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  2. Sprocket - Wikipedia

    en.wikipedia.org/wiki/Sprocket

    In a similar way, manually changing the sprockets on a motorcycle can change the characteristics of acceleration and top speed by modifying the final drive gear ratio. The final drive gear ratio can be calculated by dividing the number of teeth on the rear sprocket by the number of teeth on the counter-shaft sprocket.

  3. Balance shaft - Wikipedia

    en.wikipedia.org/wiki/Balance_shaft

    Balance shaft in Ford Taunus V4 engine.. Balance shafts are used in piston engines to reduce vibration by cancelling out unbalanced dynamic forces. The counter balance shafts have eccentric weights and rotate in the opposite direction to each other, which generates a net vertical force.

  4. Shaft (mechanical engineering) - Wikipedia

    en.wikipedia.org/wiki/Shaft_(mechanical_engineering)

    The following stresses are induced in the shafts.. Shear stresses due to the transmission of torque (due to torsional load).; Bending stresses (tensile or compressive) due to the forces acting upon the machine elements like gears and pulleys as well as the self weight of the shaft.

  5. Jackshaft - Wikipedia

    en.wikipedia.org/wiki/Jackshaft

    A jackshaft, also called a countershaft, is a common mechanical design component used to transfer or synchronize rotational force in a machine. A jackshaft is often just a short stub with supporting bearings on the ends and two pulleys, gears, or cranks attached to it.

  6. Manual transmission - Wikipedia

    en.wikipedia.org/wiki/Manual_transmission

    The countershaft has gears of various sizes, which are permanently meshed with the corresponding gear on the input shaft. [13] The gears on the output shaft are also permanently meshed with a corresponding gear on the countershaft; however, the output shaft gears are able to rotate independently of the output shaft itself (through the use of ...

  7. Engine balance - Wikipedia

    en.wikipedia.org/wiki/Engine_balance

    Engine balance refers to how the inertial forces produced by moving parts in an internal combustion engine or steam engine are neutralised with counterweights and balance shafts, to prevent unpleasant and potentially damaging vibration.

  8. Swingarm - Wikipedia

    en.wikipedia.org/wiki/Swingarm

    Shaft-jacking can be minimised by devices such as parallelogram swingarms. A practical way to minimise squat on a chain-drive bike is to locate the final drive sprocket as close as possible to the axis of the swingarm pivot; the ideal solution is to make the final drive sprocket and the swingarm pivot concentric, as was done on the Hesketh V1000.

  9. Harmonic damper - Wikipedia

    en.wikipedia.org/wiki/Harmonic_damper

    Harmonic balancer lower pulley on a four-cylinder engine. A harmonic damper is a device fitted to the free (accessory drive) end of the crankshaft of an internal combustion engine to counter torsional and resonance vibrations from the crankshaft.