Full face masks?

Alasdair Allan wrote:

> Digger wrote:
>> S'ok Al, we can wait till you have finished abusing the dog!
>
> If I could figure out _how_ I'd been insulted I'd probably be offended,
> but that one went right over my head, maybe I'm being a bit more absent
> minded professor(ish) than usual or something...
>
> Al.

Something to do wih a beagle I suspect, and of course the general disbelief
that you had nothing to do with it...

Danny

--
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Header is false, correct is Danny at danshome dot org

On Sun, 4 Jan 2004 19:34:12 +0000 (UTC), "Nigel Hewitt"
<nigelh@REMOVETHISnigelhewitt.net> wrote:

>Jason wrote:
>> is there a specific why full face masks are not more common? esp for
>> cold water diving?
>
>Have you thought through the complications?
>
>You have a gas problem? Here's my octo... Oh...
>
>A FFM course takes you through the scenarios and the fixes
>for them but they are complex diving skills.
>
>Cold water isn't too much of a problem. We were diving at
>Stoney this weekend and I felt warm. I will admit that when we
>came out my lips were too cold to form words properly so I
>could only say 'Ank ooo' to Dave for helping me off with the
>fins on the ladder but it wasn't that bad.
>
>Contaminated water is another matter but we don't dive
>contaminated water if we can help it.

Can I throw a rebreather into the equation? I am quite attracted to
the FFM with a DSV (or whatever it is ultimately named) but I see very
few people using them. Is it a case of availability, cost or other?

One of the main things holding me back is that I am not willing to
commit the kind of money required until I have tried it out. To date,
I have been unable to find someone with this type of set up, let alone
someone willing to let me try it out.

I think it would be helpful to throw this open to discussion so I can
form a more rounded opinion.

Laz

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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First, get a huge block of marble. Then, chip away
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"Lazarus X" <lazarusx@nospam.com> wrote in message
news:9bd16fa16a0887b7fab9b065debdf5e5@news.teranew s.com...
> Can I throw a rebreather into the equation? I am quite attracted to
> the FFM with a DSV (or whatever it is ultimately named) but I see very
> few people using them. Is it a case of availability, cost or other?

CO2 deadspace... normally. I think cost comes into it, but its more about
CO2 and the implications of coming off loop (ie lose primary breathing and
potentially primary vision in one pop).

/Z

> > Can I throw a rebreather into the equation? I am quite attracted to
> > the FFM with a DSV (or whatever it is ultimately named) but I see very
> > few people using them. Is it a case of availability, cost or other?
>
> CO2 deadspace... normally. I think cost comes into it, but its more about
> CO2 and the implications of coming off loop (ie lose primary breathing and
> potentially primary vision in one pop).
>

There are a couple of ways around these issues one is a combined OC/CC
mouthpiece but to be able to use different gases you need some sort of
plugin system which increases complexity and the danger of getting something
wrong.

Kirby Morgan now have a FFM with a removable lower half so that should you
need to switch to OC you dont loose vision but just get a blast of cold
water on your face. This mask also has a flexible lower area so that the
mouth piece can be held in your mouth like a normal regulator eliminating
the dead air space issue.

On Tue, 13 Jan 2004 03:35:00 GMT, "Darren Soothill"
<darren@soothill.com> wrote:

>
>> CO2 deadspace... normally.
snip
>There are a couple of ways around these issues one is a combined OC/CC
>mouthpiece but to be able to use different gases you need some sort of
>plugin system which increases complexity and the danger of getting something
>wrong.
>
>Kirby Morgan now have a FFM with a removable lower half so that should you
>need to switch to OC you dont loose vision but just get a blast of cold
>water on your face. This mask also has a flexible lower area so that the
>mouth piece can be held in your mouth like a normal regulator eliminating
>the dead air space issue.
>
Both the Ocean Reef and the Scubapro have ports for bailout/ octopus.
The Scubapro also has a mouthpiece that can be held in the mouth
eliminating the dead air space, it is affordable too.

--
Steve Barlow