On Fri, 07 May 2021 23:35:23 +0100
Charles Ellson wrote:
On Wed, 5 May 2021 08:32:03 +0000 (UTC),
wrote:
The doors are meant to be a safety feature. I'm not sure a safety feature that

led to even more crush loading in a station would be signed off. In case
you hadn't noticed all the JLE stations have huge platform areas.

Platform doors on the Underground are part of the environmental
control of more recent tube sections; increased safety is a secondary

Rubbish.

benefit. In case you hadn't noticed, most Jubilee Line stations (tube
or surface including some stations on the Stratford extension) don't
have platform doors or unusually wide platforms.

Wow, you think there might be a connection??

On Fri, 07 May 2021 23:47:06 +0100
Charles Ellson wrote:
On Wed, 5 May 2021 08:35:13 +0000 (UTC),
wrote:

On Tue, 04 May 2021 22:33:51 +0100
Nigel Emery wrote:
than it was in the early 90s. Had we have won the body shells would
have been made in Japan

Good thing you didn't then.

site. A short test track next to our existing Fighting Vehicle test
track was planned. We didn't have a rail connection which seemed a bit
of a problem to me but at that time that was well above my pay grade!

Wasn't a problem for the 2009 stock that was idiotically made too big** to fit

on the piccadilly line

It was actually made to fit the Victoria Line.
snip

You are really full of amazing facts today.

Yes, we know that, but in doing so it has to be taken to the line by road
not rail. If they had used the extra space inside the train it might have
been worth it, but they wasted so much of it that there's no more room than
in any other stock.

On Sat, 8 May 2021 09:15:17 +0000 (UTC),
wrote:

On Fri, 07 May 2021 23:35:23 +0100
Charles Ellson wrote:
On Wed, 5 May 2021 08:32:03 +0000 (UTC),
wrote:
The doors are meant to be a safety feature. I'm not sure a safety feature that

led to even more crush loading in a station would be signed off. In case
you hadn't noticed all the JLE stations have huge platform areas.

Platform doors on the Underground are part of the environmental
control of more recent tube sections; increased safety is a secondary

Rubbish.

Rubbish yourself.
"one of the main reasons (and justifications) for having
PEDs is for ventilation although of course they do have the obvious
benefit of preventing people from falling onto the track."
https://www.whatdotheyknow.com/reque...m_screen_doors

benefit. In case you hadn't noticed, most Jubilee Line stations (tube
or surface including some stations on the Stratford extension) don't
have platform doors or unusually wide platforms.

Wow, you think there might be a connection??

On Sat, 8 May 2021 09:16:40 +0000 (UTC),
wrote:

On Fri, 07 May 2021 23:47:06 +0100
Charles Ellson wrote:
On Wed, 5 May 2021 08:35:13 +0000 (UTC),
wrote:

On Tue, 04 May 2021 22:33:51 +0100
Nigel Emery wrote:
than it was in the early 90s. Had we have won the body shells would
have been made in Japan

Good thing you didn't then.

site. A short test track next to our existing Fighting Vehicle test
track was planned. We didn't have a rail connection which seemed a bit
of a problem to me but at that time that was well above my pay grade!

Wasn't a problem for the 2009 stock that was idiotically made too big** to fit

on the piccadilly line

It was actually made to fit the Victoria Line.
snip

You are really full of amazing facts today.

Yes, we know that, but in doing so it has to be taken to the line by road
not rail. If they had used the extra space inside the train it might have
been worth it, but they wasted so much of it that there's no more room than
in any other stock.

You seem to have missed
1)The presence of a maintenance depot at Northumberland Park.
2)The use of road transport for moving stock to/from LU depots on
other Underground lines.

On Sat, 08 May 2021 10:40:53 +0100
Charles Ellson wrote:
On Sat, 8 May 2021 09:15:17 +0000 (UTC),
wrote:

On Fri, 07 May 2021 23:35:23 +0100
Charles Ellson wrote:
On Wed, 5 May 2021 08:32:03 +0000 (UTC),
wrote:
The doors are meant to be a safety feature. I'm not sure a safety feature
that

led to even more crush loading in a station would be signed off. In case
you hadn't noticed all the JLE stations have huge platform areas.

Platform doors on the Underground are part of the environmental
control of more recent tube sections; increased safety is a secondary

Rubbish.

Rubbish yourself.
"one of the main reasons (and justifications) for having
PEDs is for ventilation although of course they do have the obvious
benefit of preventing people from falling onto the track."
https://www.whatdotheyknow.com/reque...m_screen_doors

No idea what that site is , but clearly neither them nor you have ever
been on the tube. The piston effect of the train pulling and pushing air
through the tunnel provides plenty of ventilation into the station. In fact
the doors actually prevent a lot of that leaving some station platforms
uncomfortable on hot days IME when I worked at Canary Wharf particularly
London Bridge.

