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Art
Hmm, I guess I was not clear enough. Only use your pony in emergencies.
If you are going to use your pony due to some incident occurring, you
want to do this switch before your primary is exhausted, so as to confirm
that the pony is working. Where you set this reserve can be debated but
I argue that you have already planned to be on the boat with a certain
reserve in your primary, then this is the point to switch to your pony.
So, with barring unearned incidents you should always be on the boat
with at least your primary reserve and your pony untouched.
David Shimell
Project Manager, Sequent Computer Systems Ltd, Weybridge, UK
Email: shimell@se*.co*
----------
From: Paltz, Art[SMTP:Art.Paltz@R2*.CO*]
Sent: 26 January 1998 11:17
To: 'Jim Cobb'; David Shimell (shimell)
Cc: Tech Diver
Subject: RE: Pony Bottles
I agree, scares me too!! I won't debate the usefulness of Ponies as I
have my own opinion and don't wish to throw it into the mix. I thought
the practice you were referring to was only done with doubles? The idea
of breathing off the pony when not in an emergency scares the hell out
of me. I guess you guys get it filled each time when you re-fill your
mains?
Safe diving,
Art.
art.paltz@r2*.co*
Last Dive 1/10/98, Klondike Rocks (lobster dive),
NJ 75ft/65 min bottom time, 43 degrees F, 40% bottom mix.
Damn Weather! And we were doing so well for a while there!!
-----Original Message-----
From: Jim Cobb [SMTP:cobber@ci*.co*]
Sent: Monday, January 26, 1998 9:42 AM
To: David Shimell (shimell)
Cc: Tech Diver
Subject: RE: Pony Bottles
David-
You are basically describing diving with independant doubles, a
horrifying practice which is still championed by you Brits and
other
Europeans.
But I understand that a Hogarth revolution is taking place over
there,
much to the dismay of the ID (stroke) crowd. I hope you all
don't get
stuck on tradition over there.
By the way, what you describe below scares the bejeezus out of
me. Are
you sure you worded this correctly?
Jim
On 1/26/98 7:50 AM David Shimell (shimell) wrote:
>BSAC train the following practice. Breath your primary supply
down to
>the reserve level (i.e. the pressure at which you planned to be
back on
>the boat), then switch to the backup supply (pony in this
case). This
>ensures that the reserve in your primary remains intact at this
point and
>that the correct functioning of the pony is confirmed.
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