Disclosed are motorcycle frame assemblies comprised of carbon fibers. Methods of making the disclosed motorcycle frame assemblies are also disclosed. In one aspect, the frame assembly of the motorcycle comprises a structural member that includes an engine compartment member, which is adapted to receive an engine on a portion of an inner surface of an opening defined within the engine compartment member. In one further aspect, the structural member comprises a carbon fiber material.

An apparatus for linearly driving a vehicle or machine. The apparatus includes a frame, at least one drive wheel, and at least one rotatable driver comprising a pulley or a sprocket, rotatably mounted with respect to the frame. Further, the system includes a flexible, elongated power transmitter comprising a belt, a chain, or a cable, the transmitter being mounted for reciprocating linear motion with respect to the frame and passing around and engaging the rotatable driver to rotate the driver i...

A bicycle frame includes two first through holes respectively defined in two opposed points in a periphery of the head tube to communicate with the down tube so as to allow extension of a first derailleur cable for a front derailleur and a second derailleur cable for a rear derailleur. The bottom bracket has a down tube hole for communication with an interior of the down tube, two chain stay holes for communication with each of the two chain stays and two bellow tube holes for extension of two a...

A bicycle includes a frame having front and rear sections. The frame includes a pair of guides that are disposed in a parallel relationship and carry a portion of the load generated by a seated rider. The guides define therebetween a pedal drive path that extends parallel to the guides. A rear wheel is rotatably mounted to the frame adjacent the rear section. An elongate flexible connector forms a loop. A seat is mounted to the frame for support of a rider. A drive mechanism is connected to the ...

A cycle in the form of a bicycle or a tricycle has an elongate horizontal main frame member with a rear wheel support assembly at the rear end and a front wheel support assembly at the front end. The front wheel support assembly supports the steerable front wheel at the lower end of a slanted steering column and handlebars at the top end slanted toward the rear. A seat and seat back are supported on a rearward-slanting seat standard that is clamped onto the horizontal frame member and may be adj...

A two wheel semi-recumbent bicycle provided in several embodiments on which the rider sits elevated above the rear wheel on a high-back bucket style seat supported by an angled top tube. The position of the pedal crank assembly is forward and upward of the pedal crank position of conventional bicycles and downward and rearward of that normally associated with fully recumbent bicycles relative to the seat. The rider steers by way of long upwardly curved handlebars affixed to an elongated steering...

A rugged but inexpensive bicycle frame comprises a tubular head post welded to the flattened forward end of a relatively large diameter tubular crossbar. The rear end of the crossbar is flattened laterally and provided with a concave rear edge. A tubular rear fork has a rounded bridge portion which is fitted to the crossbar rear edge so that the nominal plane of the rear fork is perpendicular to the headpost. Welds permanently connect the front and rear ends of the crossbar to the headpost and r...

A method and apparatus for connecting side-by-side recumbent bicycles to form a quadracycle. The apparatus includes a pair of recumbent bicycles having front wheels and rear wheels. The bicycles have substantially rigid frame members supporting the front wheels and the rear wheels, and the frame members are aligned substantially upright and parallel. The apparatus also includes a single rigid connecting member located between the frame members and attached thereto such that substantially upright...

A bicycle includes a bicycle frame, a wheel set, a treading unit, a handlebar unit, and a seat unit. The bicycle frame has front and rear ends. The wheel set includes front and rear wheels disposed respectively on the front and rear ends of the bicycle frame. The treading unit is mounted on the bicycle frame for transmitting treading power to the wheel set. The handlebar unit is mounted on the bicycle frame and is coupled to the front wheel to permit steering of the front wheel. The handlebar un...

A three wheel recumbent vehicle having the steering pivot point of the front axle tilted forwardly about 8.degree. from perpendicular, causing the vehicle from the pivot point back to lean into a turn, and also having the front axle bar constructed with a low center section and end members which radiate upwardly and backwardly to provide room for the user's feet and to add stability on turns by increasing the distance between the center line of the vehicle and the point where the outboard tire t...