Not watched this for a long time but they had to get stuff off the 
bottom of a deep indoor pool. One team made a diving helmet thing and 
compressor - but the pool seemed very deep. It seemed awfully risky - 
anyone know how deep the pool was and how long he could use the helmet 
before bends would set in?

"Sofa - Spud"  wrote in message 
news:g48hme$a5p$1@aioe.org...
> Not watched this for a long time but they had to get stuff off the bottom 
> of a deep indoor pool. One team made a diving helmet thing and 
> compressor - but the pool seemed very deep. It seemed awfully risky - 
> anyone know how deep the pool was and how long he could use the helmet 
> before bends would set in?
>

It would have to be *very* deep for there to be a risk of the bends.

Schrodinger wrote:
> "Sofa - Spud"  wrote in message 
> news:g48hme$a5p$1@aioe.org...
>> Not watched this for a long time but they had to get stuff off the bottom 
>> of a deep indoor pool. One team made a diving helmet thing and 
>> compressor - but the pool seemed very deep. It seemed awfully risky - 
>> anyone know how deep the pool was and how long he could use the helmet 
>> before bends would set in?
>>
> 
> It would have to be *very* deep for there to be a risk of the bends.
> 
> 

How deep when not holding your breath but breathing through a tube?

"Sofa - Spud"  wrote in message 
news:g48hme$a5p$1@aioe.org...
> Not watched this for a long time but they had to get stuff off the bottom 
> of a deep indoor pool. One team made a diving helmet thing and 
> compressor - but the pool seemed very deep. It seemed awfully risky - 
> anyone know how deep the pool was and how long he could use the helmet 
> before bends would set in?

Dunno, but I wasn't that happy with the winners.

They were supposed to build something that salvaged stuff out of water, 
right? I don't think sending a bloke down there to do all the hard stuff was 
in the spirit of the brief. Why bother with the boat at all? They might as 
well operated everything from the side. I reckon he could have dived down 
with out breathing apparatus and still hooked on an air bag.

Where as the other lot actually made a machine that did the entire job.

Not happy with that episode at all.

AC

"Sofa - Spud"  wrote in message news:g48kl1$l8q$2@aioe.org...
> Schrodinger wrote:
> > "Sofa - Spud"  wrote in message
> > news:g48hme$a5p$1@aioe.org...
> >> Not watched this for a long time but they had to get stuff off the bottom
> >> of a deep indoor pool. One team made a diving helmet thing and
> >> compressor - but the pool seemed very deep.


6 metres - 18 feet. Not deep at all.

Freedivers, i.e without aqualungs regularly dive to 100 metres and more.



It seemed awfully risky -
> >> anyone know how deep the pool was and how long he could use the helmet
> >> before bends would set in?
> >>
> >
> > It would have to be *very* deep for there to be a risk of the bends.
> >
> >
>
> How deep when not holding your breath but breathing through a tube?




"The bends" is a symptom of decompression sickness which affects certain
parts of the body when the whole body is subject to pressurised air, as in
a full diving suit or working in a deep tunnel. Basically when bodily
fluids are subjected to high pressure and then rapidy depressurised
gas bubbles can form in veins etc. leading to all sorts of nasties.

As only matey's head was pressurised its likely the pressure on his
bodily fluids would have equalised themselves out at whatever depth.

The reason deep sea divers use pressurised suits is that they'd freeze
to death wearing only a wet suit and helmet below a certain depth.

Cold is the biggest killer in water, as water is such a good conductor
of heat.


michael adams

In message <g48hme$a5p$1@aioe.org>, Sofa - Spud 
 writes
>Not watched this for a long time but they had to get stuff off the 
>bottom of a deep indoor pool. One team made a diving helmet thing and 
>compressor - but the pool seemed very deep. It seemed awfully risky - 
>anyone know how deep the pool was and how long he could use the helmet 
>before bends would set in?

It was 18 feet !!   You don't get bends in a puddle like that :-)

Mind you on a serious side it did show how good air bags are at lifting 
weights from the sea bed.

-- 
Edward Cowling   "Must Go - The Gimp Just Escaped !!"

Edward Cowling London UK wrote:
> In message <g48hme$a5p$1@aioe.org>, Sofa - Spud 
>  writes
>> Not watched this for a long time but they had to get stuff off the 
>> bottom of a deep indoor pool. One team made a diving helmet thing and 
>> compressor - but the pool seemed very deep. It seemed awfully risky - 
>> anyone know how deep the pool was and how long he could use the helmet 
>> before bends would set in?
> 
> It was 18 feet !!   You don't get bends in a puddle like that :-)

It was the use of compressed air that I was unsure about - I wasn't sure 
how deep it was either - I missed the beginning, I thought it over 20ft, 
but that aside the air thing , breathing compressed air whilst at depth.

Michael Adams has covered the bends in another post.

