In article , (Bob Watt) wrote:

On 04/05/2004 13:01, in article , "Roland
Perry"
wrote:

I'm trying to compile a list of interesting things to go see on the
"tube" on a day trip. Engineering mainly, like the crossover at the
end
of the Oxford St Bakerloo, the scale of Canary Wharf and the tunnel
out
of Bank-DLR. What others can the team suggest?

At least two locations on LU have switches which may well be unique to
LU,
inasmuch as they can be set with both blades open, when they act as
catchpoints. The locations are a) east end of Earls Court District
station,
and b) the turnback siding beyond West Hampstead (Jubilee Line). a
photograph of the latter appears on p.150 of "Principles of London
Underground Operations" by John Glover.

These can be found at various locations, usually at the exit from sidings
and where there is no space for the standard sand drag or arrestor. They
effectively put the train "on the deck" if the points aren't set and the
train carries on (the space between the running rails just gets wider and
wider until the bogie eventually drops off!).

On the Northern Line these can be found at:
Archway siding, Finchley Central south siding and Tooting Broadway siding
diagrams are on Tubeprune's web site at:

http://www.trainweb.org/tubeprune/no...20diagrams.htm

Roger

wrote:
In article , (Bob Watt) wrote:


On 04/05/2004 13:01, in article , "Roland
Perry"
wrote:


I'm trying to compile a list of interesting things to go see on the
"tube" on a day trip. Engineering mainly, like the crossover at the
end
of the Oxford St Bakerloo, the scale of Canary Wharf and the tunnel
out
of Bank-DLR. What others can the team suggest?

At least two locations on LU have switches which may well be unique to
LU,
inasmuch as they can be set with both blades open, when they act as
catchpoints. The locations are a) east end of Earls Court District
station,
and b) the turnback siding beyond West Hampstead (Jubilee Line). a
photograph of the latter appears on p.150 of "Principles of London
Underground Operations" by John Glover.


These can be found at various locations, usually at the exit from sidings
and where there is no space for the standard sand drag or arrestor. They
effectively put the train "on the deck" if the points aren't set and the
train carries on (the space between the running rails just gets wider and
wider until the bogie eventually drops off!).

On the Northern Line these can be found at:
Archway siding, Finchley Central south siding and Tooting Broadway siding
diagrams are on Tubeprune's web site at:

http://www.trainweb.org/tubeprune/no...20diagrams.htm

Roger

They can also be seen at Rayners Lane.

Brad

TheOneKEA wrote:
wrote:
In article , (Bob Watt)
wrote:


On 04/05/2004 13:01, in article ,
"Roland Perry"
wrote:


I'm trying to compile a list of interesting things to go see on the
"tube" on a day trip. Engineering mainly, like the crossover at the
end
of the Oxford St Bakerloo, the scale of Canary Wharf and the tunnel
out
of Bank-DLR. What others can the team suggest?

At least two locations on LU have switches which may well be unique
to LU,
inasmuch as they can be set with both blades open, when they act as
catchpoints. The locations are a) east end of Earls Court District
station,
and b) the turnback siding beyond West Hampstead (Jubilee Line). a
photograph of the latter appears on p.150 of "Principles of London
Underground Operations" by John Glover.


These can be found at various locations, usually at the exit from
sidings and where there is no space for the standard sand drag or
arrestor. They effectively put the train "on the deck" if the points
aren't set and the train carries on (the space between the running
rails just gets wider and wider until the bogie eventually drops
off!).

On the Northern Line these can be found at:
Archway siding, Finchley Central south siding and Tooting Broadway
siding diagrams are on Tubeprune's web site at:

http://www.trainweb.org/tubeprune/no...20diagrams.htm

Roger

They can also be seen at Rayners Lane.

Brad

See also Hammersmith siding, both ends, and Wood Lane. Probably Down Street
is simlarly equipped.

"Piccadilly Pilot" wrote in message
...
See also Hammersmith siding, both ends

Are you sure about Hammersmith? I was under the impression that not only do
both ends have full a trap-point layout, but that these are also used by
long trains reversing which can't fit between the two turnouts.

In message , Piccadilly Pilot
writes

See also Hammersmith siding, both ends, and Wood Lane. Probably Down Street
is simlarly equipped.

