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David, Perhaps you can bond a ring of acrylic to the outside base of the dome like is done on K-250 hatches, like the one on Snoopy. Greg Cottrell told me that he anneals the dome and ring before he bonds them together with the solvent, then anneals them again once they are cured out. Regards, Brent Hartwig > To: personal_submersibles@psubs.org > From: james@guernseysubmarine.com > Subject: RE: [PSUBS-MAILIST] Venting an ambient sub > Date: Tue, 26 Aug 2008 12:39:36 +0100 > > Hi David. > > > I bid against you on e-bay on that one! Let me know if Carlos wants to pass this one up. > > I bought the dome back myself on ebay (you know like your not supposed to do) because i didnt think it was going for enough. If i'd known it was a psubber i'd have let you have it. > > Anyway, Carlos doesnt want it, so you are welcome to it if you just cover the postage. > > Remember there is no flange (which was why i didnt use it), so how you'll mount it i don't know. > > Regards > James > > > ----- Original Message ----- > From: David Bartsch [mailto:dbartsch2236@hotmail.com] > To: personal_submersibles@psubs.org > Sent: Fri, 22 Aug 2008 13:29:20 -0400 > Subject: RE: [PSUBS-MAILIST] Venting an ambient sub > > James, > > I bid against you on e-bay on that one! Let me know if Carlos wants to pass this one up. > > David Bartsch> To: personal_submersibles@psubs.org> From: james@guernseysubmarine.com> Subject: Re: [PSUBS-MAILIST] Venting an ambient sub> Date: Fri, 22 Aug 2008 15:16:45 +0100> > Hi Carlos.> > Just reading your post about your new project. > > I have an acrylic dome that you might be interested in for your project. Its 5mm thick by about 500mm OD i think. I'd have to check.> > I bought it for an ambient sub similar to your idea, but i changed my mind in the end and am building 1atm.> > You can have it for the cost of postage if you like. Have a look here. (its the one at the top, 1/4 inch i think i put)> > http://guernseysubmarine.wordpress.com/> > Contact me off list if your interested.> > Kind regards> James> > > > From: Carlos Del Valle [mailto:carlosd072657@gmail.com]> To: personal_submersibles@psubs.org> Sent: Fri, 22 Aug 2008 09:13:10 -0400> Subject: Re: [PSUBS-MAILIST] Venting an ambient sub> > Hi Pierre,> My sub will be poplar wood covered in fiberglass. Hull shape is essentially> 6' long by 3' wide, looking somewhat like an overturned canoe, with a 1/4 "> thick 22" diameter Acrylic dome on top, hull ends will be tapered.> Batt. box, seat,> ballast weight, will be suspended just below the hull. Two smaller 7" dia. domes> will be added to provide vision downward. It will be powered by a> single electric> trolling motor employing a Kort nozzle for yaw control. Small diving planes will> provide pitch control. A single 80cu ft scuba tank will provide the> air. A medical> flow meter will bleed in 20 lpm, a gate valve will vent the "cabin"> air to maintain> a constant level of water with an adequate air exchange. There will be> a separate> bulkheaded ballast tank forward, with it's own controls, all of which> will be manual.> Analog instruments will include depth and tank pressure gauge, and a digital> dive computer. I live here in sunny Florida so I don't mind having> approx half my> body immersed in water. I would like to keep the water at waist level, leaving> the rest of me relatively dry. I will be diving the sub in Crystal> River and the various> springs which have very clear water with depths about 20'. Max depth> will be 2 atms. At this stage I'm just building sub components, this> will be a long labor> of love. I think that about does it. What do you think, should my wife takeout> a higher insurance policy on me. : )> Best Regards, Carlos> > On Fri, Aug 22, 2008 at 6:58 AM, Marie-Andr?e et Pierre> <poulin.carrier@videotron.ca> wrote:> > Hello Carlos,> >> > I have a small dry ambient sub and I'll be glad to help you on designing> > yours.> >> > Can you tell us more about your project?> >> > Is it dry or wet sub? what deep you plan to go. how will it be built? wood,> > metal, fiberglass?> >> > What thickness are gonna be the windows, etc...> >> > remember that no sub is truely ambient. at any point the hull must resist to> > a small amount of pressure.> >> > Later.> >> > Pierre "still alive but not diving" Poulin> >> >> >> >> > ----- Original Message ----- From: "Carlos Del Valle"> > <carlosd072657@gmail.com>> > To: <personal_submersibles@psubs.org>> > Sent: Thursday, August 21, 2008 6:06 PM> > Subject: Re: [PSUBS-MAILIST] Venting an ambient sub> >> >> >> Thanks Joe, I'm a newby and I appreciate any advice you guys can give.> >> I'm going to give IVCORP a call and see what type of valve they use in> >> their sportsub. Just to let you know, I'm a Respiratory Therapist and> >> was assigned to a hyperbaric unit for two of my 30 yrs in heath care..> >> If any of you have any questions about diving medicine or pulmonary> >> physiology related to hyperbaric> >> environments please let me know, I'd like to help,Thanks again Joe> >> Best Regards, Carlos> >> On 8/21/08, Joseph Perkel <joeperkel@hotmail.com> wrote:> >>>> >>> Hi Carlos,> >>>> >>> I did a little ambient research several years ago. As I recall, a gate> >>> valve> >>> fouls rather easily and is slow to operate. A ball valve may dump your> >>> cabin> >>> air much too quickly if heavy handed.> >>>> >>> I cannot recall, what IVC uses on the Sportsub (automatic pressure> >>> regulated> >>> poppet perhaps) but, whatever it is, I suspect that is what you should> >>> consider the best candidate.> >>>> >>> Good luck> >>>> >>> Joe> >>>> >>> > Date: Thu, 21 Aug 2008 10:06:06 -0400> >>> > From: carlosd072657@gmail.com> >>> > To: personal_submersibles@psubs.org> >>> > Subject: [PSUBS-MAILIST] Venting an ambient sub> >>>> >>> >> >>> > Hi all,I know most of you are into 1 atm subs,but I need a little help> >>> with my> >>> > "want to be sub". It will be similar to ivcorp's solo sub, I calculated> >>> > > my> >>> > minute volume @ 18 liters/min,(700cc tidal volume X 20 >> >>> > breaths/min).That's> >>> > how much I will be bleeding into the sub.To vent that amount can I use> >>> > a simple gate valve to do it?> >>> > I figure I can start the flow, then adjust the gate valve until the> >>> > level of water in> >>> > the sub remains constant.This will ensure that I have a constant >> >>> > exchange> >>> of> >>> > air. I will have a separate ballast tank forward to control buoyancy.> >>> > Trying to build a water/air tight batt. box is another issue.> >>> > I would greatly appreciate any advice you guys can give,Thanks> >>> > Carlos> >>> >> >>> >> >>> >> >>> >> >>> ************************************************************************> >>> >> >>> ************************************************************************> >>> >> >>> ************************************************************************> >>> > 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 53> >>> > 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 53> >> 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 53> > 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 53> Weare, NH 03281> 603-529-1100> ************************************************************************> ************************************************************************> ************************************************************************> > _________________________________________________________________ > See what people are saying about Windows Live. Check out featured posts. > http://www.windowslive.com/connect?ocid=TXT_TAGLM_WL_connect2_082008 > |