"Mack" wrote in message

On Jan 10, 5:41 pm, "Recliner" wrote:
"Mack" wrote in message



I'm sorry, but I'm having trouble understanding what you're saying
(at least Boltar is clear). Are you really saying that the S Stock
was designed for Tube gauge tunnels? And how would the 2009 stock be
designed based on lessons learned from the S stock, given that the
2009 stock went into service first? Both were designed at about the
same time, so it's hard to see how lessons learned from either could
help the other's design. And how would having lots of short,
non-articulated carriages facilitate open gangways or make it 'flex'
better? Surely that proposal for more, shorter carriages was also
based on them being articulated (which is why you have shorter
carriages in the first place)?

Aren't you getting mixed up with the articulated 'space train'
concept, which was indeed planned for the Victoria line before the
PPP came in and sidelined it, but which may be resurrected for the
1972 and 1973 replacement stock?

The replacement Victoria Stock, named the S Stock was developed
initially. The S stood for Space and was an early 90's project.

Yes, this was the articulated "Space train" I mentioned. It's how they'd
have managed to install open gangways in the small Tube gauge. Let's
hope we get something like it to replace the 1972, 73 and 92 stocks.


The S stock actually went through a few periods of development but
nothing came to much for the Tube version. The 09ts was less inventive
evolution of the Tube fleet rather than a revolution.

Yes, that's certainly true. In fact, from the passenger point of view, I
don't think the 2009 stock is any advance on the 1967 stock, or even of
the superbly comfortable 1938 stock. I know it has some technical
advantages, like regen brakes and more advanced ATO, but it's less
comfortable and less reliable than the stock it replaced, without
providing any extra space.

At least the S stock is air-conditioned and has open gangways, even if
it's not really much of a revolution in other ways. Even the top speed
is no more than the A stock originally could do.