wrote:

On bank holiday monday I saw a full length HST trundle through Barnes station
going north. What would it have been doing on Southern region?

Presumably a diversion into Waterloo as East of Reading on the GWML has
been closed because of brdige works.
Alan.
--
To reply by e-mail, change the ' + ' to 'plus'.

On Dec 29, 10:31*am, (A.Lee) wrote:
wrote:
On bank holiday monday I saw a full length HST trundle through Barnes station
going north. What would it have been doing on Southern region?

Presumably a diversion into Waterloo as East of Reading on the GWML has
been closed because of brdige works.
Alan.
--
To reply by e-mail, change the ' + ' to 'plus'.

Sounds like a consensus - but if it was actually going north it was
forging a whole new route. Westish seems more likely.
Tim

On Wed, 29 Dec 2010 02:38:00 -0800 (PST)
TimB wrote:
On Dec 29, 10:31=A0am, (A.Lee) wrote:
wrote:
On bank holiday monday I saw a full length HST trundle through Barnes s=
tation
going north. What would it have been doing on Southern region?

Presumably a diversion into Waterloo as East of Reading on the GWML has
been closed because of brdige works.
Alan.
--
To reply by e-mail, change the ' + ' to 'plus'.

Sounds like a consensus - but if it was actually going north it was
forging a whole new route. Westish seems more likely.
Tim

Strictly speaking Barnes bridge is going north west , but I can't
figure out what sort of convoluted route would take it through the leafy
lines around Barnes to go north of the river presumably at some point to head
south of the river again. Gauging issues perhaps with the Mk3's?

B2003

d wrote on 29 December 2010 10:53:25 ...
On Wed, 29 Dec 2010 02:38:00 -0800 (PST)
wrote:
On Dec 29, 10:31=A0am, (A.Lee) wrote:
wrote:
On bank holiday monday I saw a full length HST trundle through Barnes s=
tation
going north. What would it have been doing on Southern region?

Presumably a diversion into Waterloo as East of Reading on the GWML has
been closed because of brdige works.
Alan.
--
To reply by e-mail, change the ' + ' to 'plus'.

Sounds like a consensus - but if it was actually going north it was
forging a whole new route. Westish seems more likely.
Tim

Strictly speaking Barnes bridge is going north west , but I can't
figure out what sort of convoluted route would take it through the leafy
lines around Barnes to go north of the river presumably at some point to head
south of the river again. Gauging issues perhaps with the Mk3's?

More likely to be availability of spare paths. The direct route between
Barnes and Twickenham is only twin-track and carries a mixture of
stopping and semi-fast trains, and also has two level crossings. Hence
the slow-accelerating HST is more easily fitted in on the Hounslow Loop
where there are spare paths. Steam excursions are often routed that way.
--
Richard J.
(to email me, swap 'uk' and 'yon' in address)

wrote in message
...
On Wed, 29 Dec 2010 02:38:00 -0800 (PST)

Strictly speaking Barnes bridge is going north west , but I can't
figure out what sort of convoluted route would take it through the leafy
lines around Barnes to go north of the river presumably at some point to
head
south of the river again. Gauging issues perhaps with the Mk3's?

HSTs (rather than Mk3 coaches) are only cleared into platforms 17, 18 and
19. As this is a subset of the platforms allowing Mk3 coaches, the
suspicion is that it's the power cars themselves that are the critical issue
for gauging.

Once you've decided those platforms are to be used, an approach via the
Windsor lines is apparently less disruptive to other mainline services, and
there has also been limited track capacity via Surbiton these last couple of
days due to engineering work. Lastly, the HSTs are not yet cleared on the
SW main line east of Byfleet Junction.

Paul S

On Wed, 29 Dec 2010 16:21:33 -0000, "Paul Scott"
wrote:



wrote in message
...
On Wed, 29 Dec 2010 02:38:00 -0800 (PST)

Strictly speaking Barnes bridge is going north west , but I can't
figure out what sort of convoluted route would take it through the leafy
lines around Barnes to go north of the river presumably at some point to
head
south of the river again. Gauging issues perhaps with the Mk3's?

