[PSUBS-MAILIST] Personal_Submersibles Digest, Vol 17, Issue 15
roberto alvarez via Personal_Submersibles
personal_submersibles at psubs.org
Wed Nov 12 17:29:33 EST 2014
Thanks for the feedback, i respect all the information and comments, i will
not let my imagination fly away from the main idea, as soon as the k250
plas arrive will start to work on the bom and parts list, as i live in
mexico, if i try to import a sub, will be almost ilegal and the tax will
increase, if we build we can registered as any othe vessel
and i will use it, i need go deeper and safer than with scuba gear, my area
is the sea of cortez were the totoaba and the endemic porpoise named
vaquita marina need some one who take care of them
2014-11-12 14:11 GMT-08:00 via Personal_Submersibles <
personal_submersibles at psubs.org>:
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> Today's Topics:
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> 1. Re: Hanks Trolley (James Frankland via Personal_Submersibles)
> 2. just more calc (roberto alvarez via Personal_Submersibles)
> 3. Re: just more calc (hank pronk via Personal_Submersibles)
> 4. Re: just more calc (Alan James via Personal_Submersibles)
> 5. Re: just more calc (via Personal_Submersibles)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 12 Nov 2014 13:35:58 +0000
> From: James Frankland via Personal_Submersibles
> <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion
> <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] Hanks Trolley
> Message-ID:
> <CAHpB=
> UD+7YAnU8VTODaZc_YqFvxT6ioa_MuPmECJbYWq2PEFQQ at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Sounds good Hank. Looking forward to seeing it. Im going to make
> something similar. Although mine is going to be more of a very low loading
> trailer. Got some real awkward new "pain in the neck" trailer laws here,
> so the old glory days of the trailer made from scaffolding poles and
> fittings is gone......
> regards
> James
>
> On 12 November 2014 13:16, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> > Hi James,
> > My cart is progressing well, I have modified the wheels by welding new
> > centers in so they fit the new axels. Also yesterday I made the mount
> for
> > the hydraulic motor that drives the differential. Today I am building
> the
> > frame that holds the whole thing together. I am dreading the ugly job, I
> > am using old heating oil tanks for ballast tanks and they need to be cut
> in
> > half and cleaned.
> > Okay, now get back to work, :-)
> > Hank
> > --------------------------------------------
> > On Wed, 11/12/14, James Frankland via Personal_Submersibles <
> > personal_submersibles at psubs.org> wrote:
> >
> > Subject: [PSUBS-MAILIST] Hanks Trolley
> > To: "personal_submersibles at psubs.org" <personal_submersibles at psubs.org>
> > Received: Wednesday, November 12, 2014, 5:17 AM
> >
> > Hi
> > Hank,Just wondering how your getting on with your
> > trolley cart thing modifications?(yes, I am bored
> > at work)Kind regardsJames
> >
> > -----Inline Attachment Follows-----
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> ------------------------------
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> Message: 2
> Date: Wed, 12 Nov 2014 10:11:59 -0800
> From: roberto alvarez via Personal_Submersibles
> <personal_submersibles at psubs.org>
> To: personal_submersibles at psubs.org
> Subject: [PSUBS-MAILIST] just more calc
> Message-ID:
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> CAJANxSPqgbcojZiG9FGufdKZYFoVKgfd24xc6ykL0iR74rcMTQ at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Good morning this weekend i read the book on the psubs website as i can
> read ,is a collection of designs and experiences, i am working with the air
> volume and CO2 production, this because i divide the project in 3 main
> areas, pressure hull-life support-control & propultion
> learn that i can be safe on a composite hull, even a wood hull below the
> 100 ft i can dive even on an oil drum , the main concern will be O2
> depletion and CO2 pollution we exhale 1.7 cubic feet hour and by
> coincidence we need 1.7 cubic meters per day
> will use this info for a better internal space before any other
> consideration, yesterday i went to a LPG truck scrap yard, found that the
> inside of the tanks are free of rust, they have wave brakers ( internal
> plates ) have inspection holes with 2 inch tempered glass and build from
> 0.500 inch plate, 54 inch in diameter and 12 feet lengh,
>
> may be other option
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> ------------------------------
>
> Message: 3
> Date: Wed, 12 Nov 2014 10:45:21 -0800
> From: hank pronk via Personal_Submersibles
> <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion
> <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] just more calc
> Message-ID:
> <1415817921.16383.YahooMailBasic at web125402.mail.ne1.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
>
> Hi Roberto,
> It sounds like you are interested in using your sub more than actually
> building your sub. Perhaps you should consider buying a K250, I am sure it
> will be cheaper in the end.
> Hank --------------------------------------------
> On Wed, 11/12/14, roberto alvarez via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Subject: [PSUBS-MAILIST] just more calc
> To: personal_submersibles at psubs.org
> Received: Wednesday, November 12, 2014, 1:11 PM
>
> Good morning this weekend i
> read the book on the psubs website as i can read ,is a
> collection of designs and experiences, i am working with the
> air volume and CO2 production, this because i divide the
> project in 3 main areas, pressure hull-life support-control
> & propultion
> learn that i can be safe on a composite hull, even a
> wood hull below the 100 ft i can dive even on an oil drum ,
> the? main concern will be O2 depletion and CO2 pollution we
> exhale 1.7 cubic feet hour? and by coincidence we need 1.7
> cubic meters per day
> will use this info for a better internal space before
> any other consideration, yesterday i went to a LPG truck
> scrap yard, found that the inside of the tanks are free of
> rust, they have? wave brakers ( internal plates ) have
> inspection holes with 2 inch tempered glass and? build from
> 0.500 inch plate, 54 inch in diameter and 12 feet lengh,?
