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Date: Thu, 18 Mar 1999 04:43:20 -0500
From: Don Mason <deep6@se*.co*>
To: bdi <bdi@wh*.ne*>
CC: techdiver <techdiver@aquanaut.com>
Subject: Re: Upside down tank mounting and other convolutions
My primary concern with this is not upsetting the reg that I have still need to
access.  Although switching the 02 reg would be easier I agree from the visual
standpoint, to me it seems you could create a potential problem. You still need
both  deco regs. If one is gone you have no back up. Your back gas is now an
option why not use one of those for a fix.
The dry suit inflation (if needed you are at 70 feet and rising at this point)
could be solved just by reconnecting the hose once its on the deco tank.
I reread # 8 and I have to say that would be difficult . First I do no "real"
diving  all my diving is  ocean diving. So moving up is not a simple crawl along
a slope, its following a bouncing  a rope upward.
Instead of pre forming several tasks at once wouldn't it be easier just to stop
and sort out the problem and move on. Schedules are not that critical where a
minute or two would cause any adverse effect other that added inwater time.
Another point to add here is what if it was a two gas dive? Then the option of
the other deco reg is not there. Then you would have to switch back for stage.
Don
bdi wrote:

> At 02:24 PM 15/3/99 -0500, Craig Waldman wrote:
>
> >From: Don Mason <deep6@se*.co*>>:
>
> >> Imagine your doing a three gas dive. Your reg craps out on your deep deco
> >>mix.What to do.On your deepest deco stop,
> >> Simple remove the left post reg and install it on the stage.You still have
> >> inflation ,back gas for air breaks and you left the 02 bottle alone.
>
> Don, swaping in another stage reg (02 if necessary)
> is safer, easier, and will work under more circumstances
> and with more configurations, because:
>
> 1. You still have inflation.
> 2. You still have back-gas for air breaks.
> 3. You leave your bouyancy control system intact.
> 4. You can see what you're doing.
> 5. The change is simpler, easier and quicker.
> 6. it doesn't eliminate your drysuit inflation (if
>    you're not using argon).
> 7. If you lose a reg, you can still access your
>    back-gas for air breaks.
> 8. You can change the regs on the move - like when
>    you go to a deco gas at its MOD on the way to
>    a stop
> 9. The rest of the world dives DIN, not yoke and
>    you'd have a hard time getting a DIN reg off a
>    post behind your head,(assuming, in light of the
>    above, you'd want to).
>
> rgrds    billyw
>
> --
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