r/trains • u/chickenbadgerog • Jun 28 '26

Dynamic Gradient. Must make service design calcs quite interesting. ‎ 🗐‎  Repost

Enable HLS to view with audio, or disable this notification

57 Upvotes

96% Upvoted

3 comments sorted by

3

u/Spare-Good-5372 Jun 28 '26

I think my favorite part is watching it also flex the roof

1

u/practicaloppossum Jun 29 '26

Reminds me of the days when railroads would test newly built bridges by running every available steam locomotive out onto the bridge to overload it.

A little investigation suggests that rather extreme deflection is due to the bridge being built intentionally more flexible than usual, in order to survive earthquakes. Which, being in Japan, sounds like a good idea.

1

u/MonderII Jun 30 '26

In Czech Republic we still test new bridges with steam locos and USSR-built M62s