On Thu, 05 Jul 2007 06:31:25 -0700, Boltar
wrote:

On 5 Jul, 14:09, "Recliner" wrote:
Am I right in thinking that 1992 stock has smaller wheels than other
Tube trains and is perhaps more likely to derail when it encounters
something on the track?

It does seem strange that a heavy train could become derailed by
something light enough to have become dislodged by vibration or air
movements and apparently flap around in the wind.

Maybe, but a train has considerable forward momentum so wouldn't take
too much to derail if the obstruction was in exactly the right (or
wrong, perhaps) position.

On Jul 5, 4:23 pm, Ken Wheatley wrote:
On Thu, 05 Jul 2007 06:31:25 -0700, Boltar
wrote:

On 5 Jul, 14:09, "Recliner" wrote:
Am I right in thinking that 1992 stock has smaller wheels than other
Tube trains and is perhaps more likely to derail when it encounters
something on the track?

It does seem strange that a heavy train could become derailed by
something light enough to have become dislodged by vibration or air
movements and apparently flap around in the wind.

Maybe, but a train has considerable forward momentum so wouldn't take
too much to derail if the obstruction was in exactly the right (or
wrong, perhaps) position.

Exactly.One of the last derailments was a train at Ryneers lane that
had its shoegear dislodged, theis then derailed it.

On Thu, 5 Jul 2007, Boltar wrote:

On 5 Jul, 14:09, "Recliner" wrote:

Am I right in thinking that 1992 stock has smaller wheels than other
Tube trains and is perhaps more likely to derail when it encounters
something on the track?

It does seem strange that a heavy train could become derailed by
something light enough to have become dislodged by vibration or air
movements and apparently flap around in the wind.

If this light flappy thing made its way onto the line, it's possible other
things did too. For instance, if there had been a pile of crowbars wrapped
in a tea-towel (or something more plausible to that effect), and that had
fallen onto the track.

tom

--
It not infrequently happens that something about the earth, about the sky,
about other elements of this world, about the motion and rotation or even
the magnitude and distances of the stars, about definite eclipses of the
sun and moon, about the passage of years and seasons, about the nature
of animals, of fruits, of stones, and of other such things, may be known
with the greatest certainty by reasoning or by experience. -- St Augustine

On Thu, 5 Jul 2007 20:19:17 +0100, Tom Anderson
wrote:

On Thu, 5 Jul 2007, Boltar wrote:

On 5 Jul, 14:09, "Recliner" wrote:

Am I right in thinking that 1992 stock has smaller wheels than other
Tube trains and is perhaps more likely to derail when it encounters
something on the track?

It does seem strange that a heavy train could become derailed by
something light enough to have become dislodged by vibration or air
movements and apparently flap around in the wind.

If this light flappy thing made its way onto the line, it's possible other
things did too. For instance, if there had been a pile of crowbars wrapped
in a tea-towel (or something more plausible to that effect), and that had
fallen onto the track.

tom


how does the underground get stock like this out of the way, I don't
think they have any shunters, do they have to bring a battery loco in
?

"Martyn Dawe" wrote in message
...


how does the underground get stock like this out of the way, I don't
think they have any shunters, do they have to bring a battery loco in
?

Several battery locos, once the incident train was re-railed.

On Jul 9, 4:37 pm, "Robin Mayes" wrote:
"Martyn Dawe" wrote in message

...



how does the underground get stock like this out of the way, I don't
think they have any shunters, do they have to bring a battery loco in
?

Several battery locos, once the incident train was re-railed.

I believe it was 5.

After the bombings in 2005, the stalled trains were moved using some
battery locos and brake vans that were found in the Museum! These
brake vans have now been repaired so that they can couple a battery
loco to Surface Stock.
Tubeline's Transplant also have a fleet of schoma diesels and various
and tampers and other engineering trains. These can operate on all
lines at any time (except the Victoria, no pax trains allowed and the
Central only if they are ATPthink ;-) )