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