Post Office Railway open from 28th July
 

wrote:
On 08.06.17 13:18, tim... wrote:


"Graeme Wall" wrote in message
...
On 08/06/2017 01:02, Basil Jet wrote:

http://www.bbc.co.uk/news/uk-england-london-40189937

In the diary.

you really have to go on the first day

tim



I'll likely visit sometime in the autumn.

Has anybody here ever ridden the line in its entirety? It doesn't have
any sort of wayside signalling, does it?

Given that the original trains were unmanned, what would be the point of
wayside signalling? The trains were stopped and started by turning the
power off and on on the section of track they were travelling on.

Post Office Railway open from 28th July
 

On 08.06.17 16:55, Recliner wrote:
wrote:
On 08.06.17 13:18, tim... wrote:


"Graeme Wall" wrote in message
...
On 08/06/2017 01:02, Basil Jet wrote:

http://www.bbc.co.uk/news/uk-england-london-40189937

In the diary.

you really have to go on the first day

tim



I'll likely visit sometime in the autumn.

Has anybody here ever ridden the line in its entirety? It doesn't have
any sort of wayside signalling, does it?

Given that the original trains were unmanned, what would be the point of
wayside signalling?

There were some manned, battery-powered trains, however. If there was a
curve in the line that would obscure the line of sight and another train
were stopped beyond the curve?

Also worth noting that the trains could obtain speeds upwards of 35 miles.

The trains were stopped and started by turning the
power off and on on the section of track they were travelling on.

Did power supply from the track feed into a relay for the trains' brakes?

What would happen if another, unmanned train were on the track ahead?

Will the tentative journeys on offer run from Whitechapel all the way
out to Paddington via Mt. Pleasant, BTW?

Post Office Railway open from 28th July
 

On Thu, 8 Jun 2017 13:18:02 +0100, "tim..."
wrote:



"Graeme Wall" wrote in message
...
On 08/06/2017 01:02, Basil Jet wrote:

http://www.bbc.co.uk/news/uk-england-london-40189937

In the diary.

you really have to go on the first day

He may not have put it in the diary for the first day :-)

Post Office Railway open from 28th July
 

On 08/06/17 18:25, wrote:
Will the tentative journeys on offer run from Whitechapel all the way
out to Paddington via Mt. Pleasant, BTW?

BBC: "Two new trains, based on the originals, will carry up to 32
passengers on a 0.6 mile (1km) section of the line."

Post Office Railway open from 28th July
 

On 2017\06\08 18:25, wrote:

Will the tentative journeys on offer run from Whitechapel all the way
out to Paddington via Mt. Pleasant, BTW?

No, there are not enough emergency exit to allow anything beyond a very
short section.

Post Office Railway open from 28th July
 

"Scott" wrote in message
...
On Thu, 8 Jun 2017 13:18:02 +0100, "tim..."
wrote:



"Graeme Wall" wrote in message
...
On 08/06/2017 01:02, Basil Jet wrote:

http://www.bbc.co.uk/news/uk-england-london-40189937

In the diary.

you really have to go on the first day

He may not have put it in the diary for the first day :-)

but surely if the intention is to visit at some time in the future, you can
remember a more approximate date (August for example) without diarising it

tim

Post Office Railway open from 28th July
 

On 08/06/2017 19:15, Scott wrote:
On Thu, 8 Jun 2017 13:18:02 +0100, "tim..."
wrote:



"Graeme Wall" wrote in message
...
On 08/06/2017 01:02, Basil Jet wrote:

http://www.bbc.co.uk/news/uk-england-london-40189937

In the diary.

you really have to go on the first day

He may not have put it in the diary for the first day :-)


I'm not going but my diary is :-)

--
Graeme Wall
This account not read.

