From: vbra676539@aol.com
Reply-To: personal_submersibles@psubs.org
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] RE: payload
Date: Mon, 11 Dec 2006 19:24:25 -0500
Joe, What kind of tubing are you planning? I've always bent stuff to fit
the nooks and crannies, plus built split PVC clamps drilled in advance for
the tube size. This usually gives enough support, and provides some give in
the system for vibration, etc. The outside just hard mounts wherever you
like. If you are using 104s externally with 1st stages (and what could be
easier than charging at the local dive shop?) then you'll need a hose
transition for the regulator, and that will further isolate the exterior
part of the system. Shut off valves should be right on the penetrator if
possible, and then your operating valve on a panel somewhere closer to
hand. Vance
-----Original Message-----
From: joeperkel@hotmail.com
To: personal_submersibles@psubs.org
Sent: Mon, 11 Dec 2006 7:18 PM
Subject: RE: [PSUBS-MAILIST] RE: payload
Nice simple solution Stephen that eluded me until yo just metioned
it...thank you. It's the simple things can can escape you the easiest.
joe
>From: "Stephen Pearce" <sjpearceqld@bigpond.com>
>Reply-To: personal_submersibles@psubs.org
>To: <personal_submersibles@psubs.org>
>Subject: RE: [PSUBS-MAILIST] RE: payload
>Date: Tue, 12 Dec 2006 09:04:08 +1000
>
>Joe
>
>Mount the safety shutoff/ball valve on a bracket fixed to the hull so the
>bracket fatigues not the pipe work.
>
>Regards
>
>Steve P
>
>-----Original Message-----
>From: owner-personal_submersibles@psubs.org
>[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Joseph Perkel
>Sent: Monday, 11 December 2006 10:19 PM
>To: personal_submersibles@psubs.org
>Subject: RE: [PSUBS-MAILIST] RE: payload
>
>Stephen,
>
>I'm actually not worried about the valves themselves...it's my welding
and
>plumbing that would be the potential weak point. I wonder about years of
>yanking and leverage on the valve handles, corrosion....etc.
>
>I'ts just the way I think, just like my preflight inspections...most
people
>don't look at hinge pin integrity on rental aircraft.....I do! Unlikely
>that
>
>one ever breaks but, if one does......!
>
>Joe
>
> >From: "Stephen Pearce" <sjpearceqld@bigpond.com>
> >Reply-To: personal_submersibles@psubs.org
> >To: <personal_submersibles@psubs.org>
> >Subject: RE: [PSUBS-MAILIST] RE: payload
> >Date: Mon, 11 Dec 2006 16:50:09 +1000
> >
> >Joe
> >
> >If the 1st Stage Reg is a relatively modern and well maintained it
would >be
> >very unlikely the genie would get out of the bottle. Most are designed
to
> >shutoff in the event of a failure.
> >
> > If you had a ball valve between the HP through hull and the 1st stage
>reg
> >for an emergency shutoff in a free flow situation and use DIN valves to
> >connect the HP line to the 1st stage reg your system you should have
all
> >your bases covered.
> >
> >Regards
> >
> >Steve Pearce
> >
> >-----Original Message-----
> >From: owner-personal_submersibles@psubs.org
> >[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Joseph
Perkel
> >Sent: Monday, 11 December 2006 2:21 PM
> >To: personal_submersibles@psubs.org
> >Subject: RE: [PSUBS-MAILIST] RE: payload
> >
> >Stephen,
> >
> >To my mind, the 3k psi, is a very potent genie if it gets out of the
>bottle
> >uncontrolled. I would feel a bit more comfortable if my inside shutoff
> >valve, and plumbing would not be dealing with full tank pressure.
> >
> >The danger as I see it, is between the hull wall and the shut off
>valve,...
> >the weldments, plumbing walls, etc.
> >
> >Downside to the 1st stage outside, as pointed out to me is possible
>icing.
