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Jim,
While the 15c.f. pony might be enough to get someone from 130feet
to the surface with a safety hang at 15feet, I prefer the extra
security of a 30cf just in case. This allows me to make a comfortable,
slow ascent to the safety stop, without getting too worried about
having "just enough air." :) A full 30cf isn't all that heavy
anyway.So, given that the PONY should be sling mounted, what length of
hose is appropriate for OW applications? Anyone?
-Nathan...
______________________________ Reply Separator _________________________________
Subject: Re: Openwater Hogarthian with PONY??
Author: Jim Cobb <cobber@ci*.co*> at guardian
Date: 1/21/98 9:58 AM
>While using a pony rigged as a "stage", or redundant gas source, I assume
>that a second first stage via H valve on your primary single tank would
>be unnecesary.
Look guys, the whole hogarth idea is for decompression diving. Trying to
apply decompression gas management principles to NDC diving is a waste of
time. The only use for a pony is to give you enough air to get from the
bottom straight to your 3 min. 10' stop. A 15 cu.ft. tank is enough for
this.
If you are decompression diving, then the solution is a set of doubles,
and turn at 1/3s. This will give you enough gas for whatever situation
you might come across.
To rely on a pony for backup decom gas is as stupid as diving independent
doubles. An H valve is a halfway measure, does not measure up to doubles
with a isolator.
>
>What if a pony was not used? Should an H valve be used for a redundant
>first stage if there were only the single tank. And if so, is this
>Hogarthian without a redundant gas source?
>And if it is or not, I always feel safer with a redundant gas source
>below about 70 ft. or so even with a no deco dive. This brings me to my
>next thought; just maybe it would be better to go with a small set of
>doubles ala true Hogarthian and be done with it.
>
>I suppose either the "pony stage" or the small doubles will work. I
>guess I would appreciate any feedback as I get sick when I think of all
>the money $$$$$$$$$$$ I've waisted on stroke gear in the past, and would
>like to get it "right" this time.
>
>If not using a battery canister on the right hip, would I be better off
>using a 5' long hose instead of a 7'? I think you, George, mentioned
>using a shorter long hose in openwater. Is it a 5'?
>
>Thanks to all who have posted on the OPENWATER HOGARTHIAN issue. You
>have helped me work out some of the details. I have the DIR video and am
>trying to apply it to openwater.
>
>Mike Wells :-)
>Oregon, USA
>
>
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