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Old January 10th 13, 09:02 PM posted to uk.transport.london
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Default S7 Stock to Barking

On 10/01/2013 13:29, Recliner wrote:
On Thu, 10 Jan 2013 07:24:16 -0600,
wrote:

In article ,
d ()
wrote:

On Thu, 10 Jan 2013 12:35:10 +0000
Recliner wrote:
back in 2003 or earlier? And, yes, the PPP was a huge waste of money.

Agreed.

But given where we are now, wouldn't you complain even more if the D
stock wasn't replaced by the S stock in 2016, but by some other new
design of sub-surface stock in 10-15 years time?

I only use the district line once or twice a year so I don't know the
condition of the D stock, but presumably they must've been given a full
service (or whatever its called) when they were refurbished so must be
good for a few years yet. There's stopping LU just buying S stock for the
district in another 10 years other I suppose that their own idiotic
re-inventing the wheel idiology whereby they'd insist on wasting money
retendering for an entirely new design for its own sake rather than
buying a proven one.


The single leaf doors are a major design weakness of the D stock. We should
count ourselves lucky they have lasted longer than the contemporary single
leaf door tube stock, the 83TS which was withdrawn well before it was
life-expired. The two stocks had a lot of common components under the
solebar too.


I thought that the D stock was based more on the 1973 ts?



Not from what I've seen.

83TS was based on the D78.

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Old January 10th 13, 09:30 PM posted to uk.transport.london
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Default S7 Stock to Barking

" wrote:
On 10/01/2013 13:29, Recliner wrote:
On Thu, 10 Jan 2013 07:24:16 -0600,
wrote:

In article ,
d ()
wrote:

On Thu, 10 Jan 2013 12:35:10 +0000
Recliner wrote:
back in 2003 or earlier? And, yes, the PPP was a huge waste of money.

Agreed.

But given where we are now, wouldn't you complain even more if the D
stock wasn't replaced by the S stock in 2016, but by some other new
design of sub-surface stock in 10-15 years time?

I only use the district line once or twice a year so I don't know the
condition of the D stock, but presumably they must've been given a full
service (or whatever its called) when they were refurbished so must be
good for a few years yet. There's stopping LU just buying S stock for the
district in another 10 years other I suppose that their own idiotic
re-inventing the wheel idiology whereby they'd insist on wasting money
retendering for an entirely new design for its own sake rather than
buying a proven one.

The single leaf doors are a major design weakness of the D stock. We should
count ourselves lucky they have lasted longer than the contemporary single
leaf door tube stock, the 83TS which was withdrawn well before it was
life-expired. The two stocks had a lot of common components under the
solebar too.


I thought that the D stock was based more on the 1973 ts?



Not from what I've seen.

83TS was based on the D78.

Presumably both statements are true (as each of these MetCam designs would
have evolved from its predecessor) but apart from the single-leaf doors,
what else did do the D and 83 share? And why did the 83 stock fail, while
the D stock has been quite successful?
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Old January 10th 13, 09:58 PM posted to uk.transport.london
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Default S7 Stock to Barking

In message

, Recliner wrote:
And why did the 83 stock fail, while
the D stock has been quite successful?


The 83 stock was designed for the original Jubilee Line, going to
Charing Cross. The pattern of service on that line was that almost all
passengers boarded before or at Baker Street and alighted at or after
it. So, apart from Baker Street itself, there was very little conflict
of passenger flows at stations. Combine that with the large amount of
outdoors running and single leaf made sense.

Once the JLE opened, passenger flows were completely different and there
were many stations where large numbers of passengers both boarded and
alighted. A different door layout was needed.

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Old January 10th 13, 10:06 PM posted to uk.transport.london
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Default S7 Stock to Barking

"Clive D. W. Feather" wrote:
In message
, Recliner wrote:
And why did the 83 stock fail, while
the D stock has been quite successful?


