#Unknown and Interesting #Facts about Railway track This is why train wheels are not perfectly cylindrical, but slightly conical. interesting Engineering.

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Unknown and Interesting Facts about Railway track   This is why train wheels are not perfectly cylindrical, but slightly conical. interesting Engineering.

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00:00The design of train wheels is genius.

00:03If we have a train track with a slight curve, and we try to roll some basic wheels across it, we'll simply derail.

00:10Okay, you might say, it's an easy fix. You could just add a flange so it doesn't derail.

00:16And while the flange does keep it from derailing, it can't really navigate a turn.

00:21This is an exaggerated version of train wheels, and of course you can see the wheels are shaped like cones.

00:28The wheels basically self-align.

00:30When the train approaches a curve, the wheels want to continue going straight.

00:35You can see we're on the small portion of this wheel, and the big portion of this wheel.

00:39Because the right wheel is smaller than the left wheel, it turns to the right.

00:43If the right wheel is bigger than the left wheel, it'll turn to the left.

00:46So what makes this design so genius?

00:49It's the fact that when the wheels want to go straight, one wheel becomes a larger wheel,

00:54and one wheel becomes a smaller wheel, forcing the wheels to automatically turn.

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