London Banter - View Single Post - Investigation under way after Tube train collision

[email protected] · May 16th 14, 02:01 AM posted to uk.transport.london

In article ,
(Aurora) wrote:

On Wed, 14 May 2014 03:59:03 -0500, wrote:

In article ,
(Aurora) wrote:

On Tue, 13 May 2014 13:48:15 -0500,
wrote:

In article ,
(Aurora) wrote:

On Tue, 13 May 2014 02:28:12 -0500, Christopher A. Lee
wrote:

On Mon, 12 May 2014 21:38:23 -0700, Aurora
wrote:

The S7 stock is some of the widest to ever operate in the UK. When
Network Rail, or their predecessors, has operated stock with new
kinetic envelope characteristics they have been known to cobble
together a gauging vehicle and move it over the intended routes
taking measurements. Is it within TfL's wit to carry out such an
exercise?

It's no wider than other LU surface stock apart from the C-stock.

"D Stock is 9' 4" wide. "S Stock" is 9' 7" wide. While the "S
Stock" is shorter, its kinetic envelope will be different. TfL have
also had problems with the "gap" at some circle line platforms.

That's because of the lower S stock floor height surely? The width
issue for D stock will be the car length and not just the width too.
What is the C stock width?

Much to my surprise C Stock is 9 ft 7 in wide. One lives and learns.

and is widest from solebar level to waist height, surely?

If your implication is that, the envelope for the S7 stock was
therefore known beforehand? I beg to differ. Other factors come into
play, the car length, how far inboard are the trucks (that would be
bogies in your parish's English) and the profile of the car ends.

Not really, just that it wasn't as different from its predecessor as implied
earlier. We have been told the main problem was that the track was out of
position anyway.

Certainly it never hurts to carefully consider the characteristics of
the route in relation to the rolling stock.

That wouldn't have helped if the testing hadn't covered the particular track
while it was out of position.

--
Colin Rosenstiel