This design incorporates four separate modules which are bolted together in this succession: a welded, structural single-unit steering tube/downtube module; independent, twin, front-to-rear horizontal frame rails which serve as the support for the rider to stand; a welded, structural single-unit module to mount shock absorbers and a swingarm; and, a welded swingarm. The defined space between the twin frame rails and the two adjoining modules can be modified by altering the length of the frame rails and/or using spacers between each rail and its corresponding module at the bolt-on location.

This design incorporates four separate modules which are bolted together in this succession: a welded, structural single-unit steering tube/downtube module; independent, twin, front-to-rear horizontal frame rails which serve as the support for the rider to stand; a welded, structural single-unit module to mount shock absorbers and a swingarm; and, a welded swingarm. The defined space between the twin frame rails and the two adjoining modules can be modified by altering the length of the frame rails and/or using spacers between each rail and its corresponding module at the bolt-on location.

The present disclosure is directed to a bicycle frame having a lug that is connected with a tube. The lug may be produced by shaping and bonding at least two plates.

The present disclosure provides a bicycle frame including: a main frame; a support bracket formed separately from the main frame and bonded to a lower end portion of the main frame, and a motor mounting having a motor mounting portion configured to mount a motor therein, wherein the motor mounting bracket is formed separately from the support bracket, and is bonded to the support bracket.

The present disclosure proposes a part of a cycle frame, such as a bicycle frame for example, and also a part of a cycle fork. The part of the cycle frame or of the cycle fork comprises a core (10) and at least two shells (11, 12) that surround the core and are fixed to the core without being fixed directly to each other.

The present disclosure also relates to a method to assemble a cycle frame or a part of a cycle frame or a cycle fork or a part of a cycle fork.

A method for manufacturing a hollow vehicle frame part includes: removing material from a first side of a first billet to create a first inner shape of a target vehicle frame such a substantially angled faying surface remains adjacent to the first inner shape; removing material from a first side of a second billet to create a second inner shape, such that a substantially angled faying surface is left on the first side of the second billet adjacent to the second inner shape; bonding the first and second billets together at the faying surfaces such that the first and second inner shapes face each other and such that the angled faying surfaces together form a bevel-type joint; after bonding, removing material by machining from the second sides of the first and second billets to create target outer shape of the vehicle frame part.

A method for manufacturing a hollow vehicle frame part includes: removing material from a first side of a first billet to create a first inner shape of a target vehicle frame such a substantially angled faying surface remains adjacent to the first inner shape; removing material from a first side of a second billet to create a second inner shape, such that a substantially angled faying surface is left on the first side of the second billet adjacent to the second inner shape; bonding the first and second billets together at the faying surfaces such that the first and second inner shapes face each other and such that the angled faying surfaces together form a bevel-type joint; after bonding, removing material by machining from the second sides of the first and second billets to create target outer shape of the vehicle frame part.

A vehicle includes a body frame including a connecting bracket including a unitary connector that connects a front end of a right frame and a front end of a left frame, and an extension that extends to the front of the vehicle from the connector to be welded to a link support at a front end thereof. When the vehicle is seen from the front thereof, a weld between the extension and the link support is located on an imaginary central straight line that passes a middle upper axis and a middle lower axis above or below a turning support in an up-and-down direction of the body frame.

A vehicle includes a body frame including a main frame, a link support, and a connecting bracket that connects a front portion of the main frame and the link support. The connecting bracket includes a turning support that supports a lower cross member, a connector that connects a front portion of the main frame and the link support and a right reinforcement wall and a left reinforcement wall that extend in an up-and-down direction to connect the turning support and the connector. The connecting bracket including the turning support, the connector, the right reinforcement wall, and the left reinforcement wall is monolithic and unitary.

A frame unit for a two-wheeled vehicle may comprise a main frame. The main frame may be formed by a first partial shell and a second partial shell that is joined to the first partial shell. The first partial shell and the second partial shell may be produced from a material comprising steel. The main frame may further comprise an upper tube, a lower tube, a seat tube, and/or a head tube. A rear section may be joined to the main frame and may include a chain stay and/or a seat stay. Further, each of the first and second partial shells may form a lateral half of the main frame, and the first and second partial shells may have a C-shaped cross section. The frame unit avoids the disadvantages of the prior art and offers a high degree of design freedom.