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Comment by sosuke | Hacker News Reader

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sosuke·

This damper movement video was really incredible to see https://www.youtube.com/watch?v=NYSgd1XSZXc

The small scale demos just don't do it justice.

https://www.wikiwand.com/en/Taipei_101

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Why did you link through Wikiwand? It's some annoying overlay on Wikipedia that makes the window really small? Here's the direct Wikipedia link: https://en.wikipedia.org/wiki/Taipei_101

It's actually a browser plugin to restyle^H^H^H^H^H um actually not restyle, redirect from wikipedia to same page on wikiwand? I think it looks nice but hadn't used it before... curious if sosuke has any connection to them, but it seemed more interesting when I thought it was just restyling... the redirect to their own domain is a bit weird...

Ha, no it was just a mindless copy paste.

Somewhat related. Not a skyscraper, but a container ship: https://youtu.be/NE_ri8PkihE

Impressive and unsettling.

On a smaller scale, you can see subway trains bend when going into a turn (where the outer rail will be a bit higher than the inner one)

Train bogies can rotate around their center and follow the curves, I'd be very suprised if the actual car bent.

They don't bend, they twist. In a leftward turn, the rail tilts a bit to the left. So, when entering a leftwards bend, the front right wheel moves up a bit before the back right wheel does. That causes slight torsion in the carriage.

Springs decrease the effect, but springs in railway carriages tend to be quite stiff, as the rail shouldn't have large bumps.

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