Re: newbie Q & A - safety devices
- From: "Douglas W \"Popeye\" Frederick" <Popeye@xxxxxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 28 Mar 2007 22:26:49 -0400
"El Stroko Guapo" <omgray@xxxxxxxxxxxxx> wrote in message
news:jZCOh.16019$PL.2005@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
P.Schuman wrote:
hi -
Our older son is with a group that has just started their OW cert class.
I went around to some of the local shops to see the equipment, etc.
A couple of things popped into my head... wonder if they have been
invented ?
#1 - underwater alarm for when your PSI/time/capacity on your gauge
has reached a pre-set threshold ?
Various regulators going back to the '50s have made an audible signal when
pressure dropped below a certain point, the most popular as a result of a
design fault that was then marketed as a "safety benefit".
Modern pressure sensing computers make all sorts of racket to wake up the
deadheads that are unable or unwilling to check their pressure gauges once
in a while.
#2 - what happens when you surface, you have drifted far away,
and the boat is at some distance.
Is there a signalling device that can be used, and attached to your BC ?
Drift divers tow a flag to mark their position. Most divers carry a
"safety sausage", a rolled-up, inflatable signal device. There are many
other inneffectual devices designed to seperate a newbie from his father's
money
#3 is there any kind of regulator that directs the bubbles away from your
face ?
This was a very minor problem with early regulators, from Guillaumet's
1839 reg through the Rouquayrol & Denayrouze reg and up to the GC47 with
which Georges Commeinhes set the open circuit SCUBA record of 174 feet off
Marseille in July, 1943.
When Gagnan modified his reg for Cousteau in the mid-1940s, he moved the
exhaust to the back-mounted reg as a temporary solution to the problems of
unequal reg and mouth pressures. As the location of the exhaust valve was
the only patentable feature of the regulator, and as Cousteau was looking
for something he could call "new", it was patented and marketed that way.
The fact that a few years later the world had gone to two stage single
hose regs proves that a few exhaust bubbles under the face is not a very
big deal. It's only rarely they're even noticed.
I put a 12" exhaust hose on my first regulator (3/8 fuel line, IMA), to
vent behind my head.
It worked pretty good.
.
- Follow-Ups:
- Re: newbie Q & A - safety devices
- From: El Stroko Guapo
- Re: newbie Q & A - safety devices
- References:
- newbie Q & A - safety devices
- From: P.Schuman
- Re: newbie Q & A - safety devices
- From: El Stroko Guapo
- newbie Q & A - safety devices
- Prev by Date: Re: newbie Q & A - safety devices
- Next by Date: Re: newbie Q & A - safety devices
- Previous by thread: Re: newbie Q & A - safety devices
- Next by thread: Re: newbie Q & A - safety devices
- Index(es):
Relevant Pages
|
