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Re: [PSUBS-MAILIST] acrylic sphere/lithium Hydroxide
Wow great information! This website should be listed
in the psub source list!
--- Coalbunny <coalbunny@vcn.com> wrote:
> I have dealt with Reynolds Polymer, and they won't
> do anything without
> an engineer involved.
> Carl
>
>
> Ppjanca@aol.com wrote:
> >
> > The ultimate US source for acrylic
> hyperhemispheres is Reynolds Polymer
> > Technologies, Inc. of Grand Junction Colorado (<A
> >
>
HREF="http://www.reynoldspolymer.com">www.reynoldspolymer.com</A>),
> ask for
> > Kyle. In the UK you have the choice of Stanley
> Plastics or Blanson. All three
> > have supplied me with PVHO acrylics in the past
> and with one single (UK)
> > exception we have been most pleased with price and
> delivery. One big question
> > to ask them is "what size tooling do you already
> have, and.... is it
> > proprietary?" Then design around their tooling
> inventory. I have over $250K
> > invested in acrylic tooling and you had better not
> expect to purchase acrylic
> > off of my tooling without some compensation. In
> many cases a few ice cold
> > Coronas will be sufficient compensation if you are
> a serious builder and
> > safety oriented.
> > A 66" hyperhemisphere with 5" nominal wall
> thickness should cost in the
> > region of $160K.
> > AMRON International (<A
>
HREF="http://www.amronintl.com">www.amronintl.com</A>
> > ) sell "off the shelf" scrubbers but they are
> relatively easy to make using
> > a dual voltage vacuum cleaner motor (BUFFALO is
> one brand that comes to mind)
> > so that you can run it at normal speed on 12/24
> vdc and then boost the
> > scrubbing action in stressful periods by switching
> to 120 vdc. I always
> > prefer transparent (acrylic again NOT Lexan)
> canisters with "milk filters"
> > upstream and downstream (top and bottom of the
> acrylic canister) to trap
> > fines. The only grade used in commercial boats is
> "408 white to violet." By
> > using the transparent canister you can see the
> color change take place. It
> > is probably unnecessary to say this but you want
> the scrubber intake to be as
> > low as possible in the command compartment because
> co2 is a heavy gas. The
> > most popular discussion in making scrubbers is
> "suck or blow." We always
> > prefer to draw the command sphere/compartment
> atmosphere through the scrubber
> > bed. My personal feeling is that I am tuned to
> hear the scrubber slow down
> > and immediately suspect (1) low voltage (2)
> scrubber bed loading (dust or
> > moisture). Hopefully all of you know how to make
> a lung powered scrubber and
> > have plans to do so!
> > Again, suck or blow is the big issue. Here the
> issue seems to be more
> > personal pilot opinion. In diving technology (wet
> type) we know that
> > exhalation resistance can often be more
> distressing than inhalation
> > resistance. For my money I will always scrub on
> the inhalation cycle!
> > We have used all of the popular co2 absorbents but
> I personally prefer
> > Sofnolime. You can purchase directly from <A
> HREF="http://www.oclugo.com">
> > www.oclugo.com</A> they presently have smaller
> containers in stock and are
> > expecting a large delivery of the 44# "kegs" in a
> mid-October.
> > Another great source for small quantities of
> absorbent is Advanced Diver
> > magazine
> > <A
>
HREF="http://www.advanceddivermagazine.com">www.advanceddivermagazine.com
> > </A>
> > Sorry for the long winded answers.
> > Best Regards:
> > Phillip Janca
> > Chairman
> > HyperTec, Inc.
> > World Leader in Hyperbaric Technologies
> > 800-218-3588
> > 940-564-5600
> > 940-564-5609 Fax
> > http://www.hypertec.ws
>
> --
> You're going to find that many of the truths we
> cling to depend greatly
> on our own point of view."
> -Obi-Wan Kenobi, ROTJ
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