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Hirth joint made from anodized aluminum to show the meshing of the teeth Hirth joint (disassembled) between the semi-axles of a Campagnolo Ultra-Torque crankset. Face spline joints consist of a ring of radial splines or teeth milled or ground into the end faces of two rotary components such as a drive shaft and the hub of a wheel.
A crankpin or crank pin, also known as a rod bearing journal, [1] is a mechanical device in an engine which connects the crankshaft to the connecting rod for each cylinder. It has a cylindrical surface, to allow the crankpin to rotate relative to the "big end" of the connecting rod.
The kit was scheduled to go on sale in the second half of 2021. [24] The Bolt motor is modified by removing the differential and reduction gear unit, then fitting an adapter plate and crank flange, allowing it to bolt to a conventional transmission.
Cross-section of a connecting rod, showing strap (S), gib (G), and cotter pin (C) Another view, with scale, of bicycle crank cotter. A cotter is a pin or wedge with a flat bearing surface passing through a hole to fix parts tightly together. In British usage cotter pin has the same meaning, [1] but in the U.S. it means a split pin.
The simplest solution, as used in most road car engines, is for each pair of cylinders to share a crank journal, but this reduces the size of the rod bearings and means that matching (i.e. opposite) cylinders in the different banks are slightly offset along the crankshaft axis (which creates a rocking couple). Another solution is to use master ...
When describing a crankshaft design, the number of main bearings is generally quoted, as the number of crank pins is determined by the cylinder layout. For example, the Toyota VZ V6 engine is described as having a "four bearing crankshaft" and the Jaguar XK6 straight-six engine has a "seven bearing crankshaft". [2] [3]
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