On Sat, 08 May 2021 10:44:17 +0100
Charles Ellson wrote:
On Sat, 8 May 2021 09:16:40 +0000 (UTC),
wrote:
Yes, we know that, but in doing so it has to be taken to the line by road
not rail. If they had used the extra space inside the train it might have
been worth it, but they wasted so much of it that there's no more room than
in any other stock.

You seem to have missed
1)The presence of a maintenance depot at Northumberland Park.

No!! Is it?? Who knew! Take a look at a map - its well south of the north
circular, never mind the M25 and on a very busy road.

2)The use of road transport for moving stock to/from LU depots on
other Underground lines.

Not always and it also prevents the stock easily being taken to Neasden
for major overhauls.

wrote:
On Sat, 08 May 2021 10:44:17 +0100
Charles Ellson wrote:
On Sat, 8 May 2021 09:16:40 +0000 (UTC),
wrote:
Yes, we know that, but in doing so it has to be taken to the line by road
not rail. If they had used the extra space inside the train it might have
been worth it, but they wasted so much of it that there's no more room than
in any other stock.

You seem to have missed
1)The presence of a maintenance depot at Northumberland Park.

No!! Is it?? Who knew! Take a look at a map - its well south of the north
circular, never mind the M25 and on a very busy road.

It's also right next to a railway line, and it would have been easy to
establish at least a temporary connection for delivering the fleet. That
would have been much easier than using the usual Ruislip connection.


2)The use of road transport for moving stock to/from LU depots on
other Underground lines.

Not always and it also prevents the stock easily being taken to Neasden
for major overhauls.

Why would Victoria line stock be taken to the Jubilee and Met lines depot
at Neasden for overhauls?

On Sat, 8 May 2021 10:26:15 +0000 (UTC),
wrote:

On Sat, 08 May 2021 10:40:53 +0100
Charles Ellson wrote:

Rubbish yourself.
"one of the main reasons (and justifications) for having
PEDs is for ventilation although of course they do have the obvious
benefit of preventing people from falling onto the track."
https://www.whatdotheyknow.com/reque...m_screen_doors

No idea what that site is

Might I suggest that you follow the link and read the documents on the
other end of it, then. It might help you stop looking like an idiot.

, but clearly neither them nor you have ever
been on the tube.

It would be a little odd if nobody from TfL had ever been on the tube.

Mark

wrote:
On Sat, 08 May 2021 10:40:53 +0100
Charles Ellson wrote:
On Sat, 8 May 2021 09:15:17 +0000 (UTC),
wrote:

Rubbish.

Rubbish yourself.
"one of the main reasons (and justifications) for having
PEDs is for ventilation although of course they do have the obvious
benefit of preventing people from falling onto the track."
https://www.whatdotheyknow.com/reque...m_screen_doors

No idea what that site is ,

It's the official site where Freedom Of Information (FOI) requests are
handled.

but clearly neither them nor you have ever
been on the tube. The piston effect of the train pulling and pushing air
through the tunnel provides plenty of ventilation into the station. In fact
the doors actually prevent a lot of that leaving some station platforms
uncomfortable on hot days IME when I worked at Canary Wharf particularly
London Bridge.


The piston effect of the trains pumps hot air around the tunnels from one
station to another, great.

If you visit very hot places like Singapore or Hong Kong you'll find that
almost every underground metro station has full-height platform edge doors
which completely isolate the air in the tunnels from the air in the
platforms. You can then have air-conditioned trains and platforms (both
nice and cool); as you step from train to platform or vv. you can feel a
layer of very hot tunnel air as you step through it (like those heaters
above shop doorways which used to be popular).

Used properly, it can be very effective.


Anna Noyd-Dryver

On Sat, 8 May 2021 10:53:50 -0000 (UTC)
Recliner wrote:
wrote:
No!! Is it?? Who knew! Take a look at a map - its well south of the north
circular, never mind the M25 and on a very busy road.

It's also right next to a railway line, and it would have been easy to
establish at least a temporary connection for delivering the fleet. That
would have been much easier than using the usual Ruislip connection.

Yes, I'm sure network rail would jump at the chance to close a track on a
main commuter line to link up to the depot in order for LU to get their
trains.

In fact there was a link once but it was removed.

Not always and it also prevents the stock easily being taken to Neasden
for major overhauls.

Why would Victoria line stock be taken to the Jubilee and Met lines depot
at Neasden for overhauls?

Neasden is (or perhaps was) where all stock got major overhauls. The other
depots don't have all the equipment.