HSTs (rather than Mk3 coaches) are only cleared into platforms 17, 18 and
19. As this is a subset of the platforms allowing Mk3 coaches, the
suspicion is that it's the power cars themselves that are the critical issue
for gauging.

Isn't it the trouble with part of the linkage on some Mk3 bogies being
liable to argue with the conductor rails at some locations ? Various
articles found via Google suggest that most but not all Western HSTs
have short swing links so if there is the odd chance (or the
certainty?) of the wrong one turning up then somebody could be
shutting the stable door before the horse bolts (or goes off bang) ?

Once you've decided those platforms are to be used, an approach via the
Windsor lines is apparently less disruptive to other mainline services, and
there has also been limited track capacity via Surbiton these last couple of
days due to engineering work. Lastly, the HSTs are not yet cleared on the
SW main line east of Byfleet Junction.

Paul S

"Charles Ellson" wrote in message
...
On Wed, 29 Dec 2010 16:21:33 -0000, "Paul Scott"
wrote:

HSTs (rather than Mk3 coaches) are only cleared into platforms 17, 18 and
19. As this is a subset of the platforms allowing Mk3 coaches, the
suspicion is that it's the power cars themselves that are the critical
issue
for gauging.

Isn't it the trouble with part of the linkage on some Mk3 bogies being
liable to argue with the conductor rails at some locations ? Various
articles found via Google suggest that most but not all Western HSTs
have short swing links so if there is the odd chance (or the
certainty?) of the wrong one turning up then somebody could be
shutting the stable door before the horse bolts (or goes off bang) ?

Diagramming the correct trains fitted with SSL bogies has to be taken as
read, surely?

I've discussed this in another forum and it has been stated there that the
main gauging problem within Waterloo is the crew access steps on the outside
of the power car bogies. There are also issues with some stations between
Staines and Reading, (not relevant to the current situation) where there is
a 5 mph speed limit for HSTs due to the same factors.

Paul

On Wed, 29 Dec 2010 16:21:33 -0000
"Paul Scott" wrote:
days due to engineering work. Lastly, the HSTs are not yet cleared on the
SW main line east of Byfleet Junction.

Given they're 35 years old now its probably a fair bet they never will be!

B2003

"Paul Scott" wrote in message
...
HSTs (rather than Mk3 coaches) are only cleared into platforms 17, 18 and
19. As this is a subset of the platforms allowing Mk3 coaches, the
suspicion is that it's the power cars themselves that are the critical
issue for gauging.

Once you've decided those platforms are to be used, an approach via the
Windsor lines is apparently less disruptive to other mainline services,
and there has also been limited track capacity via Surbiton these last
couple of days due to engineering work. Lastly, the HSTs are not yet
cleared on the SW main line east of Byfleet Junction.

Paul S

If this diversion is likely to be used again over the next few years, it
would be worth getting route clearence for HSTs along the main line through
Surbiton. Taking an hour to get to Woking instead of 25 minutes is not
funny. Even the stopper via Surbiton that departed 17 minutes later beat us
to Woking.

John

"John C" wrote in message
...


"Paul Scott" wrote in message
...
HSTs (rather than Mk3 coaches) are only cleared into platforms 17, 18 and
19. As this is a subset of the platforms allowing Mk3 coaches, the
suspicion is that it's the power cars themselves that are the critical
issue for gauging.

Once you've decided those platforms are to be used, an approach via the
Windsor lines is apparently less disruptive to other mainline services,
and there has also been limited track capacity via Surbiton these last
couple of days due to engineering work. Lastly, the HSTs are not yet
cleared on the SW main line east of Byfleet Junction.

Paul S

If this diversion is likely to be used again over the next few years, it
would be worth getting route clearence for HSTs along the main line
through Surbiton. Taking an hour to get to Woking instead of 25 minutes is
not funny. Even the stopper via Surbiton that departed 17 minutes later
beat us to Woking.

John

Two thoughts about that

1) The railway has recently begun to learn that people don't want to be
turfed off a train on to a bus or even off one train onto another. What
they haven't learned is that journey time remains relevant.
2) I don't understand the detail but apparently the HSTs need to use high
numbered platforms at Waterloo. The route being used gets them there
without having to cross the station throat (or at least somewhere between
Clapham Junction and Waterloo).