> >Here in muggyland, I'm not too worried about that and, If I recall
> >correctly
> >
> >a "freeflow" condition is only possible with the second stage, which I
> >suppose I dont need.
> >
> >In any case, this is one of those many little "detail" items to contend
> >with.
> >
> >Joe
> >
> >
> >
> > >From: "Stephen Pearce" <sjpearceqld@bigpond.com>
> > >Reply-To: personal_submersibles@psubs.org
> > >To: <personal_submersibles@psubs.org>
> > >Subject: RE: [PSUBS-MAILIST] RE: payload
> > >Date: Mon, 11 Dec 2006 12:31:53 +1000
> > >
> > >Joe
> > >
> > >Why not have your hp line penetrating the hull and the first stage
reg
> > >inside?
> > >
> > >Steve P
> > >
> > >-----Original Message-----
> > >From: owner-personal_submersibles@psubs.org
> > >[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Joseph
>Perkel
> > >Sent: Monday, 11 December 2006 12:25 PM
> > >To: personal_submersibles@psubs.org
> > >Subject: Re: [PSUBS-MAILIST] RE: payload
> > >
> > >
> > >Thanks for the input, and the refresher!
> > >
> > >The concern here for my external mounted hp tanks, is "stepping down"
>the
> > >tank pressure as it enters the hull for the valve controls, which I
>will
> > >do.
> > >
> > >Joe
> > >
> > >
> > >
> > > >From: "Paul Kreemer" <paulkreemer@gmail.com>
> > > >Reply-To: personal_submersibles@psubs.org
> > > >To: personal_submersibles@psubs.org
> > > >Subject: Re: [PSUBS-MAILIST] RE: payload
> > > >Date: Sun, 10 Dec 2006 18:04:55 -0800
> > > >
> > > >Above ambient - duh, of course! Thanks for straightening me out.
> > > >
> > > >Paul
> > > >
> > > >On 12/10/06, Stephen Pearce <sjpearceqld@bigpond.com> wrote:
> > > >>
> > > >> Paul
> > > >>
> > > >>
> > > >>
> > > >>First stage scuba regulators are designed in most cases to deliver
> > >between
> > > >>140 to 160 PSI over and above the external ambient pressure.
> > > >>
> > > >>
> > > >>
> > > >>Regards
> > > >>
> > > >>
> > > >>
> > > >>Steve P
> > > >>
> > > >>
> > > >>
> > > >>-----Original Message-----
> > > >>*From:* owner-personal_submersibles@psubs.org [mailto:
> > > >>owner-personal_submersibles@psubs.org] *On Behalf Of *Paul Kreemer
> > > >>*Sent:* Monday, 11 December 2006 7:46 AM
> > > >>*To:* personal_submersibles@psubs.org
> > > >>*Subject:* Re: [PSUBS-MAILIST] RE: payload
> > > >>
> > > >>
> > > >>
> > > >>The LP taps should give you just 140-150psi. (
> > > >>http://www.scubadiverinfo.com/2_regulators.html) That'd about
equal
> >the
> > > >>ambient pressure at 330ft. So the deep tech divers must use
>adjusted
> > > >>first
> > > >>stages to go as deep as they do. ??
> > > >>
> > > >>Paul
> > > >>
> > > >>On 12/10/06, *Joseph Perkel* <joeperkel@hotmail.com> wrote:
> > > >>
> > > >>
> > > >>"The pressure in a scuba tank is much greater than what we'll get
in
> >our
> > > >>trim tanks"
> > > >>
> > > >>.........Does a 350' rated psub use HP air directly off the tank
> >valve,
> > >or
> > > >>thru an LP port on a second stage to blow soft tanks? Someone
please
> > > >>remind
> > > >>me what psi service is in an LP port? A quick google came up
empty.
