Posted by tleemay on April 12, 2001 at 11:40:55:
In Reply to: Re: Err, umm, excuse me but, ahhh, my experience is... posted by Steve on April 11, 2001 at 20:52:17:
"Yes, why do you ask? Let me guess, you don't like
those either. Before you answer I'll let you know
that I don't yank on the thing at extreme depth to
make sure I don't pull it out of the wing."
First of all, stop guessing - that seems to be the
common thread of assumption in this response.
I don't care how you dive or how you are configured
- do what you wish. The only issue I wish to
discuss is your reason for doing what you do. I
(we) discuss it constantly over and over again,
and continue to do so. Why? Beacuse we can justify
what we do and how we do it. We (DIR) supply supportive
facts and direct experience, and we are very free
with our information.
"My point is, the solution to resolve both reg's
failing is poor and not at all doing it right.
If the airII gas shortcomings design and utilize
a small suitable regulator that is easy to use."
The expectation that both properly working and
previously well maintained regs failing requiring
is so very far removed, that it's not an issue
requiring yet a third reg with yet a third device
requiring servicing more frequently than a decent
normal reg, and yet another problem to deal
with if it should have a problem at depth - while
the other two are functioning fine. When a reg fails,
what typically happens? It fails open, as in free-
flows (excl. upstream valve regs). You can breathe
from a free flowing reg. If you are diving twins,
you isolate and abort the dive. If you are diving
a single, you breathe from the free-flower and get
to the surface.
You have two regs that work. If you need a third,
doesn't that throw another potential device failure
into the mix?
And you shouldn't be pulling on any dump valve
in my opinion anyway, regardless of the depth. The
problem is not so much of pulling out of the wing
as it is other un-detectable problems until
it's too late, like the collar compression gasket
and screw collar being loose, or tighted and
loosened over and over again during ill though out
flush and clean procedures. It's another connection
that can cause other problems. I have seen and read
accounts of such problems for years now, which does
include people pulling the hose from the bag collar.
In fact, just last month I assisted a charter in
trying to repair his Ranger because his collar broke
from under the ring. Fortunately he was able to
hand one of his weight pouches to his buddy and ascend
safely.
Remove the valve all together with a hard elbow
and dive in the proper position in the first place.
The purge button on the end of the LPIH and a dump
valve at the bottom of the wing are really the only
vents necessary.
You answered my question and placed your position
of reason on the table, that's all I was trying to
get to. I don't believe this is beating something
to death as it is so much defining the issue to
others who read these posts.
KISS & BL, don't try and re-invent the wheel and
add yet another potential problem. If you believe
that a third reg is really not doing it right,
e-mail JJ@gue.com and trey@netdoor.com and tell
them why a thrid regulator is DIR.
Besides, who wants additional drag across their
chest anyway - or are you one of those who are
convinced the laws hydro-dynamics don't apply to
them ie; displaced area squared requires energy
value cubed to overcome the displaced area with
equal efficiencies - or other words to that
effect.
Just keep the AIR2 off the LPIH and go with the
lower profile LPIH valve - or if you really
demand a third reg from a primay circuit, go with
a Shadow+ which really is lower profile than an
AIR2... but still requires additional maintenance
and offers the same potential failure.