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  • Rotation of Crankshaft

    gowthamanbu

    Member

    Updated: Oct 25, 2024
    Views: 1.2K
    Why!! Why!! Why the crankshaft does not rotate in ccw direction? Can it be rotated in ccw direction? How?
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Replies

  • Ramani Aswath

    Member • Aug 18, 2012

    Whenever normal right hand threaded parts are involved, rotation is in the direction that will tighten the screw as otherwise some thing may get unscrewed often with hazardous consequences.
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  • zaveri

    Member • Aug 18, 2012

    bioramani
    Whenever normal right hand threaded parts are involved, rotation is in the direction that will tighten the screw as otherwise some thing may get unscrewed often with hazardous consequences.
    what screws are you talking about. i dont think there any threaded joints in the crankshaft.
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  • roon.mech

    Member • Aug 19, 2012

    gowthamanbu
    Why!! Why!! Why the crankshaft does not rotate in ccw direction? Can it be rotated in ccw direction? How?
    if you wish to switch the direction of rotation for a crankshaft with equal firing angles, you will need to re-adjust its cam timing. there are probably a lot of other things that go with it as well.
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  • Ramani Aswath

    Member • Aug 19, 2012

    zaveri
    i dont think there any threaded joints in the crankshaft.
    Not in the crank shaft. Any right threaded connection in the drive train will see the engine torque. Such a connection can work loose.
    However, many of these are by convention. The first one starts that way and others blindly follow suit.
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  • Saugata

    Member • Aug 19, 2012

    One of the reason is, when you start an engine the motor rotates the flywheel in a particular direction; generally clockwise direction and after gaining the momentum in that particular direction it continues to retain its state of motion as the engine starts.
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  • NAVATHE SACHIN

    Member • Aug 22, 2012

    I think crankshaft is connected to cam and cam is connected to vehicle tyres.If the crankshaft rotates in ccw direction then cam and vehicle tyres also rotates in ccw direction.If it is wrong correct me....
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  • zaveri

    Member • Aug 22, 2012

    N.SACHIN
    I think crankshaft is connected to cam and cam is connected to vehicle tyres.If the crankshaft rotates in ccw direction then cam and vehicle tyres also rotates in ccw direction.If it is wrong correct me....
    the crankshaft is connected to the vehicle tyres via the flywheel, clutch, gearbox, propeller shaft, and differential.

    The camshaft is a component of the engine, and it is used for actuating the valves. it is driven by the crankshaft too.
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  • mechky

    Member • Aug 22, 2012

    Saugata
    One of the reason is, when you start an engine the motor rotates the flywheel in a particular direction; generally clockwise direction and after gaining the momentum in that particular direction it continues to retain its state of motion as the engine starts.
    What does that has to do with it? What if we start the engine with crankshaft rotating in ccw direction? The flywheel will also rotate in ccw direction and won't cause any problem.
    Here we are not talking about changing the crank rotation while the engine is running.

    ramani sir's explanation is the only correct answer.
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