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Eccentric bottom bracket on a Burley tandem bicycle held in place with two set screws. The term is also used to refer to the device often used on tandem bicycles with timing chains, single-speed bicycles with a rear disc brake or an internal-geared hub, or any bicycle with vertical dropouts and no derailleur, to allow slight repositioning, fore and aft, of a bottom bracket to properly tension ...
The cam can be seen as a device that converts rotational motion to reciprocating (or sometimes oscillating) motion. [clarification needed] [3] A common example is the camshaft of an automobile, which takes the rotary motion of the engine and converts it into the reciprocating motion necessary to operate the intake and exhaust valves of the cylinders.
The balance shaft runs off the small gear on the left (the large gear is for the camshaft, causing it to rotate at half the speed of the crankshaft). Balance shafts are often used in inline-four engines , to reduce the second-order vibration (a vertical force oscillating at twice the engine RPM ) that is inherent in the design of a typical ...
The rotor spins around its center and around the axis of the eccentric shaft in a hula hoop fashion, resulting in the rotor making one complete revolution for every three revolutions of the eccentric shaft. In the KKM engine, torque is taken off the eccentric shaft, [4] making it a much simpler design to be adopted to conventional powertrains. [5]
Self-aligning ball bearings, such as the Wingqvist bearing shown in the picture, are constructed with the inner ring and ball assembly contained within an outer ring that has a spherical raceway. This construction allows the bearing to tolerate a small angular misalignment resulting from shaft or housing deflections or improper mounting.
The input shaft drives an eccentric bearing that in turn drives the cycloidal disc in an eccentric, cycloidal motion. The perimeter of this disc is geared to a stationary ring gear and has a series of output shaft pins or rollers placed through the face of the disc. These output shaft pins directly drive the output shaft as the cycloidal disc ...
The eccentric shaft, whose position is controlled by the DME using an electric motor, rotates through a range of 225 degrees to push the intermediate arm towards, or away from, the camshaft. For lesser lift, the eccentric shaft moves the intermediate arm away from the camshaft, so that lesser of the camshaft profile is pressing on the ...
The engine has a single rotor that spins on an eccentric shaft in a peritrochoid (Mazda uses an epitrochoid) housing. [38] Since the stationary/rotor gears ratio is 2:3, the rotor rotates by 360° every three rotations of the crankshaft. The eccentric shaft runs on plain bearings, [38] which were better than rollers for heat dissipation ...