> 
> Mind you on a serious side it did show how good air bags are at lifting 
> weights from the sea bed.
> 

Indeed!

michael adams wrote:
> "Sofa - Spud"  wrote in message news:g48kl1$l8q$2@aioe.org...
>> Schrodinger wrote:
>>> "Sofa - Spud"  wrote in message
>>> news:g48hme$a5p$1@aioe.org...
>>>> Not watched this for a long time but they had to get stuff off the bottom
>>>> of a deep indoor pool. One team made a diving helmet thing and
>>>> compressor - but the pool seemed very deep.
> 
> 
> 6 metres - 18 feet. Not deep at all.
> 
> Freedivers, i.e without aqualungs regularly dive to 100 metres and more.
> 
> 
> 
> It seemed awfully risky -
>>>> anyone know how deep the pool was and how long he could use the helmet
>>>> before bends would set in?
>>>>
>>> It would have to be *very* deep for there to be a risk of the bends.
>>>
>>>
>> How deep when not holding your breath but breathing through a tube?
> 
> 
> 
> 
> "The bends" is a symptom of decompression sickness which affects certain
> parts of the body when the whole body is subject to pressurised air, as in
> a full diving suit or working in a deep tunnel. Basically when bodily
> fluids are subjected to high pressure and then rapidy depressurised
> gas bubbles can form in veins etc. leading to all sorts of nasties.

So no problems with the pressure on the body yet the lungs breathing 
compressed air in the helmet?

> 
> As only matey's head was pressurised its likely the pressure on his
> bodily fluids would have equalised themselves out at whatever depth.
> 
> The reason deep sea divers use pressurised suits is that they'd freeze
> to death wearing only a wet suit and helmet below a certain depth.
> 
> Cold is the biggest killer in water, as water is such a good conductor
> of heat.
> 
> 
> michael adams
> 
> 
> 
> 
> 
> 
>

"Sofa - Spud"  wrote in message news:g48rg1$gh9$2@aioe.org...
> michael adams wrote:
> > "Sofa - Spud"  wrote in message
news:g48kl1$l8q$2@aioe.org...
> >> Schrodinger wrote:
> >>> "Sofa - Spud"  wrote in message
> >>> news:g48hme$a5p$1@aioe.org...
> >>>> Not watched this for a long time but they had to get stuff off the bottom
> >>>> of a deep indoor pool. One team made a diving helmet thing and
> >>>> compressor - but the pool seemed very deep.
> >
> >
> > 6 metres - 18 feet. Not deep at all.
> >
> > Freedivers, i.e without aqualungs regularly dive to 100 metres and more.
> >
> >
> >
> > It seemed awfully risky -
> >>>> anyone know how deep the pool was and how long he could use the helmet
> >>>> before bends would set in?
> >>>>
> >>> It would have to be *very* deep for there to be a risk of the bends.
> >>>
> >>>
> >> How deep when not holding your breath but breathing through a tube?
> >
> >
> >
> >
> > "The bends" is a symptom of decompression sickness which affects certain
> > parts of the body when the whole body is subject to pressurised air, as in
> > a full diving suit or working in a deep tunnel. Basically when bodily
> > fluids are subjected to high pressure and then rapidy depressurised
> > gas bubbles can form in veins etc. leading to all sorts of nasties.
>
> So no problems with the pressure on the body yet the lungs breathing
> compressed air in the helmet?


By the time the water pressure was so high as to cause him problems he'd have
probably frozen to death already.



Like another poster I wasn't too happy about the ending of this, the first one
I've seen in a couple of years.

a) Although the air bag trick was neat enough, the winning team didn't really
make a machine at all. As has been said. They just employed a diver.

b) The cannon which looked heavy enough to sink their little boat didn't
seem to be that heavy at all.

c) It was stretching it a bit that they just "happened to find " a patchable
boat, and a working compressor so easily, without which they would have been
sunk. The other team started from scratch and made everything themselves
from bits.

d) A real test would have been landing the stuff off the craft onto the
side of the pool. Not having the cannon half hanging off the back of the
boat, while one of the team touched the side at the other end.

Most unsatisfactory IMO.


michael adams

...





>
> >
> > As only matey's head was pressurised its likely the pressure on his
> > bodily fluids would have equalised themselves out at whatever depth.
> >
> > The reason deep sea divers use pressurised suits is that they'd freeze
> > to death wearing only a wet suit and helmet below a certain depth.
> >
> > Cold is the biggest killer in water, as water is such a good conductor
> > of heat.
> >
> >
> > michael adams
> >
> >
> >
> >
> >
> >
> >

In article <YYQ9k.98126$312.23594@newsfe12.ams2>, xxxx@xxxx.xxx says...
> 
> 
> Where as the other lot actually made a machine that did the entire job.
> 
> Not happy with that episode at all.
> 
> AC 
> 
> 
> 

Indeed. It was an enjoyable episode though, even if the outcome was 
iffy.

