On Sun, 14 May 2006, Colin Rosenstiel wrote:
In article ,
(Matthew P Jones) wrote:
When the designed the A stock, they built prototypes to try out new
ideas. The coaches before A stock were compartments and the A stock
was a kind of compromise between a normal underground carriage and a
compartment stock coach.
Not exactly. They converted parts of compartment stock vehicles for
trials but they weren't very close to the eventual A stock design I
don't think.
Why "S" for the new stock? The last surface` stock was "D".
Wasn't it D because it was for the District line, like the C is for the
Circle and A is, er, the Amersham service (and not, sadly, the 'Ammersmith
and City)? In which case S might be because it it's Shared by all the
Subsurface lines.
tom
--
I really don't know what any of this **** means, but it looks
impressive. -- zerolives, on YVFC