Post by Anna Noyd-Dryver Post by firstname.lastname@example.org Post by Anna Noyd-Dryver Post by Memail@example.com
On Sat, 1 May 2021 14:23:32 -0000 (UTC)
Wouldn't the D stock have quite a bit in common with the 73TS?
D stock had rather more in common with 83ts.
The 83 stock was scrapped when some of the vehicles were only 15 years old. It
was a bloody scandal that no one seemed interested in. But as I've said
before, its easy to spend money with abandon when its not your own and comes
from ticket receipts and central government.
AIUI it was pretty much the Austin Allegro of tube stock. At what point do
you stop throwing good money after bad and admit that something wasn't very
You've never heard of the SPV-2000, I'm guessing.
I have now; Wikipedia unfortunately appears to be pretty light on detail
about what was wrong with them.
Some other sources:
There were a number of plans for their reuse, one of which was to adapt
them for the Piccadilly Line, but a number of technical problems were
encountered, not least the matter of alignment of the doors with platforms
and that the doors were of single leaf design, rather then the 73TS double
doors and that the doors were significantly slower in operation than the
When the trains were being designed, passenger levels on the tube were in
decline but levels picked up dramatically after the trains were built. The
single-leaf doors proved to be a problem for slow unloading and loading at
stations, the resulting increased dwell times causing numerous problems on
the line. There were also problems with reliability of the electrical
equipment. The 1983 Tube Stock bought with it a number of technical
innovations such as Kiepe design traction equipment, unfortunately some of
them proved to be unsuccessful.
As well as various electrical/mechanical/structural problems, one of the
reasons for the downfall of the class was the mid-carriage single-leaf
doors, clearly seen here, which extended station dwell times due to the
time it took passengers to join and alight from the carriages through the
relatively narrow door openings.