Anyone know why this is not being done like in the below video?

youtube.com/watch?v=_MKcTbYDP7w

#1 I think that video is the before operation. Then come these welders after the tracks has been placed.

#1 clearly 2 different things, but what makes me wonder is.
Why do they fuse "tracks" together i thought there should be gap since metal expand due to temp difference maybe since its Sweden, but more confused than impressed.
i have this physics "joke" in mind, track from a to b is longer in summer than winter. Then they teach you thermal expansion.
But i do see benefit, since that gap makes lot of noise and more traction, when wheels hit next "track".

Sorry #1 and #2, I didn't fully review my video (merely recalled it from memory). To be more precise, I was wondering why there was such manual labor in the procedure compared to, for example, something like this (maybe lack of funds or a special alloy?):

youtube.com/watch?v=jeIowm2sVDM

#4 i d say this one is better youtube.com/watch?v=6NF_VycdtEM&t=134
I think reason why they dont use trains to repair tracks is to let track open for commercial traffic. But if you can move tool of track is faster, than drag the whole train tool back to station, so other trains can pass.
Probably have lots to do with cost efficiency, capitalism isnt about easy work its about profit.

I don't give a monkeys cuss which method they use, this video was fascinating. Fairly sure Thunders uploaded it for the Guys doing the work, rather than the work itself but that's ok lol Made me wonder if you can buy that Thermite stuff in tiny can's for repairing hairdryers.

#6 Haha...too funny!

It's a double whammy lol, yes watching guys do work like that is one factor, but I also find this kind of stuff very interesting and love videos like that where you can see how something is made, sort of like that video where they changed a wheel on a train, that I recently uploaded, even though sometimes I technically don't understand it, but still.

#3, the gap is a very old-fashioned solution. Welded track is attached to the base so well that heat expansion only changes the thickness of the beams - not length. Smoother ride and I reckon less track repairs too.

#8 i guess this railroad next to my home didnt get the memo.

#3, when long lengths of rail are welded together the rails are stressed, meaning they are pulled a specific length depending on the temperature. The length of rail to stress depends on the track geometry among other conditions. The rail is then fastened down to the sleepers to hold it. In the old days (and for lower traffic routes) fishplated rail has around a 2mm gap to allow for expansion as it's not stressed.

#4, flashbutt welding is expensive if your only needing to do a few welds, so thermite welding is cheaper. Also not always possible to get a machine to site.

thats a cool job to have...

#11 you say that but I'm sure after doing it for a few days it must be pretty damn boring

#11 you say that but I'm sure after doing it for a few days it must be pretty damn boring