Re: [PSUBS-MAILIST] Cylinder choice.

["Dan H." <JMachine@adelphia.net>]

Piere,

You can't beat Carstans explanation.  He's far more experienced then I am.
I've done some research but am still in the building phase.  I'm about 2/3
done with my K-350.

It does however have a snorkel like Carstan mentioned on the conning tower
for the purpose of breathing outside air as long as possible while sealed in
the sub.  The snorkel has a float valve on the outside and a ball valve on
the inside to lock it off while submerged.

I will carry supplemental O2 and a CO2 scrubber.  I may not carry a full 72
hours supply though.  Most of my diving, if not all, will be in easy to
reach places and not to any great depths.  If that changes I will add more.

In a K-350 I am told that a planned surface and venting every hour is
advisable.  The upper limit of a person surviving is around five hours "AT
REST."  But who will actually be at REST if entangled on the bottom?

My sub also has a 2 inch flood valve to equalize pressure and allow escape
with a bail out bottle if the depth permits as a last effort.

Dan H.

----- Original Message -----
From: "Pierre Poulin" <pipo305@hotmail.com>
To: <personal_submersibles@psubs.org>
Sent: Saturday, March 22, 2003 9:41 PM
Subject: Re: [PSUBS-MAILIST] Cylinder choice.


> Hi Dan!
>
> You only breath the air that is inside the hull? With only a scrubber
> system? I presume your sub is a 1atm type. What is the time you can be
under
> water?
>
> What about the 72 hours autonomy emergency reserve?
>
> I always presumed that in 1atm sub there was a constant flow of fresh air
> comming in and a pump to blow out the excess pressure.
>
> My sub is a dry ambient. Can I breath only the air inside the hull once it
> is equalized?
>
> Thank you very much. I know those questions are very basic but I
> misunderstood them from the beginning.
>
> Pierre Poulin
>
>
>
>
> >From: "Dan H." <JMachine@adelphia.net>
> >Reply-To: personal_submersibles@psubs.org
> >To: <personal_submersibles@psubs.org>
> >Subject: Re: [PSUBS-MAILIST] Cylinder choice.
> >Date: Sat, 22 Mar 2003 19:50:54 -0500
> >
> >None for breathing air.  If you bread out of a cylinder you have to
exhale
> >within the hull, raising the internal pressure.  A small tank for
emergency
> >exit is a good idea though.  While dived, breath the air contained within
> >the sub hull itself.
> >
> >I have two SCUBA tanks for blowing ballast.  One to use and one for
> >reserve.
> >
> >Dan H.
> >
> >----- Original Message -----
> >From: "Pierre Poulin" <pipo305@hotmail.com>
> >To: <personal_submersibles@psubs.org>
> >Sent: Saturday, March 22, 2003 9:49 AM
> >Subject: [PSUBS-MAILIST] Cylinder choice.
> >
> >
> > >
> > > Hi gang!
> > >
> > > I would like to konw what kind of cylinders you are using for breating
> >air.
> > >
> > > Thanks.
> > >
> > > Pierre Poulin
> > > "the ice is melting now!"
> > >
> > >
> > >
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