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  2. Tire balance - Wikipedia

    en.wikipedia.org/wiki/Tire_balance

    Tire balance is measured in factories and repair shops by two methods: with static balancers and with dynamic balancers. Tires with large unbalances are downgraded or rejected. When tires are fitted to wheels at the point of sale, they are measured again on a balancing machine , and correction weights are applied to counteract their combined ...

  3. Balance shaft - Wikipedia

    en.wikipedia.org/wiki/Balance_shaft

    The Lanchester design of balance shaft systems was refined with the Mitsubishi Astron 80, an inline-four car engine introduced in 1975. This engine was the first to locate one balance shaft higher than the other, to counteract the second order rolling couple (i.e. about the crankshaft axis) due to the torque exerted by the inertia caused by ...

  4. Driveline windup - Wikipedia

    en.wikipedia.org/wiki/Driveline_windup

    At each wheel station a bevel box drives the half shaft out to the wheel. Unlike a typical transfer box for permanent four-wheel drive , there is no differential action front-to-back. When used for equally spaced wheels (i.e. rather than cargo trucks with close-set rear axles) the front two wheels are arranged so that both steer, the rear less ...

  5. Tire rotation - Wikipedia

    en.wikipedia.org/wiki/Tire_rotation

    The differing weight placed on the tires by the front and rear axles causes uneven wear. With the majority of cars having the engine in front, the front tires typically bear more weight than the rear tires. Front-wheel drive vehicles have not only the engine but also the transaxle in front, adding to the weight difference. Moreover, additional ...

  6. Spiral bevel gear - Wikipedia

    en.wikipedia.org/wiki/Spiral_bevel_gear

    The shape of a hypoid gear is a revolved hyperboloid (that is, the pitch surface of the hypoid gear is a hyperbolic surface), whereas the shape of a spiral bevel gear is normally conical. The hypoid gear places the pinion off-axis to the crown wheel (ring gear) which allows the pinion to be larger in diameter and have more contact area. In ...

  7. Tire maintenance - Wikipedia

    en.wikipedia.org/wiki/Tire_maintenance

    Vehicles typically carry a spare tire, already mounted on a wheel rim, to be used in the event of a flat tire or blowout.Spare tires (sometimes called "doughnuts") for modern cars are smaller than regular tires (to save trunk space, weight and cost) and should not be used to drive very far before replacement with a full-size tire.

  8. 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. This device must be an interference fit to the crankshaft in order to operate in an effective ...

  9. Wheelspin - Wikipedia

    en.wikipedia.org/wiki/Wheelspin

    Wheelspin can also occur when changing gears while the vehicle is in motion, as the inertia of the engine and flywheel rotating at a higher rate than the next highest gear tries to bring the input shaft of the transmission to the same speed. This is known commonly as lift-off oversteer.

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