How far could District line trains head down the heathrow branch of
the piccadilly line before they're out of gauge? Do they ever go a
short way down any more to use the test track for example?

B2003

On 2 Apr, 09:08, Boltar wrote:
How far could District line trains head down the heathrow branch of
the piccadilly line before they're out of gauge? Do they ever go a
short way down any more to use the test track for example?

Not far beyond Northfields apparently:
http://tinyurl.com/2zl65b

U

--
http://londonconnections.blogspot.com/
A blog about transport projects in London

On Apr 2, 9:08 am, Boltar wrote:
How far could District line trains head down the heathrow branch of
the piccadilly line before they're out of gauge? Do they ever go a
short way down any more to use the test track for example?

B2003

The last place they could reverse would be Hounslow Central.

There is a "Surface Stock Detector" after that would maintain the WB
Advance Starter at Danger, should the train wish to be de-roofed!

In reality, if a D Stock did accept a wrong signal at Acton Town, it
would be reversed at Northfields Depot, though if the depot can't be
used a trip to Hounslow would be needed!

On Apr 2, 10:00 am, chunky munky
wrote:
In reality, if a D Stock did accept a wrong signal at Acton Town, it
would be reversed at Northfields Depot, though if the depot can't be
used a trip to Hounslow would be needed!

Has that ever happened?

B2003

On Apr 2, 9:29 am, Mr Thant
wrote:
On 2 Apr, 09:08, Boltar wrote:

How far could District line trains head down the heathrow branch of
the piccadilly line before they're out of gauge? Do they ever go a
short way down any more to use the test track for example?

Not far beyond Northfields apparently:http://tinyurl.com/2zl65b

Oh , some bridges have been shrunk. That seems a strange thing to do ,
you'd have thought they'd have kept them at surface stock clearance
just in case. Unless rebuilding them to tube stock gauge was so much
cheaper. Can't see why it would have been though.

B2003

Boltar wrote:
On Apr 2, 9:29 am, Mr Thant
wrote:
On 2 Apr, 09:08, Boltar wrote:

How far could District line trains head down the heathrow branch of
the piccadilly line before they're out of gauge? Do they ever go a
short way down any more to use the test track for example?

Not far beyond Northfields apparently:http://tinyurl.com/2zl65b

Oh , some bridges have been shrunk. That seems a strange thing to do ,
you'd have thought they'd have kept them at surface stock clearance
just in case. Unless rebuilding them to tube stock gauge was so much
cheaper. Can't see why it would have been though.

Both the bridges mentioned (Kingsley Road and Lampton Road) are rail bridges
*over* a road, so the only gauge issue would be the width of the train. In
the case of Lampton Road, it's west of the crossover anyway.
--
Richard J.
(to email me, swap 'uk' and 'yon' in address)

On Apr 2, 10:24 am, Boltar wrote:
On Apr 2, 10:00 am, chunky munky
wrote:

In reality, if a D Stock did accept a wrong signal at Acton Town, it
would be reversed at Northfields Depot, though if the depot can't be
used a trip to Hounslow would be needed!

Has that ever happened?

B2003

Not recently. I don't know when the last time was. In reality, if the
D Stock could not reverse via the depot, due to a possesion (most
likely reason) then they would keep it in the local platform until the
depot could be used.