-- 
"Please be informed that Port 80 is meant only for the FTP files 
upload."
Deewna, BT Total Broadband Support

Mal F  wrote:
> Indeed. It was an enjoyable episode though, even if the outcome was 
> iffy.

An awful lot of new, clean, useful compressed air valves etc turned up
magically that were NOT obtained from the scrapheap.

OTOH, they pretty much know what the "experts" are going to do anyway as
they have to salt the scrapheap with suitable junk.  How many junk yards
will contain a convenient wetsuit?

The rules should be tightened up a lot.  For example, the expert should not
take part in the final competition once the contraption has been built.

-- 
People who need govenment to enforce their religion must not have much
faith in the power of its message.

In article ,
 Geoff Lane  wrote:

> Mal F  wrote:
> > Indeed. It was an enjoyable episode though, even if the outcome was 
> > iffy.
> 
> An awful lot of new, clean, useful compressed air valves etc turned up
> magically that were NOT obtained from the scrapheap.

Do you think they are going to let a man go in the water with anything 
other then tried and tested equipment ?

> OTOH, they pretty much know what the "experts" are going to do anyway as
> they have to salt the scrapheap with suitable junk.  How many junk yards
> will contain a convenient wetsuit?

You build what the expert says, the more involved the build the more you 
have to put your faith in the expert and their design.

> The rules should be tightened up a lot.  For example, the expert should not
> take part in the final competition once the contraption has been built.

In some cases the expert is the only person qualified to do the test, in 
this example he was the only one with diving qualifications.

-- 

Cheers, Geoff.
www.anoraks.uk.net Scrapheap Grand Champions.

"Geoff"  wrote in message
news:grt-F6C44B.09504801072008@62.red-83-42-141.dynamicip.rima-tde.net...
> In article ,
>  Geoff Lane  wrote:
>
> > Mal F  wrote:
> > > Indeed. It was an enjoyable episode though, even if the outcome was
> > > iffy.
> >
> > An awful lot of new, clean, useful compressed air valves etc turned up
> > magically that were NOT obtained from the scrapheap.
>
> Do you think they are going to let a man go in the water with anything
> other then tried and tested equipment ?

It's the other way around. If the programme hadn't provided a working compressor,
a wet suit, and a repairable boat, that team would have had to come up
with an alternative, non-diving solution. Involving an actual salvage
craft.

Providing an easily-found wet-suit, compressor and air bags in itself
provided a solution to the problem. All that team then had to do, was
get them all to work together.

What's interesting is that they appear to have arrived at the diver
solution before having discovered whether the necessary materials
were actually available to them, on site. Had they found no servicable
compressor after an hour or so of searching, then they would have
been back to square one.

Which to my mind, totally destroyed the credibility off the whole exercise.


michael adams

...







>
> Cheers, Geoff.
> www.anoraks.uk.net Scrapheap Grand Champions.

In article ,
 "michael adams"  wrote:

> "Geoff"  wrote in message
> news:grt-F6C44B.09504801072008@62.red-83-42-141.dynamicip.rima-tde.net...
> > In article ,
> >  Geoff Lane  wrote:
> >
> > > Mal F  wrote:
> > > > Indeed. It was an enjoyable episode though, even if the outcome was
> > > > iffy.
> > >
> > > An awful lot of new, clean, useful compressed air valves etc turned up
> > > magically that were NOT obtained from the scrapheap.
> >
> > Do you think they are going to let a man go in the water with anything
> > other then tried and tested equipment ?
> 
> It's the other way around. If the programme hadn't provided a working 
> compressor,
> a wet suit, and a repairable boat, that team would have had to come up
> with an alternative, non-diving solution. Involving an actual salvage
> craft.
> 

But then you would have two identical machines, something you'll never 
see on Scrapheap both teams will always have different solutions to a 
particular problem.

> Providing an easily-found wet-suit, compressor and air bags in itself
> provided a solution to the problem. All that team then had to do, was
> get them all to work together.
> 

That's the programme in a nutshell.

> What's interesting is that they appear to have arrived at the diver
> solution before having discovered whether the necessary materials
> were actually available to them, on site. Had they found no servicable
> compressor after an hour or so of searching, then they would have
> been back to square one.

The expert probably told them too much in the pub the night before, or 
he was recognised, as soon as I saw him I remembered the jesters hat and 
total lack of dignity he showed when recovering Donald Campbell's 
remains and the Bluebird.

> 
> Which to my mind, totally destroyed the credibility off the whole exercise.
> 
This is the last series of Scrapheap, they new that when making it, I 
think it shows.

-- 

Cheers, Geoff.
www.anoraks.uk.net Scrapheap Grand Champions.

Geoff  wrote:
> In some cases the expert is the only person qualified to do the test, in 
> this example he was the only one with diving qualifications.

That would be the reason for the rule.  The program is supposed to be about
the non-experts.

-- 
Clarence Darrow:I don't believe in God because I don't believe in Mother Goose.