Why Don’t Railroads Need Expansion Joints?
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How Thermite turned the clickety-clack of railroads into seamless, silent tracks. Get an exclusive 15% discount on Saily data plans! Use code veritasium at ...
  • Peppycito
    5·
    5 days ago

    TLDW: skipped through until 25:47: the rail doesnt lengthen it just extends to the tops and sides.

    That isn’t really true though. He never talked about ‘sun kink’ which is a thing. Apparently mostly due to poor ties and bedding.

    There’s a neat discussion I found on some forum

    So it appears the topic wasn’t able to be covered fully in 30 minutes, let alone 5. But I do agree he adds a lot of fluff and it gets annoying. The thermite manufacturing guy needs a channel.

    • YodaDaCoda@aussie.zoneEnglish
      21·
      5 days ago

      Yeah in Melbourne several years back we had a heat wave that fucked up a bunch of the train tracks.

      Isn’t the thunk-thunk as you’re travelling the wheels of the carriage passing over the expansion joints?.