Now you mention it, it is.
--
Steve Fitzgerald has now left the building.
You will find him in London's Docklands, E16, UK
(please use the reply to address for email)

In article ,
(Piccadilly Pilot) wrote:

TheOneKEA wrote:
wrote:
In article , (Bob Watt)
wrote:


On 04/05/2004 13:01, in article ,
"Roland Perry"
wrote:


I'm trying to compile a list of interesting things to go see on the
"tube" on a day trip. Engineering mainly, like the crossover at the
end
of the Oxford St Bakerloo, the scale of Canary Wharf and the tunnel
out
of Bank-DLR. What others can the team suggest?

At least two locations on LU have switches which may well be unique
to LU,
inasmuch as they can be set with both blades open, when they act as
catchpoints. The locations are a) east end of Earls Court District
station,
and b) the turnback siding beyond West Hampstead (Jubilee Line). a
photograph of the latter appears on p.150 of "Principles of London
Underground Operations" by John Glover.


These can be found at various locations, usually at the exit from
sidings and where there is no space for the standard sand drag or
arrestor. They effectively put the train "on the deck" if the points
aren't set and the train carries on (the space between the running
rails just gets wider and wider until the bogie eventually drops
off!).

On the Northern Line these can be found at:
Archway siding, Finchley Central south siding and Tooting Broadway
siding diagrams are on Tubeprune's web site at:

http://www.trainweb.org/tubeprune/no...20diagrams.htm

Roger

They can also be seen at Rayners Lane.

Brad

See also Hammersmith siding, both ends, and Wood Lane. Probably Down
Street
is simlarly equipped.



Hammersmith sidings (both ends) - no
Down Street - yes
Wood Green - yes

Roger

l be unique
to LU,
inasmuch as they can be set with both blades open, when they act as
catchpoints. The locations are a) east end of Earls Court District
station,
and b) the turnback siding beyond West Hampstead (Jubilee Line). a
photograph of the latter appears on p.150 of "Principles of London
Underground Operations" by John Glover.

These can be found at various locations, usually at the exit from
sidings and where there is no space for the standard sand drag or
arrestor. They effectively put the train "on the deck" if the points
aren't set and the train carries on (the space between the running
rails just gets wider and wider until the bogie eventually drops off!).

On the Northern Line these can be found at:
Archway siding, Finchley Central south siding and Tooting Broadway
siding
diagrams are on Tubeprune's web site at:

http://www.trainweb.org/tubeprune/no...20diagrams.htm

Roger

Haven't had time to check the diagrams for the whole combine but, in
addition to any others that I've listed, they are also found at:

Willesden Green
Roger

In message , Bob Watt
writes

At least two locations on LU have switches which may well be unique to LU,
inasmuch as they can be set with both blades open, when they act as
catchpoints. The locations are a) east end of Earls Court District station,
and b) the turnback siding beyond West Hampstead (Jubilee Line). a
photograph of the latter appears on p.150 of "Principles of London
Underground Operations" by John Glover.

Rayners Lane siding does that too.
--
Steve Fitzgerald has now left the building.
You will find him in London's Docklands, E16, UK
(please use the reply to address for email)

In article , ] (Steve
Fitzgerald) wrote:

In message , Bob Watt
writes

At least two locations on LU have switches which may well be unique to
LU,
inasmuch as they can be set with both blades open, when they act as
catchpoints. The locations are a) east end of Earls Court District
station,
and b) the turnback siding beyond West Hampstead (Jubilee Line). a
photograph of the latter appears on p.150 of "Principles of London
Underground Operations" by John Glover.

Rayners Lane siding does that too.
--
Steve Fitzgerald has now left the building.
You will find him in London's Docklands, E16, UK
(please use the reply to address for email)

Are you sure that that is the same set up?
Both the controlled and Kevin Rose's diagrams shows a short stub past the
points, rather than their just being nothing

Roger

In message ,
writes
Rayners Lane siding does that too.
--
Steve Fitzgerald has now left the building.
You will find him in London's Docklands, E16, UK
(please use the reply to address for email)

Are you sure that that is the same set up?
Both the controlled and Kevin Rose's diagrams shows a short stub past
the points, rather than their just being nothing

If you're asking about Rayners, yes. I was in there today and can
definitely confirm it is two separately controlled blades. There is no
stub there.

I did check Hammersmith today on the way past and can confirm that it's
two standard points into a stub at both ends, which is defaulted to the
stub. DS was right about long trains too, I remember comments during my
training about engineering trains having to do that.
--
Steve Fitzgerald has now left the building.
You will find him in London's Docklands, E16, UK
(please use the reply to address for email)