The 83 stock was designed for the original Jubilee Line, going to Charing
Cross. The pattern of service on that line was that almost all passengers
boarded before or at Baker Street and alighted at or after it. So, apart
from Baker Street itself, there was very little conflict of passenger
flows at stations. Combine that with the large amount of outdoors running
and single leaf made sense.

Once the JLE opened, passenger flows were completely different and there
were many stations where large numbers of passengers both boarded and
alighted. A different door layout was needed.


But why was the stock simply scrapped, rather than cascaded to another
line, as had been suggested at the time? I thought the mechanical
reliability was a factor.


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Old January 11th 13, 12:19 AM posted to uk.transport.london
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Posts: 4,877
Default S7 Stock to Barking

In article
,
(Recliner) wrote:

" wrote:
On 10/01/2013 13:29, Recliner wrote:
On Thu, 10 Jan 2013 07:24:16 -0600,

wrote:

In article ,
d () wrote:

On Thu, 10 Jan 2013 12:35:10 +0000
Recliner wrote:
back in 2003 or earlier? And, yes, the PPP was a huge waste of
money.

Agreed.

But given where we are now, wouldn't you complain even more if the D
stock wasn't replaced by the S stock in 2016, but by some other new
design of sub-surface stock in 10-15 years time?

I only use the district line once or twice a year so I don't know the
condition of the D stock, but presumably they must've been given a
full service (or whatever its called) when they were refurbished so
must be good for a few years yet. There's stopping LU just buying S
stock for the district in another 10 years other I suppose that their
own idiotic re-inventing the wheel idiology whereby they'd insist on
wasting money retendering for an entirely new design for its own sake
rather than buying a proven one.

The single leaf doors are a major design weakness of the D stock. We
should count ourselves lucky they have lasted longer than the
contemporary single leaf door tube stock, the 83TS which was withdrawn
well before it was life-expired. The two stocks had a lot of common
components under the solebar too.

I thought that the D stock was based more on the 1973 ts?


Not from what I've seen.

83TS was based on the D78.

Presumably both statements are true (as each of these MetCam designs would
have evolved from its predecessor) but apart from the single-leaf doors,
what else did do the D and 83 share? And why did the 83 stock fail, while
the D stock has been quite successful?


I thought the wheels and bogies were common to D78 and 83TS?

--
Colin Rosenstiel
  #27   Report Post  
Old January 11th 13, 12:22 AM posted to uk.transport.london
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Posts: 2,008
Default S7 Stock to Barking

wrote:
In article
,
(Recliner) wrote:

" wrote:
On 10/01/2013 13:29, Recliner wrote:
On Thu, 10 Jan 2013 07:24:16 -0600,

wrote:

In article ,
d () wrote:

On Thu, 10 Jan 2013 12:35:10 +0000
Recliner wrote:
back in 2003 or earlier? And, yes, the PPP was a huge waste of
money.

Agreed.

But given where we are now, wouldn't you complain even more if the D
stock wasn't replaced by the S stock in 2016, but by some other new
design of sub-surface stock in 10-15 years time?

I only use the district line once or twice a year so I don't know the
condition of the D stock, but presumably they must've been given a
full service (or whatever its called) when they were refurbished so
must be good for a few years yet. There's stopping LU just buying S
stock for the district in another 10 years other I suppose that their
own idiotic re-inventing the wheel idiology whereby they'd insist on
wasting money retendering for an entirely new design for its own sake
rather than buying a proven one.

The single leaf doors are a major design weakness of the D stock. We
should count ourselves lucky they have lasted longer than the
contemporary single leaf door tube stock, the 83TS which was withdrawn
well before it was life-expired. The two stocks had a lot of common
components under the solebar too.

I thought that the D stock was based more on the 1973 ts?

Not from what I've seen.

83TS was based on the D78.

Presumably both statements are true (as each of these MetCam designs would
have evolved from its predecessor) but apart from the single-leaf doors,
what else did do the D and 83 share? And why did the 83 stock fail, while
the D stock has been quite successful?


I thought the wheels and bogies were common to D78 and 83TS?


I'm pretty sure they're common between D and 1973ts p; don't know about
83ts.
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