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[email protected] · January 11th 13, 10:16 PM posted to uk.transport.london

On 10/01/2013 22:30, 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leaf door tube stock, the 83TS which was withdrawn well before it was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?

The 83ts looked like the Tube version of a D78. Even the cabs and
controls looked very similar.

Some pictures to demonstrate this can be seen on Square Wheels.

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

Space constraints, I think. The 83TS was not a bad train from an
operational perspective, AIUI, but it was not the right train for tube
conditions.

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