Hi all,

There's a London-oriented email newsletter thing called London by London;
it's like Notes & Queries in structure, with people asking questions and
other people answering them. This one doesn't have an answer yet, so i
thought i'd pass it on:

"Your post reminded me to ask the LBL readership (is it really 10,000
strong?) if anyone has heard another noise made by jubilee line trains. I
can only describe the noise as the sound of running water. It's as if
you're the other side of a very thin wall and someone's just flushed the
loo in the next room. The noise seems to travel from one end of the
carriage to the other and yet no one on the carriage bats an eyelid at
this seemingly (super-) natural sound. Has anyone else heard it and do
they know what it is?"

Any suggestions?

This follows a question about the 'gear-changing noise' that comes from
the thyristors.

tom

--
I am become Life, destroyer of worlds

"Tom Anderson" wrote in message
...
Hi all,

There's a London-oriented email newsletter thing called London by London;
it's like Notes & Queries in structure, with people asking questions and
other people answering them. This one doesn't have an answer yet, so i
thought i'd pass it on:

"Your post reminded me to ask the LBL readership (is it really 10,000
strong?) if anyone has heard another noise made by jubilee line trains. I
can only describe the noise as the sound of running water. It's as if
you're the other side of a very thin wall and someone's just flushed the
loo in the next room. The noise seems to travel from one end of the
carriage to the other and yet no one on the carriage bats an eyelid at
this seemingly (super-) natural sound. Has anyone else heard it and do
they know what it is?"

It would have been more appropriate if this sound had only occurred on the
Bakerloo or Waterloo and City lines ;-)

"Martin Underwood" wrote in message ...
"Tom Anderson" wrote in message
...
Hi all,

There's a London-oriented email newsletter thing called London by London;
it's like Notes & Queries in structure, with people asking questions and
other people answering them. This one doesn't have an answer yet, so i
thought i'd pass it on:

"Your post reminded me to ask the LBL readership (is it really 10,000
strong?) if anyone has heard another noise made by jubilee line trains. I
can only describe the noise as the sound of running water. It's as if
you're the other side of a very thin wall and someone's just flushed the
loo in the next room. The noise seems to travel from one end of the
carriage to the other and yet no one on the carriage bats an eyelid at
this seemingly (super-) natural sound. Has anyone else heard it and do
they know what it is?"

It would have been more appropriate if this sound had only occurred on the
Bakerloo or Waterloo and City lines ;-)

Or the East London Line...

Tom Anderson wrote in message ...
"Your post reminded me to ask the LBL readership (is it really 10,000
strong?) if anyone has heard another noise made by jubilee line trains. I
can only describe the noise as the sound of running water. It's as if
you're the other side of a very thin wall and someone's just flushed the
loo in the next room. The noise seems to travel from one end of the
carriage to the other and yet no one on the carriage bats an eyelid at
this seemingly (super-) natural sound. Has anyone else heard it and do
they know what it is?"

Pressurised air in the brake pipes or tanks moving about?
Sound of the brake pads on rubbing on the discs?
Anything else that can produce a kind of white noise sound really

B2003

Boltar wrote:

Pressurised air in the brake pipes or tanks moving about?
Sound of the brake pads on rubbing on the discs?
Anything else that can produce a kind of white noise sound really

That's a completely different kind of sound to that described in the
subject.
--
Ian Tindale

Ian Tindale wrote in message ...
Boltar wrote:

Pressurised air in the brake pipes or tanks moving about?
Sound of the brake pads on rubbing on the discs?
Anything else that can produce a kind of white noise sound really

That's a completely different kind of sound to that described in the
subject.

The only thing I can think of from my days of driving those trains is
the noise made by the current shoes hitting the rail. For example
over a gap in the current rails, when the shoes hit the next section
of the current rail, you do get a strange sound, which may sound like
it's travelling down the train as each shoe hits the rail.

Can't say I've ever noticed it on any other stock! maybe the 96s have
different traction shoes, or the JLE may use a different type of power
rail?

