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[email protected] · May 10th 04, 12:56 PM posted to uk.transport.london

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