You should probably watch the video. It’s informative and answers your question.
Comment on Why don't railroads need expansion joints?
YodaDaCoda@aussie.zone 5 weeks agoYeah 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?.
BangCrash@lemmy.world 5 weeks ago
flyingSock@feddit.org 5 weeks ago
Nowadays there are no thermal expansion joints, the rails are welded. Any thunk thunk left is at switches.