Sorry, that's the only thing I can think of at the moment!

On 18 Nov 2004 00:36:40 -0800, (TheOneKEA) wrote:

"Martin Underwood" wrote in message ...
"Tom Anderson" wrote in message
...
Hi all,

There's a London-oriented email newsletter thing called London by London;
it's like Notes & Queries in structure, with people asking questions and
other people answering them. This one doesn't have an answer yet, so i
thought i'd pass it on:

"Your post reminded me to ask the LBL readership (is it really 10,000
strong?) if anyone has heard another noise made by jubilee line trains. I
can only describe the noise as the sound of running water. It's as if
you're the other side of a very thin wall and someone's just flushed the
loo in the next room. The noise seems to travel from one end of the
carriage to the other and yet no one on the carriage bats an eyelid at
this seemingly (super-) natural sound. Has anyone else heard it and do
they know what it is?"

It would have been more appropriate if this sound had only occurred on the
Bakerloo or Waterloo and City lines ;-)

Or the East London Line...


And the Northern. Twice.
--
Nick Cooper

[Carefully remove the detonators from my e-mail address to reply!]

The London Underground at War:
http://www.cwgcuser.org.uk/personal/...ra/lu/tuaw.htm
625-Online - classic British television:
http://www.625.org.uk
'Things to Come' - An Incomplete Classic:
http://www.thingstocome.org.uk

On Wed, 17 Nov 2004 16:42:17 +0000, Tom Anderson wrote:

Hi all,

There's a London-oriented email newsletter thing called London by London;
it's like Notes & Queries in structure, with people asking questions and
other people answering them. This one doesn't have an answer yet, so i
thought i'd pass it on:

"Your post reminded me to ask the LBL readership (is it really 10,000
strong?) if anyone has heard another noise made by jubilee line trains. I
can only describe the noise as the sound of running water. It's as if
you're the other side of a very thin wall and someone's just flushed the
loo in the next room. The noise seems to travel from one end of the
carriage to the other and yet no one on the carriage bats an eyelid at
this seemingly (super-) natural sound. Has anyone else heard it and do
they know what it is?"



The noise you describe is indeed running water, the 96' stock, like all
the modern stock on the underground, is fabricated from an extruded
aluminium body with a plastic inner shell that forms the interior of the
carraige. There is a space between this shell and the actual body of the
train to accommodate the air ventilation and wiring for the lights
and other systems.

On some cariages the roof has not been sealed properly and rain water has
seeped into this space, this is what you hear moving about when the train
is moving and braking.

Chris


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On Mon, 22 Nov 2004, Chris Morrison wrote:

On Wed, 17 Nov 2004 16:42:17 +0000, Tom Anderson wrote:

"Your post reminded me to ask the LBL readership (is it really 10,000
strong?) if anyone has heard another noise made by jubilee line trains. I
can only describe the noise as the sound of running water. It's as if
you're the other side of a very thin wall and someone's just flushed the
loo in the next room. The noise seems to travel from one end of the
carriage to the other and yet no one on the carriage bats an eyelid at
this seemingly (super-) natural sound. Has anyone else heard it and do
they know what it is?"

The noise you describe is indeed running water, the 96' stock, like all
the modern stock on the underground, is fabricated from an extruded
aluminium body with a plastic inner shell that forms the interior of the
carraige. There is a space between this shell and the actual body of the
train to accommodate the air ventilation and wiring for the lights and
other systems.

On some cariages the roof has not been sealed properly and rain water
has seeped into this space, this is what you hear moving about when the
train is moving and braking.

Aha! Thanks!

tom

--
REMOVE AND DESTROY

Ian Tindale wrote in message ...
Boltar wrote:

Pressurised air in the brake pipes or tanks moving about?
Sound of the brake pads on rubbing on the discs?
Anything else that can produce a kind of white noise sound really

That's a completely different kind of sound to that described in the
subject.

Not necessarily , plenty of streams sound just like white noise and so does
water coming out of a tap very fast.

B2003