Abstract: An internal combustion engine tapered push rod assembly construction is disclosed, as well as a novel method of partially making the assembly elongated body section component from tubular push rod feedstock by removing excess exterior feedstock to form the body section exterior taper rather than by known conventional radial compression of feedstock exterior material that otherwise results in an unwanted feedstock reduced internal diameter, and an unwanted increased body section wall thickness configuration.

Abstract: A V-type internal combustion engine having a pair of opposed piston cylinders positioned in the same transverse plane is provided with a pair of co-operating pistons that are connected to a singular crankshaft crankpin through a pair of co-operating connecting rods and combined sleeve-type bearings that each lie outside the piston cylinder transverse plane.

Abstract: A drive shaft vibration dampener having an outer cylindrical housing which attaches to the end of the drive shaft. An inertia disc mounts within the housing, mounting to the housing through a spherical bearing which permits rotational and radial displacement of the inertia disc relative to the housing. A cover plate encloses the internal chamber housing the inertia disc, and the internal chamber is filled with elastomeric urethane. As the drive shaft deflects radially, the inertia disc lags behind, compressing the urethane and exerting a counteracting radial force on the housing, and the rigidly attached drive shaft.

Abstract: An engine mount for reducing the transmission of vibration from the engine to the frame. A beam has slots in the ends through which mounting bolts extend to fasten the beam to the engine heads. An L-shaped bracket extends laterally away from and upwardly from the beam. A mounting frame member is sandwiched between a pair of urethane bushings, and the L-shaped bracket and a rigid plate compress the bushings around the frame member.

Abstract: A motor mount for a motorcycle includes a plate, cylindrical sleeve, and two grommets. The grommets are elastomeric and are on opposite sides of the plate. The grommets frictionally engage the sleeve which is inserted through each of the grommets and through a hole in the middle of the plate. Additional holes maybe included in the plate for further securing the motor mount to different portions of the motorcycle. The grommets may be of similar size. One side of the plate may have a cavity for allowing better wear of the grommets.

Abstract: A primary drive chain tension adjuster having a hinged arm pivotably mounted to a base, and a low friction nylon ride mounted on the upper, opposite end of the hinged arm. A spring, preferably a urethane elastomer sheet, is positioned beneath the hinged arm. When the hinged arm is pivoted downwardly, the underside of the hinged arm compresses the urethane sheet, which exerts a spring force upwardly against the hinged arm. As a chain riding across the ride slackens, the urethane sheet forces the hinged arm upwardly taking up the slack in the chain.

Abstract: A valve lifter assembly for a pushrod-operated internal combustion engine has a housing provided with a novel system of oilways which allow separate lubrication of each of two cylinders within which the tappets slide. The tappets comprise a body member, a hydraulic lifter disposed within a socket in the body member and a cap above the hydraulic lifter, the tappet being so designed that the socket on the cap which receives the lower end of the pushrod actually lies within the body member. The valve lifter assembly has a pushrod in which the threaded section of the adjusting member has a pair of flat, parallel surfaces on opposed sides thereof so that the threaded section, rather than a separate hexagonal section, can be grasped by a wrench for adjustment of the length of the pushrod.