On 17 Aug, 12:34, wrote:
On Tue, 17 Aug 2010 03:25:43 -0700 (PDT)

Andy wrote:
I read that 2009 stock is only 4cm wider that 67 stock. Are clearences
really so tight on the piccadilly that they couldn't be moved slowly via
rail over that line?

The cars are also slightly longer than the '67 stock, so the overhang
on the tight curves on the Piccadilly line is probably too much.
That's not to say that they wouldn't squeeze down the Piccadilly
tunnels running slowly, just that the time taken may be too long to
fit around the nightly engineering works.

You might have a point. Though the 73 stock on the piccadilly has very long
cars so I wouldn't have thought the overhang on the 2009 could be any greater
than those. *shrug*


Yes, but the '73 stock is narrower than both the '67 and '09 stock,
the overhand at the corners depends on both the length, the width and
the positions of the bogies on the cars.