"Rob" wrote in message ...
"Johnny Mo" wrote in message
om...
(Boltar) wrote in message
om...
Something I was wondering the other day , when the extension to Heathrow
airport was built why didn't they re-extend the district line to
Hounslow
and beyond and divert the piccadilly to ealing? Why? Because district
trains
are much bigger and so they would have been much more room for
passengers
and their luggage rather than the pokey little tube trains on the picc.
Was there a good reason for not doing this given the benefits it would
have
entailed for passengers with luggage?
B2003
No one has yet noted there are legal differences between sub-surface
stock ( district line) and tube stock (picc). To put a district train
thru a single bore tunnel would require a whole new fleet. Tube (and
WAGN class 313) need lengthwise evacuation, sub-surface stock does
not.
Johnny Mo
I think the op meant when the track and tunnels were made, why not make them
bigger and send the bigger surface stock to the airport. IIRC 313's have
doors on the front of the cab. All underground stocks have steps or ramps to
help detrain onto track level.
In response to putting two more tracks in, and like I said it would
cost money, between northfields and osterly it would involve a
widening of the viaduct and a bridge and there's space otherwise.
After that removing the cutting and having just concrete walls would
make space, then obviously some property purchasing as well. I said
that would be my preference, not that it would be possible. I
overlooked the HSE stuff as well.