Re: [PSUBS-MAILIST] CO2 Scrubber

[Coalbunny <coalbunny@vcn.com>]

R&D is a great activity.  But while one experiments with life support
improvements and modifications, I feel they should have a proven,
commerically produced fail-safe in case something goes wrong.
Carl


emm03@mirapoint.uow.edu.au wrote:
> 
> Holy dead horse.
> Some of you guys really are insistent on this idea of 'I know
> what I know, and I dont want to know no more'?
> 
> Playing, can also be called 'research and development'. If
> somone wants to play, then let him be. if you disagree, then
> do it privately unless you feel that everyone else would
> benefit. I am tired of seeing this attitude here.....its very
> killjoy and uninteresting.
> Can we leave it alone now?
> 
> EM.
> 
> ---- Original message ----
> >Date: Tue, 7 Jan 2003 01:41:03 -0500
> >From: "Herve" <caribsub@coqui.net>
> >Subject: Re: [PSUBS-MAILIST] CO2 Scrubber
> >To: <personal_submersibles@psubs.org>
> >
> >An engine hoist does not kill!
> >A defective CO2 scrubber without the right sofnolime will
> kill you.
> >A miscalculated hull will crush you at depth without warning.
> >You can bet on it. however if you considere sub making as a
> game that s your
> >life. Long time ago i learnt while student engineer that
> engineers dont
> >play, they may have fun but they dont play. Play and you
> will go broke,
> >loner or dead.
> >I would say that like in aeronautic what makes a good subman
> is an old
> >subman.
> >There are thousands of other items that are left to design
> and build that
> >are not "life support" why dont you focus on those, you will
> go under the
> >water sooner and safe.
> >Herve
> >
> >----- Original Message -----
> >From: "Warrend Greenway" <dub@linuxmail.org>
> >To: <personal_submersibles@psubs.org>
> >Sent: Monday, January 06, 2003 5:57 PM
> >Subject: Re: [PSUBS-MAILIST] CO2 Scrubber
> >
> >
> >> Because that's what I do every day of my life. I build
> things I really
> >> could buy, and push technology. I come from a family of
> engineers. We
> >don't
> >> sit on our cheeks! We DO things. I needed an engine
> hoist...So my dad and
> >> myself designed the best darn hoist you have ever seen and
> built it! We
> >> could have actually bought a good enough hoist for less,
> but we wanted to
> >> build it. That is the real reason I am interested in
> PSUBS. I will build
> >my
> >> hull, my instruments, my air recycling system, and my
> power/speed
> >controller
> >> circuitry. Why? Because that's the game! I will carefully
> test my system
> >before
> >> I use it, and if I can't make it function reliably then I
> won't use it. I
> >might
> >> even use the sofnolime blend just for fun, but I will
> still build my own
> >waste-
> >> heat rechargeable system to use it in. Besides it's mostly
> just fun to
> >consider
> >> the alternatives to standard systems. But I also see what
> you are saying.
> >Building
> >> everything is not for everyone. You may not have the time
> or interest.
> >That's
> >> fine.
> >>
> >> Warren.
> >>
> >> > Hi,
> >> > I dont understand why you dont want to use the sofnolime
> specially
> >designed
> >> > for life support systems, do you want to make your own
> just to save $50
> >and
> >> > risk your life.
> >> > Amazing to see that every year divers die with market
> rebreathers, yet
> >guys
> >> > outhere are ready to dive in carboard sub and milk
> cartons rebreathers
> >and
> >> > try anything for the freedom of doing it.
> >> > A "regular" sub is ALREADY difficult and tricky to put
> together, why
> >even
> >> > considere nuclear homemade sub, flying subs, propane
> subs, peroxyde
> >subs,
> >> > and other out of your mind submersible, did anyone tried
> telekinesis
> >sub,
> >> > warp sub,  or time travel sub, is there anyone left here
> who wants to
> >build
> >> > just a realistic sub?
> >> > Herve
> >> > ----- Original Message -----
> >> > From: "Warrend Greenway" <dub@linuxmail.org>
> >> > To: <personal_submersibles@psubs.org>
> >> > Sent: Monday, January 06, 2003 1:03 PM
> >> > Subject: Re: [PSUBS-MAILIST] CO2 Scrubber
> >> >
> >> >
> >> > > I understand why divers wouldn't want to, but I still
> do. I don't
> >> > > see what the problem is. You simply have to properly
> granulate and
> >> > > hydrate the calcium hydroxide. Furthermore, you can
> get the product
> >> > > from chemical suppliers properly packaged and pure for
> less. I
> >wouldn't
> >> > > need of want the coloring agent. I would be using CO2
> analyzers on
> >inlet
> >> > > and exhaust to decide when to replace. Like I said
> though, the medium
> >is
> >> > > rechargeable. I don't think you would want to if you
> were talking
> >short
> >> > > range weekend diver...
> >> > >
> >> > > Warren.
> >> > >
> >> > > > At 09:52 AM 1/6/2003 +0800, Warrend Greenway wrote:
> >> > > > >The basic scrubber will consist of a canister with
> two screens
> >> > > >
> >> > > > >calcium hydroxide is standard slaked or hydrated
> lime, available at
> >any
> >> > > > hardware
> >> > > > >store for a few bucks a fifty pound sack.
> >> > > >
> >> > > > I've been on the "rebreather" listserv for a couple
> years since this
> >is
> >> > > > another interest of mine. You might enjoy this
> website--
> >> > > > http://www.atlimp.com/pend2.htm, although he is more
> serious with
> >other
> >> > > > projects - http://www.atlimp.com/home.htm
> >> > > > other "famous" homemades -
> >> > > >
> http://www.metacut.com/rebreathers/TP2000/Default.htm (this
> author
> >died
> >> > > > last month when the helicopter he was piloting
> crashed into NY
> >> > waterfront
> >> > > > at night- another dangerous activity),
> >> > > > http://home1.gte.net/doctrbob/CCO2.htm,
> >> > > > http://www.hrc.wmin.ac.uk:8080/xml/kiss/home,
> >> > > > http://insel.heim.at/malediven/350052/english.htm
> >> > > >
> >> > > > I don't think any serious divers would use hardware
> store hydrated
> >lime.
> >> > > > The CO2 absorption depends on the exposure to the
> surface area of
> >the
> >> > > > sodalime "granules" and anyone who bets their life
> on such only
> >> > purchases
> >> > > > prepared "sodalime" from suppliers that have a
> consistant and
> >reliable
> >> > > > product. The sodalime is discarded and replaced in
> the scrubber for
> >each
> >> > > > dive. source -
> http://www.metacut.com/rebreathers//sofnolime.htm -
> >this
> >> > one
> >> > > > changes color as product is used up.
> >> > > >
> >> > > > William Alford
> >> > > > walford@dbtech.net
> >> > > >
> >> > > > Tout comprendre c'est tout pardonner
> >> > >
> >> > > --
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