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  • How Train Takes A Turn?

    ISHAN TOPRE

    Member

    Updated: Oct 27, 2024
    Views: 1.2K
    How a train takes turn? Remember there is no differential mechanism in train wheels.

    The correct answer would win a like.

    Hint: The answer is not mechanical.
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Replies

  • zaveri

    Member • Aug 22, 2012

    The train moves on its tracks, and adheres to it due to magnetic attraction between the tracks and the wheels. so the tracks alone have to be in the curved shape.

    Maybe i am wrong. or has it got anything to do with swaying couple ?
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  • ISHAN TOPRE

    Member • Aug 22, 2012

    You are completely wrong.
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  • Kaustubh Katdare

    Administrator • Aug 22, 2012

    Issue
    You are completely wrong.
    #-Link-Snipped-#: A little extra politeness will help.

    Get your detailed answer here -> #-Link-Snipped-#
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  • ISHAN TOPRE

    Member • Aug 22, 2012

    Sorry sire.
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  • mechky

    Member • Aug 22, 2012

    zaveri
    The train moves on its tracks, and adheres to it due to magnetic attraction between the tracks and the wheels. so the tracks alone have to be in the curved shape.

    Maybe i am wrong. or has it got anything to do with swaying couple ?
    There is no magnetic attraction between the tracks and wheels. If that would have been the case, then imagine how much more power would get wasted due to magnetic attraction between tracks and wheels apart from usual friction loss.
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  • mechky

    Member • Aug 22, 2012

    Issue
    How a train takes turn? Remember there is no differential mechanism in train wheels.

    The correct answer would win a like.

    Hint: The answer is not mechanical.
    I guess it is because of the design of wheels as shown in image below.

    [​IMG]

    Both the wheels have flanges on one side and wheels follow the track. As the wheels approach a curve, flange of one wheel presses against the rail and prevents slipping.
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  • gohm

    Member • Aug 23, 2012

    Also, the wheels move slightly on the track so there is a slight diameter difference when taking fast turns. The bogies are flexible which also helps.
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  • white_hat

    Member • Aug 23, 2012

    It is because of the design of the wheels.Wheel tread design unlike the road cars is slanting , like it is cone shaped.While train is moving on straight path then, both the wheels are in contact with the rail in same diameter, which keeps the body centered.While taking a curve,it actually pushes to one side, so that one wheel is in contact at smaller diameter and other one at a larger diameter.This allows both wheels to turn at different speeds.This is why trains slow down while taking a curve, and that noise you hear,like a squealing noise in the railway station , while train is changing tracks.
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  • arundtelang

    Member • Aug 23, 2012

    Absolutely correct. Because of this design the radius of curvature of a track, while taking a turn is also considerably large. Sharp turn is not possible.
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  • NAVATHE SACHIN

    Member • Aug 24, 2012

    post the answer pls....
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  • Mohit Kamat

    Member • Aug 27, 2012

    what I've noticed is the latest trains have a chassis as in cars on which wheels are mounted indivisually. So each wheel is independent and turn at different speeds
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  • Kaustubh Katdare

    Administrator • Aug 27, 2012

    A similar, interesting question to discuss would be "How does Maglev train take turns?" 😀
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  • vikaskumar11233

    Member • Aug 27, 2012

    Its good to learn about the reason behind how a train turns on the track .So,the conclusion is the tires design is responsible for it.
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  • rk rao

    Member • Aug 27, 2012

    due to wheel design, and axle distance is maintained at an appropriate level. Also, we can feel in which direction the train is taking turn. Train is always slightly bend in that direction, the more longer the turn, the more bend the train would be. Comple turn might make the train falls.
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