> > > >>
> > > >>Joe
> > > >>
> > > >> >From: ShellyDalg@aol.com
> > > >> >Reply-To: personal_submersibles@psubs.org
> > > >> >To: personal_submersibles@psubs.org
> > > >> >Subject: Re: [PSUBS-MAILIST] RE: payload
> > > >> >Date: Sun, 10 Dec 2006 13:26:47 EST
> > > >> >
> > > >> >NP- You are right, the psi is the same. The mechanical advantage
> >does
> > > >>apply
> > > >> >with a decrease in volume though.
> > > >> >The analogy of a square, one inch rod, pushing into the sub's
one
> > > >> >atmosphere
> > > >> >gives you a certain pressure, where as a 1/4 inch round rod ( or
> >hose
> >
> > >)
> > > >> >would push less.
> > > >> >Still, to push something out of the sub ( like ballast water)
will
> > > >>require
> > > >> >a
> > > >> >pump able to push the 267 psi.
> > > >> >Depending on the volume pumped, 267 psi is easy to achieve, and
>in
> > >the
> > > >> >case
> > > >> >of a trim tank, you're pumping air into a tank to expel the
>water.
> > > >> >I've got a small compressor in my vehicle for emergency roadside
> > >repairs
> > > >> >that pumps to 250 psi ( but at a very small volume ) that runs
on >12
> > > >> >volts.
> > > >> >The pressure in a scuba tank is much greater than what we'll get
>in
> > >our
> > > >> >trim
> > > >> >tanks.
> > > >> >Blowing out the trim ballast ( adjusting trim en route ) must be
> >part
> > >of
> > > >> >the
> > > >> >system or we'll have to surface constantly to dump the water.
> > > >> >Frank D.
> > > >> >
> > > >>
> > > >>
> > > >>
> > > >>
> > > >>
> > >
> > >
>>************************************************************************
> > >
> > >
>>************************************************************************
> > >
> > >
>>************************************************************************
> > > >>The personal submersibles mailing list complies with the US
Federal
> > > >>CAN-SPAM Act of 2003. Your email address appears in our database
> > > >>because either you, or someone you know, requested you receive
> >messages
> > > >>from our organization.
> > > >>
> > > >>If you want to be removed from this mailing list simply click on
the
> > > >>link below or send a blank email message to:
> > > >> removeme-personal_submersibles@psubs.org
> > > >>
> > > >>Removal of your email address from this mailing list occurs by an
> > > >>automated process and should be complete within five minutes of
> > > >>our server receiving your request.
> > > >>
> > > >>PSUBS.ORG
> > > >>PO Box 311
> > > >>Weare, NH 03281
> > > >>603-529-1100
> > >
> > >
>>************************************************************************
> > >
> > >
>>************************************************************************
> > >
> > >
>>************************************************************************
> > > >>
> > > >>
> > > >>
> > >
> > >
> > >
> > >
> > >
> > >
>************************************************************************
> > >
>************************************************************************
> > >
>************************************************************************
> > >The personal submersibles mailing list complies with the US Federal
> > >CAN-SPAM Act of 2003. Your email address appears in our database
> > >because either you, or someone you know, requested you receive
messages
> > >from our organization.
> > >
> > >If you want to be removed from this mailing list simply click on the
> > >link below or send a blank email message to:
> > > removeme-personal_submersibles@psubs.org
> > >
> > >Removal of your email address from this mailing list occurs by an
> > >automated process and should be complete within five minutes of
> > >our server receiving your request.
> > >
> > >PSUBS.ORG
> > >PO Box 311
> > >Weare, NH 03281
> > >603-529-1100
> > >
>************************************************************************
> > >
>************************************************************************
> > >
>************************************************************************
> > >
> > >
> > >
> > >
> > >
> > >
> > >
>************************************************************************
> > >
>************************************************************************
> > >
>************************************************************************
> > >The personal submersibles mailing list complies with the US Federal
> > >CAN-SPAM Act of 2003. Your email address appears in our database
> > >because either you, or someone you know, requested you receive
messages
> > >from our organization.
