Re: [PSUBS-MAILIST] Cylinder choice.

[Warren Greenway <opensourcesub@yahoo.com>]

Just keep in mind that O2 becomes toxic under
pressure.
CO2 and CO levels must be held to a few percent, or
you could black out or die. Go to www.dolphinscuba.com
for books that describe air supplies for divers in
detail.

Warren.

--- Pierre Poulin <pipo305@hotmail.com> wrote:
> Thanks guys.
> 
> Dan or Cartens or anybody else,
> 
> If you can breath 1 hour with the air in the sub,
> how long can you extend 
> that 1 hour with a scrubber system?
> 
> Also, in my ambient sub. If I have 1 hour air at
> 1atm, will I have 2 hour at 
> 2atm? 3 at 3atm, etc... since there is 2, 3 time the
> amount of o2 in the 
> ambient air. Will I exhale 2, 3 time more co2?
> 
> Maybe this is a good question for Herve?
> 
> By the way, I found a perfect place to first try my
> sub. It's a tank that is 
> 10 X 10 X 10 foot. The top is at floor level. I have
> acces to a fork lift to 
> raise the sub if need be, I can adjust the water
> level in the tank and the 
> water is at 30 deg C!!! Just want to share my
> happiness with you guys...
> 
> Thanks again!
> 
> 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: Sun, 23 Mar 2003 11:02:20 -0500
> >
> >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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