>
> may be other option
>
>
> -----Inline Attachment Follows-----
>
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Wed, 12 Nov 2014 20:49:09 +0000 (UTC)
> From: Alan James via Personal_Submersibles
> <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion
> <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] just more calc
> Message-ID:
> <
> 1861736876.168091.1415825349885.JavaMail.yahoo at jws100148.mail.ne1.yahoo.com
> >
>
> Content-Type: text/plain; charset="utf-8"
>
> Hi Roberto,>>>learn that i can be safe on a composite hull, even a wood
> hull below the 100 ft i can dive even on an oil drum?....? NO you won't be
> safe with any of those 3. Years ago we calculated that an oil drum wouldn't
> be safe to 15ft, & it also depends on it's condition.Fiberglass is very
> difficult to analyze for strength due to the human equation, the saturation
> of the cloth & the fact that the cloth has different strengths indifferent
> directions. At 100ft there is about 7,200lb pressure on every square foot
> of your hull, so calculations have to be very accurate to avoid being paste
> in a can on the sea bed:).Did you see Phil Nuyten's paper on life support.
> It is very good.Alan
> From: roberto alvarez via Personal_Submersibles <
> personal_submersibles at psubs.org>
> To: personal_submersibles at psubs.org
> Sent: Thursday, November 13, 2014 7:11 AM
> Subject: [PSUBS-MAILIST] just more calc
>
> Good morning this weekend i read the book on the psubs website as i can
> read ,is a collection of designs and experiences, i am working with the air
> volume and CO2 production, this because i divide the project in 3 main
> areas, pressure hull-life support-control & propultion
> learn that i can be safe on a composite hull, even a wood hull below the
> 100 ft i can dive even on an oil drum , the? main concern will be O2
> depletion and CO2 pollution we exhale 1.7 cubic feet hour? and by
> coincidence we need 1.7 cubic meters per day
> will use this info for a better internal space before any other
> consideration, yesterday i went to a LPG truck scrap yard, found that the
> inside of the tanks are free of rust, they have? wave brakers ( internal
> plates ) have inspection holes with 2 inch tempered glass and? build from
> 0.500 inch plate, 54 inch in diameter and 12 feet lengh,?
>
> may be other option
>
>
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
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> ------------------------------
>
> Message: 5
> Date: Wed, 12 Nov 2014 17:12:06 -0500
> From: via Personal_Submersibles <personal_submersibles at psubs.org>
> To: personal_submersibles at psubs.org
> Subject: Re: [PSUBS-MAILIST] just more calc
> Message-ID: <3b7b5.1d600e48.41953536 at aol.com>
> Content-Type: text/plain; charset="us-ascii"
>
> Hello, Roberto,
>
> The LPG tanks are designed to contain internal pressure, not to withstand
> external pressure. Also the hydrocarbons from the gas migrate into the
> metal and interfere with the integrity of new welds. A few people have
> made
> very shallow subs from LPG used tanks, but you wouldn't really gain much
> cost advantage, and you would sacrifice capability and safety. You would
> also
> run into other problems installing the hull penetrations. Many of us
> initially thought of using an old propane tank, but quickly discarded the
> idea.
>
> On the Psubs site if you will go to PSUBS Community, then Projects &
> Photos, you will be able to look at the journals of the building process
> of a
> number of subs. These two links are excellent:
> http://www.psubs.org/projects/1245611411/kw350trustworthy/
> http://www.guernseysubmarine.com/ You will learn a lot from both of
> them.
>
> The process of building a sub from an existing design takes a long time.
> Creating a new design takes much longer.
>
> Best wishes,
> Jim T.
>
>
> In a message dated 11/12/2014 2:52:30 P.M. Central Standard Time,
> personal_submersibles at psubs.org writes:
>
>
> Hi Roberto,
> >>>learn that i can be safe on a composite hull, even a wood hull below
> the 100 ft i can dive even on an oil drum ....
> NO you won't be safe with any of those 3. Years ago we calculated that
> an oil drum wouldn't be safe to 15ft, & it also depends on it's
> condition.
> Fiberglass is very difficult to analyze for strength due to the human
> equation, the saturation of the cloth & the fact that the cloth has
> different
> strengths in
> different directions. At 100ft there is about 7,200lb pressure on every
> square foot of your hull, so calculations have to be very accurate to
> avoid
> being paste in a can on the sea bed:).
> Did you see Phil Nuyten's paper on life support. It is very good.
> Alan
>
>
>
>
> ____________________________________
> From: roberto alvarez via Personal_Submersibles
> <personal_submersibles at psubs.org>
> To: personal_submersibles at psubs.org
> Sent: Thursday, November 13, 2014 7:11 AM
> Subject: [PSUBS-MAILIST] just more calc
>
>
>
>
>
>
>
> Good morning this weekend i read the book on the psubs website as i can
> read ,is a collection of designs and experiences, i am working with the
> air
> volume and CO2 production, this because i divide the project in 3 main
> areas, pressure hull-life support-control & propultion
>
> learn that i can be safe on a composite hull, even a wood hull below the
> 100 ft i can dive even on an oil drum , the main concern will be O2
> depletion and CO2 pollution we exhale 1.7 cubic feet hour and by
> coincidence we
> need 1.7 cubic meters per day
>
> will use this info for a better internal space before any other
> consideration, yesterday i went to a LPG truck scrap yard, found that the
> inside of
> the tanks are free of rust, they have wave brakers ( internal plates )
> have
> inspection holes with 2 inch tempered glass and build from 0.500 inch
> plate, 54 inch in diameter and 12 feet lengh,
>
>
> may be other option
>
>
>
>
>
>
>
>
>
>
>
>
>
> _______________________________________________
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>
>
>
>
>
>
>
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> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
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