> > >
> > >If you want to be removed from this mailing list simply click on the
> > >link below or send a blank email message to:
> > > removeme-personal_submersibles@psubs.org
> > >
> > >Removal of your email address from this mailing list occurs by an
> > >automated process and should be complete within five minutes of
> > >our server receiving your request.
> > >
> > >PSUBS.ORG
> > >PO Box 311
> > >Weare, NH 03281
> > >603-529-1100
> > >
>************************************************************************
> > >
>************************************************************************
> > >
>************************************************************************
> > >
> >
> >
> >
> >
> >
>
>************************************************************************
>
>************************************************************************
>
>************************************************************************
> >The personal submersibles mailing list complies with the US Federal
> >CAN-SPAM Act of 2003. Your email address appears in our database
> >because either you, or someone you know, requested you receive messages
> >from our organization.
> >
> >If you want to be removed from this mailing list simply click on the
> >link below or send a blank email message to:
> > removeme-personal_submersibles@psubs.org
> >
> >Removal of your email address from this mailing list occurs by an
> >automated process and should be complete within five minutes of
> >our server receiving your request.
> >
> >PSUBS.ORG
> >PO Box 311
> >Weare, NH 03281
> >603-529-1100
>
>************************************************************************
>
>************************************************************************
>
>************************************************************************
> >
> >
> >
> >
> >
>
>************************************************************************
>
>************************************************************************
>
>************************************************************************
> >The personal submersibles mailing list complies with the US Federal
> >CAN-SPAM Act of 2003. Your email address appears in our database
> >because either you, or someone you know, requested you receive messages
> >from our organization.
> >
> >If you want to be removed from this mailing list simply click on the
> >link below or send a blank email message to:
> > removeme-personal_submersibles@psubs.org
> >
> >Removal of your email address from this mailing list occurs by an
> >automated process and should be complete within five minutes of
> >our server receiving your request.
> >
> >PSUBS.ORG
> >PO Box 311
> >Weare, NH 03281
> >603-529-1100
>
>************************************************************************
>
>************************************************************************
>
>************************************************************************
> >
>
>
>
>
>
>************************************************************************
>************************************************************************
>************************************************************************
>The personal submersibles mailing list complies with the US Federal
>CAN-SPAM Act of 2003. Your email address appears in our database
>because either you, or someone you know, requested you receive messages
>from our organization.
>
>If you want to be removed from this mailing list simply click on the
>link below or send a blank email message to:
> removeme-personal_submersibles@psubs.org
>
>Removal of your email address from this mailing list occurs by an
>automated process and should be complete within five minutes of
>our server receiving your request.
>
>PSUBS.ORG
>PO Box 311
>Weare, NH 03281
>603-529-1100
>************************************************************************
>************************************************************************
>************************************************************************
>
>
>
>
>
>************************************************************************
>************************************************************************
>************************************************************************
>The personal submersibles mailing list complies with the US Federal
>CAN-SPAM Act of 2003. Your email address appears in our database
>because either you, or someone you know, requested you receive messages
>from our organization.
>
>If you want to be removed from this mailing list simply click on the
>link below or send a blank email message to:
> removeme-personal_submersibles@psubs.org
>
>Removal of your email address from this mailing list occurs by an
>automated process and should be complete within five minutes of
>our server receiving your request.
>
>PSUBS.ORG
>PO Box 311
>Weare, NH 03281
>603-529-1100
>************************************************************************
>************************************************************************
>************************************************************************
>
************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003. Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.
If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
removeme-personal_submersibles@psubs.org
Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.
PSUBS.ORG
PO Box 311
Weare, NH 03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************
________________________________________________________________________
Check out the new AOL. Most comprehensive set of free safety and security
tools, free access to millions of high-quality videos from across the web,
free AOL Mail and more.