# The Naked Scientists Forum

### Author Topic: Train Tracks - how trains go round corners - Kitchen Science  (Read 4134 times)

#### thedoc

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##### Train Tracks - how trains go round corners - Kitchen Science
« on: 20/03/2013 18:11:35 »
Trains often have the wheels welded to their axles, so how do they go around corners? Find out with this experiment.

Listen to the Experiment Part 1 Part 2
« Last Edit: 20/03/2013 18:11:35 by _system »

#### stustjohn

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##### Re: Train Tracks - how trains go round corners - Kitchen Science
« Reply #1 on: 16/11/2012 09:33:41 »
I remember listening to Richard Feyman explaining this and thinking to myself, 'Wow, what a simple, yet elegant, solution to a very real problem.' And then I wondered why on Earth I had never even considered the problem before (never mind its solution)! Then I wondered how many other everyday situations are similar to this: simple science (that most children could probably understand) right under our noses, but that many of us completely miss...

#### CliffordK

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##### Re: Train Tracks - how trains go round corners - Kitchen Science
« Reply #2 on: 16/11/2012 10:12:15 »
Interesting.
There are strict guidelines on how much curvature the track can have, which is likely related to the maximum amount of curvature that the wheels can easily compensate for.

#### Boogie

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##### Re: Train Tracks - how trains go round corners - Kitchen Science
« Reply #3 on: 20/11/2012 22:42:38 »
Interesting.
There are strict guidelines on how much curvature the track can have, which is likely related to the maximum amount of curvature that the wheels can easily compensate for.

This is certainly true with short bodied ore cars and such.

Modern locomotives, however,  use "trucks" mounted at both ends of the car. Each truck typically has a two sets of wheels/axles fixed in place. The trucks can turn independently with the curvature of the track allowing sharper turns and looser guidlines in track construction.

Edit : The truck is sometimes called a Bogie. Not to be confused with a Boogie.
« Last Edit: 20/11/2012 22:44:56 by Boogie »

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##### Re: Train Tracks - how trains go round corners - Kitchen Science
« Reply #3 on: 20/11/2012 22:42:38 »