On May 19, 7:58*am, "DW downunder" noname wrote:
"Barry Salter" wrote in message

...





1506 wrote:

There might be some merit in linking the Met. and the Chiltern Network
north of the Marylebone throat where the Met surfaces to cross the
Regents Canal. *In theory that would allow the Amersham fasts to avoid
al of those Met Line bottlenecks. *OTOH it would be a flat crossing.

There's barely enough capacity at Marylebone with the existing Chiltern
and WSMR services, let alone trying to squeeze in an extra four Met trains
an hour.

Hint: One of the big operational constraints in Chiltern land is that it's
presently a mainly two track railway all the way from Marylebone to
Birmingham, though Evergreen 3 is designed to alleviate some of that with
strategic "through lines" at key points.

It is a pity that those empty tunnels under Lord's Cricket Ground
cannot be put to some use considering the traffic load on the Met at
that point.

If memory serves, aren't the "spare" tunnels on the wrong side of
the Chiltern line to be any use to the Met?

Cheers,

Barry

can someone enlighten me, what "spare" tunnels. AIUI, there were 2 tracks
with stations down to Baker St, and the Bakerloo (now Jubilee) replaced the
Stations, leaving 2 through tracks. Did I lose some tracks somewhere along
the way?


When the Great Central Railway was being constructed (completion
c1899) capacity for seven track was provided under Lords Cricket
ground. Two times two track tunnels and one three.

This was to enable the GC to be widened at a future date without
disturbing the hallowed turf of Lords. The tunnel currently in use
is
the one to the East, i.e. next to the Metropolitan. The unused ones
are on to the west.