Post Office Railway open from 28th July
 

On Thu, 8 Jun 2017 19:36:31 +0100, "tim..."
wrote:



"Scott" wrote in message
.. .
On Thu, 8 Jun 2017 13:18:02 +0100, "tim..."
wrote:



"Graeme Wall" wrote in message
...
On 08/06/2017 01:02, Basil Jet wrote:

http://www.bbc.co.uk/news/uk-england-london-40189937

In the diary.

you really have to go on the first day

He may not have put it in the diary for the first day :-)

but surely if the intention is to visit at some time in the future, you can
remember a more approximate date (August for example) without diarising it

Personally, no. If I want to do something I find it best to get it
into the diary (a) to stop me arranging something else on the same day
by mistake and (b) as an incentive to make it happen. I sometimes
put TV programmes in the diary to make sure I don't forget to watch or
record.

Post Office Railway open from 28th July
 

On 08/06/2017 19:36, tim... wrote:


"Scott" wrote in message
...
On Thu, 8 Jun 2017 13:18:02 +0100, "tim..."
wrote:



"Graeme Wall" wrote in message
...
On 08/06/2017 01:02, Basil Jet wrote:

http://www.bbc.co.uk/news/uk-england-london-40189937

In the diary.

you really have to go on the first day

He may not have put it in the diary for the first day :-)

but surely if the intention is to visit at some time in the future, you
can remember a more approximate date (August for example) without
diarising it


I'm now puzzled Tim, did you mean I ought to go on the first day or why
do I have to go on the first day?


--
Graeme Wall
This account not read.

Post Office Railway open from 28th July
 

wrote:
On 08.06.17 16:55, Recliner wrote:
wrote:
On 08.06.17 13:18, tim... wrote:


"Graeme Wall" wrote in message
...
On 08/06/2017 01:02, Basil Jet wrote:

http://www.bbc.co.uk/news/uk-england-london-40189937

In the diary.

you really have to go on the first day

tim



I'll likely visit sometime in the autumn.

Has anybody here ever ridden the line in its entirety? It doesn't have
any sort of wayside signalling, does it?

Given that the original trains were unmanned, what would be the point of
wayside signalling?

There were some manned, battery-powered trains, however. If there was a
curve in the line that would obscure the line of sight and another train
were stopped beyond the curve?

I'm assuming the battery locos only ran when the automatic trains were not
running (ie, when track power was off).


Also worth noting that the trains could obtain speeds upwards of 35 miles.

The trains were stopped and started by turning the
power off and on on the section of track they were travelling on.

Did power supply from the track feed into a relay for the trains' brakes?

Not quite.

Quote:
The trains brakes are held off by electromagnets whilst its receiving power
and on the move, but when it hits a dead section of track the train brakes
are automatically applied and held on by large springs.

When the Railway was first opened, it was controlled from control panels
located in the inter-platform tunnels at the stations. These panels allowed
trains to be shunted in the station, or routed straight on to the next
station. The switch panels were mechanically and electrically interlocked.
Outside each station is a short dead section which brings each train to a
halt. If they can be admitted, the line controller could operate a
receiving lever controlling a camshaft motor which closes three relays
progressively bringing into use three different voltages to control the
trains rate of approach. The first relay energizes the dead section at
normal line voltage, 440 volts and sets the train going, the second relay
reduces the voltage to 206 volts, so slowing up the train without the use
of brakes (remember the 1 in 20 gradient) and the third relay reduces the
voltage to 150 volts which brings the train into the station at 8 miles an
hour. On entering the station, the train rides into a dead section and the
brakes are automatically applied.

1993 saw the installation of a £750,000 computer to take over control of
the system from one central point. The Vaughan computer directly interfaced
with the existing control system. The computer system was bought into
operation section by section, this allowed the system to carry on operating
as normal during the installation. Each station had its own computer,
interfaced to the existing relay system.

The computer could control the progress of each train on the system
automatically, if needed the line controller could take control of any part
of the system, and reroute trains as needed.

http://www.mailrail.co.uk/operation.html


What would happen if another, unmanned train were on the track ahead?

The battery loco presumably wouldn't have been running on track sections
occupied by service trains.


Will the tentative journeys on offer run from Whitechapel all the way
out to Paddington via Mt. Pleasant, BTW?

No, nothing like that. It's just a short demo loop.