wrote:
On Tue, 01 Jan 2013 11:04:21 +0000
Paul Corfield wrote:
coming in house. The key decision will be how LUL decides to deal with
the Picc / Bakerloo and Central line upgrades and who wins that work.

I can't help thinking its a bit premature to think about upgrading the
central line. Surely the 92 stock isn't that knackered? And the ATO while
from a passengers point of view seems a bit lead boot larry with the throttle,
it does the job.

Based on their age, the 72 and 73 tube stocks are due for replacement in
the next few years, but are in good condition for the moment. The 92 stock
hasn't weathered as well, and so will be worth replacing relatively earlier
in its life. If the new articulated, air-conditioned ts lives up to its
promise when delivered in perhaps a decade, it may be worth replacing the
92 ts as well (it'll be coming up to 30 years old, and perhaps not worth a
major refurbishment). It may be a fact of life that high tech, computerised
modern trains won't have the 40+ year life of simpler, older trains; the
electronics date too quickly and become obsolete.

With the extension of the Northern line, and its possible split into two
independent lines with a more intensive service, it will also need
additional stock, and would be a candidate for the new 21st century
standard tube stock.