Recliner wrote on 06 January 2012 15:59:16 ...
wrote in message

On Fri, 6 Jan 2012 15:40:45 -0000
wrote:
wrote in message
I suppose then the fact that they've managed it on the Paris Metro
who's loading gauge at 2.4m wide is even narrower than tube stock
must be down to magic then? Perhaps Harry Potter paid the engineers
a visit.

Are they articulated?

Does this look articulated?

http://en.wikipedia.org/wiki/MF_2000

Yes, I think so. The wheels are certainly right at the end of the
carriages, and appear to be on shared bogies.

Some people use "articulated" to mean permanently connected cars with a
wide interconnecting gangway, and others use the word to mean cars that
have a shared bogie. Anyone using the word on this newsgroup should
first define which definition they are using.

On the Paris Métro all the trains from 1989 onwards have interconnecting
gangways but conventional bogies. The only trains with shared bogies
are the experimental MF88 on line 7bis; the bogies proved troublesome
and were not used on later stocks. Incidentally the train referred to
as "MF2000" is now known as MF01.

I believe the overall train width on the Métro (latest trains) is about
2.45m, compared with London's subsurface Tube trains at around 2.9m and
small tube stocks at around 2.6m. That surprises me, as the latest
Paris trains feel much wider than a London deep tube. Maybe it's the
difference in height that gives that impression.

I suspect that the lack of wide gangways on 2009 stock is because
Bombardier/Metronet could meet the terms of the PPP contract without
them, and LU had no leverage under PPP to force any major design
changes. LU are certainly now pursuing more radical design options for
the replacement of 1972/73 stock, e.g. the Siemens offering described at
http://www.railwaygazette.com/nc/new...ept-train.html
--
Richard J.
(to email me, swap 'uk' and 'yon' in address)