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| London Transport (uk.transport.london) Discussion of all forms of transport in London. |
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#1
April 8th 09, 11:31 AM
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No full metropolitan line service this weekend - again
What is it that they are actually doing? It seems almost to be every
weekend. |
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#2
April 8th 09, 11:35 AM
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No full metropolitan line service this weekend - again
wrote in message ... What is it that they are actually doing? It seems almost to be every weekend. Rebuilding the 'sub surface railway' track and formation to mainline standards throughout, so that the S stock will ride properly when delivered. Paul S |
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#3
April 8th 09, 11:50 AM
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No full metropolitan line service this weekend - again
"Paul Scott" wrote in message ... wrote in message ... What is it that they are actually doing? It seems almost to be every weekend. Rebuilding the 'sub surface railway' track and formation to mainline standards throughout, so that the S stock will ride properly when delivered. Paul S So does that mean it will not be so bumpy? |
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#4
April 8th 09, 11:58 AM
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No full metropolitan line service this weekend - again
On Apr 8, 11:50*am, wrote: "Paul Scott" wrote: wrote: What is it that they are actually doing? It seems almost to be every weekend. Rebuilding the 'sub surface railway' track and formation to mainline standards throughout, so that the S stock will ride properly when delivered. So does that mean it will not be so bumpy? It should, yes. |
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#5
April 8th 09, 12:41 PM
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No full metropolitan line service this weekend - again
Paul Scott wrote:
Rebuilding the 'sub surface railway' track and formation to mainline standards throughout, so that the S stock will ride properly when delivered. Mainline track standards are much lower than LUL track standards: when you have a short track and lots of tiny trains, you make the track perfect and save money and space by having crap suspension on your trains, whereas NR have lots of track and few trains so they build their track out of discarded goalposts and buy proper suspension for the trains. Hence the "Buckaroo Line" where LUL trains run on NR track. But it's a bit worrying if the new trains need better track than the old ones did. |
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#6
April 8th 09, 01:16 PM
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No full metropolitan line service this weekend - again
"John Rowland" wrote in message
... Paul Scott wrote: Rebuilding the 'sub surface railway' track and formation to mainline standards throughout, so that the S stock will ride properly when delivered. Mainline track standards are much lower than LUL track standards: when you have a short track and lots of tiny trains, you make the track perfect and save money and space by having crap suspension on your trains, whereas NR have lots of track and few trains so they build their track out of discarded goalposts and buy proper suspension for the trains. Hence the "Buckaroo Line" where LUL trains run on NR track. But it's a bit worrying if the new trains need better track than the old ones did. Is it welded rail that they plan to lay down? That is, rails that do not have joints for several hundred metres. |
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#7
April 8th 09, 02:07 PM
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No full metropolitan line service this weekend - again
wrote in message ... "John Rowland" wrote in message ... Paul Scott wrote: Rebuilding the 'sub surface railway' track and formation to mainline standards throughout, so that the S stock will ride properly when delivered. Mainline track standards are much lower than LUL track standards: when you have a short track and lots of tiny trains, you make the track perfect and save money and space by having crap suspension on your trains, whereas NR have lots of track and few trains so they build their track out of discarded goalposts and buy proper suspension for the trains. Hence the "Buckaroo Line" where LUL trains run on NR track. But it's a bit worrying if the new trains need better track than the old ones did. Is it welded rail that they plan to lay down? That is, rails that do not have joints for several hundred metres. Yes - as discussed here in the past, the District renewals towards Upminster appear to use identical rail and sleepers to recent NR track renewals - the same 'mainline' firms are involved albeit in a Metronet led consortium. Eventually the whole SSR is supposed to get the same treatment... Paul S |
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#8
April 8th 09, 03:10 PM
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No full metropolitan line service this weekend - again
"Paul Scott" wrote in message
... Yes - as discussed here in the past, the District renewals towards Upminster appear to use identical rail and sleepers to recent NR track renewals - the same 'mainline' firms are involved albeit in a Metronet led consortium. Eventually the whole SSR is supposed to get the same treatment... What will the sleepers be made of? |
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#9
April 8th 09, 04:16 PM
posted to uk.transport.london
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No full metropolitan line service this weekend - again
wrote in message ... "Paul Scott" wrote in message ... Yes - as discussed here in the past, the District renewals towards Upminster appear to use identical rail and sleepers to recent NR track renewals - the same 'mainline' firms are involved albeit in a Metronet led consortium. Eventually the whole SSR is supposed to get the same treatment... What will the sleepers be made of? Concrete - obviously the fittings for the fourth rail are additional, but the same rail securing, with pandrol clips, as on the big railway... Paul S |
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#10
April 8th 09, 05:56 PM
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No full metropolitan line service this weekend - again
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