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HOW IS HS2 GOING TO COPE

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galwaygreen

Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525

2016 Discovery 4 3.0 TDV6 Graphite LE Auto Loire Blue

HOW IS HS2 GOING TO COPE

normal trains in trouble today so how is the hs2 going to cope..clearly not going to be able to go super fast...

25th Jul 2019 10:44 pm

Disco_Mikey

Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20844

2005 Discovery 3 TDV6 HSE Auto Cairns Blue

£50Bn well spent

My D3 Build Thread

TDV8 Retrofit Build Thread

26th Jul 2019 6:48 am

DSL
Keeper of the wheelie bin

Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73092

And the rest.

26th Jul 2019 7:00 am

Navigator

Member Since: 17 Mar 2010
Location: Stay at Home. One of the lives you save could be your own.
Posts: 5113

2015 Discovery 4 3.0 SDV6 SE Auto Causeway Grey

Something to do with metal expanding in the heat. And rails on a railway are metal. Good old Mr I.K.Brunell didn't have a problem with that. Just left a wee gap every so often. Then someone unknown decided to weld all the rails together to stop the "clackity-clack". And overhead wires that don't have any tensioning and sag when they expand!

Strange how the Forth Bridge is build of a very large amount of similar metal and doesn't buckle and fall over in the heat. Someone knew what they were doing when it was designed and we have lost that knowlege.

Not all is lost though, I see someone is painting railway points white to reduce the amount they heat up. Going to make them difficult to find in the snow! A vaccine does not stop you catching a virus, or passing it on, or getting ill from it, really ill. It does reduce the likelyhood of you dying when really, really ill. Stay Alive - KEEP AWAY FROM PEOPLE.

26th Jul 2019 8:15 am

Aerialmark

Member Since: 21 Jun 2015
Location: Burnley (Where the M65 is cobbled)
Posts: 5192

2005 Discovery 3 TDV6 HSE Auto Zambezi Silver

Does this happen often in hot countries (Or just the ones that are hot for 2 days a year

) ? The happiest of people don't necessarily have the best of everything;
They just make the best of everything they have.

26th Jul 2019 5:48 pm

J77

Member Since: 03 Mar 2008
Location: Fife
Posts: 6270

I think they use stressed steel but over here it’s too expensive

I could be talking utter rubbish, it has been known. 23.5MY Defender 90 X-Dynamic SE D250 MHEV Pangea Green

26th Jul 2019 6:48 pm

fat bloke

Member Since: 07 Aug 2006
Location: OXFORD
Posts: 1257

2015 Discovery 4 3.0 SDV6 SE Auto Santorini Black

Use steam trains no problems

26th Jul 2019 8:29 pm

defector

Member Since: 23 Feb 2009
Location: Greater Manchester
Posts: 1471

2008 Discovery 3 TDV6 HSE Auto Zermatt Silver

It is called CWR - Continuously Welded Rail - and comes down on CWR trains from Cumbria in approx 300m lengths if my memory serves me correctly.
It is laid and welded (dropped welds -thermite welding) and ground down to form a continuous rail without imperfections between the 2 rails.

The rails are then 'clipped' to the sleepers, but must only be clipped at certain air temperatures which allow expansion and contraction suited to the 'normal' british seasons, therefore the clipping takes place at different temperatures in different parts of the world more suited to their range of annual tempeartures.

This system produces a markedly superior ride, can handle higher speed trains and is much quieter and less susceptible to damage and failures.
I think many people have forgotten riding on jointed rails compared to the magic carpet ride on CWR.

We had record breaking temperatures and unfortunately there are is no grey areas with the laws of physics.

27th Jul 2019 2:05 am

J77

Member Since: 03 Mar 2008
Location: Fife
Posts: 6270

https://www.networkrail.co.uk/stories/why-...n-britain/

Our rails are only designed to with stand temperatures up to 27c. 23.5MY Defender 90 X-Dynamic SE D250 MHEV Pangea Green

27th Jul 2019 6:19 am

galwaygreen

Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525

Overhead gear in trouble too

27th Jul 2019 10:39 am

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