"Recliner" wrote in message
...
"David Cantrell" wrote in message
k
On Wed, Aug 12, 2009 at 10:26:30AM +0100, Recliner wrote:

True, but the new Victoria line trains are longer, faster and more
frequent, so that may account for some of the extra power.

Longer? When did the platforms get lengthened then?

The new Victoria line trains will be the longest on the LU network, until
the even longer new 8-car S stock trains enter service. Presumably they
just stop further into the tunnels.


But maybe answer the question: The '09 stock is longer than the 67 stock
because the revised ATO is setup for a higher stopping accuracy. That means
that more of the available platform is actually used, hence longer trains -
not longer platforms. [BTW, as the trains are in tunnel all the time they
carry pax, "... stop further into the tunnels ... " is a statement rather
lacking in points of reference.] Also, elimination of intermediate driving
cabs increases the total amount of space in the train made available to pax.

DW down under