connection point at the back of the rear frame member for a wheel, the at least one first connection point including a component for facilitating connection of the rear frame members via an axle, and the axle interlocking the rear frame members in a fixed position to each other. A bicycle frame and a corresponding method of manufacture and method of assembly are also presented.

Transportation vehicles, suspension systems and related methods are provided herein. A three wheeled vehicle can include a frame having a first side and second side and a front end and a rear end and a steerable front wheel secured to the front end of the frame. The vehicle can also include a first trailing wheel arm with a first rear wheel and a second trailing wheel arm with a second rear wheel. The vehicle can also include a central suspension joint secured to the frame on which the first trailing wheel arm and the second trailing wheel arm are rotatably secured on either side of the frame. Further, the vehicle can include a horizontal linkage having a first end and a second end and a midsection between the first and second ends. The horizontal linkage can be pivotably connected to a pintle on the frame at the midsection beneath the first and second trailing wheel arms with the horizontal linkage linked to an underside of the first trailing wheel arm between the first wheel and the central suspension joint proximal to the first end of the horizontal linkage and linked to an underside of the second trailing wheel arm between the second wheel and the central suspension joint proximal to the second end of the horizontal linkage.

Transportation vehicles, suspension systems and related methods are provided herein. A three wheeled vehicle can include a frame having a first side and second side and a front end and a rear end and a steerable front wheel secured to the front end of the frame. The vehicle can also include a first trailing wheel arm with a first rear wheel and a second trailing wheel arm with a second rear wheel. The vehicle can also include a central suspension joint secured to the frame on which the first trailing wheel arm and the second trailing wheel arm are rotatably secured on either side of the frame. Further, the vehicle can include a horizontal linkage having a first end and a second end and a midsection between the first and second ends. The horizontal linkage can be pivotably connected to a pintle on the frame at the midsection beneath the first and second trailing wheel arms with the horizontal linkage linked to an underside of the first trailing wheel arm between the first wheel and the central suspension joint proximal to the first end of the horizontal linkage and linked to an underside of the second trailing wheel arm between the second wheel and the central suspension joint proximal to the second end of the horizontal linkage.

A bicycle may include a front triangle and a rear suspension system that couples the front triangle to a rear wheel and is dampened by at least one shock absorber. The rear suspension system includes a six-bar linkage having two ternary links separated from each other by one or more binary links, such that the two ternary links do not share a common joint. One of the ternary links may comprise a chain stay. In some examples, the other ternary link may comprise the front triangle. In some examples, the other ternary link may comprise a rocker arm coupling a seat stay link to the shock absorber.

A bicycle may include a front triangle and a rear suspension system that couples the front triangle to a rear wheel and is dampened by at least one shock absorber. The rear suspension system includes a six-bar linkage having two ternary links separated from each other by one or more binary links, such that the two ternary links do not share a common joint. One of the ternary links may comprise a chain stay. In some examples, the other ternary link may comprise the front triangle. In some examples, the other ternary link may comprise a rocker arm coupling a seat stay link to the shock absorber.

A bicycle is disclosed. In certain examples, the bicycle includes a head tube coupled to a top tube and a down tube, and a seat tube coupled to the top tube and the down tube. The bicycle is coupled to a rear suspension system in certain examples. The rear suspension includes an upper linkage member pivotally coupled at a first pivot point with the bicycle frame and pivotally coupled at a second pivot point with a rear suspension system. The rear suspension also includes a lower linkage member pivotally coupled at a first pivot point with the bicycle frame and pivotally coupled at a second pivot point with the rear suspension system, and where the lower linkage member includes a bottom bracket shell.

A bicycle is disclosed. In certain examples, the bicycle includes a head tube coupled to a top tube and a down tube, and a seat tube coupled to the top tube and the down tube. The bicycle is coupled to a rear suspension system in certain examples. The rear suspension includes an upper linkage member pivotally coupled at a first pivot point with the bicycle frame and pivotally coupled at a second pivot point with a rear suspension system. The rear suspension also includes a lower linkage member pivotally coupled at a first pivot point with the bicycle frame and pivotally coupled at a second pivot point with the rear suspension system, and where the lower linkage member includes a bottom bracket shell.

A bicycle may include a front triangle and a rear suspension system that couples the front triangle to a rear wheel and is dampened by at least one shock absorber. The rear suspension system includes a six-bar linkage having two ternary links separated from each other by one or more binary links, such that the two ternary links do not share a common joint. One of the ternary links may comprise a chain stay. In some examples, the other ternary link may comprise the front triangle. In some examples, the other ternary link may comprise a rocker arm coupling a seat stay link to the shock absorber.

A bicycle may include a front triangle and a rear suspension system that couples the front triangle to a rear wheel and is dampened by at least one shock absorber. The rear suspension system includes a six-bar linkage having two ternary links separated from each other by one or more binary links, such that the two ternary links do not share a common joint. One of the ternary links may comprise a chain stay. In some examples, the other ternary link may comprise the front triangle. In some examples, the other ternary link may comprise a rocker arm coupling a seat stay link to the shock absorber.