No full metropolitan line service this weekend - again
 

What is it that they are actually doing? It seems almost to be every
weekend.

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

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?

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.

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.

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.

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

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?

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

No full metropolitan line service this weekend - again
 

In article , ()
wrote:

"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, surely?

--
Colin Rosenstiel