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  2. Slider-crank linkage - Wikipedia

    en.wikipedia.org/wiki/Slider-crank_linkage

    With all in-line slider-crank mechanisms, the stroke is twice the length of the crank arm. Therefore, given the stroke, the length of the crank arm can be determined. This relationship is represented as: L 2 = (ΔR 4) max ÷ 2. Once L 2 is found, the follower length (L 3) can be determined. However, because the stroke of the mechanism only ...

  3. Rotary saw - Wikipedia

    en.wikipedia.org/wiki/Rotary_saw

    A rotary reciprocating saw is a type of saw that spins a cutting implement around a rotary axis, instead of thrusting it along a linear axis. The first use of such devices was in medicine , where cutting through bone warranted the need for a saw with minimal stroke length, and a cutting action that could be implemented through depth cut rather ...

  4. Piston motion equations - Wikipedia

    en.wikipedia.org/wiki/Piston_motion_equations

    Note that for the automotive/hotrod use-case the most convenient (used by enthusiasts) unit of length for the piston-rod-crank geometry is the inch, with typical dimensions being 6" (inch) rod length and 2" (inch) crank radius. This article uses units of inch (") for position, velocity and acceleration, as shown in the graphs above.

  5. Mean piston speed - Wikipedia

    en.wikipedia.org/wiki/Mean_piston_speed

    The comparison of mean piston speed (black line) with real piston speed (color lines). Diagram shows one stroke from BDC to TDC. Revolution = 1.000 min-1, stroke = 88 mm. The connecting rod ratio l/r varies: 3 - red, 4 - green, 5,5 - blue. The mean piston speed is the average speed of the piston in a reciprocating engine. It is a function of ...

  6. Crosshead - Wikipedia

    en.wikipedia.org/wiki/Crosshead

    A crosshead as part of a reciprocating piston and slider-crank linkage mechanism. Cylindrical trunk guide Hudswell Clarke Nunlow; crosshead and two slide bars. In mechanical engineering, a crosshead [1] is a mechanical joint used as part of the slider-crank linkages of long stroke reciprocating engines (either internal combustion or steam) and reciprocating compressors [2] to eliminate ...

  7. Stroke ratio - Wikipedia

    en.wikipedia.org/wiki/Stroke_ratio

    An engine is described as oversquare or short-stroke if its cylinders have a greater bore diameter than its stroke length, giving a bore/stroke ratio greater than 1:1. An oversquare engine allows for more and larger valves in the head of the cylinder, higher possible rpm by lowering maximum piston speed, and lower crank stress due to the lower ...

  8. Reciprocating engine - Wikipedia

    en.wikipedia.org/wiki/Reciprocating_engine

    The bore/stroke ratio is the ratio of the diameter of the piston, or "bore", to the length of travel within the cylinder, or "stroke". If this is around 1 the engine is said to be "square". If it is greater than 1, i.e. the bore is larger than the stroke, it is "oversquare".

  9. Connecting rod - Wikipedia

    en.wikipedia.org/wiki/Connecting_rod

    The predecessor to the connecting length is the mechanical linkage used by Roman-era watermills. An early example of this linkage has been found at the late 3rd century Hierapolis sawmill in Roman Asia (modern Turkey) and the 6th century saw mills at Ephesus in Asia Minor (modern Turkey) and at Gerasa in Roman Syria.

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