<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office"><head><!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]--></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1465605443289_2587"><span id="yui_3_16_0_ym19_1_1465605443289_2593">Yes.</span></div><div id="yui_3_16_0_ym19_1_1465605443289_2561"><span id="yui_3_16_0_ym19_1_1465605443289_2586">Cliff has a system that reads off one O2 sensor & seems to work fine, but I</span></div><div id="yui_3_16_0_ym19_1_1465605443289_2610" dir="ltr"><span id="yui_3_16_0_ym19_1_1465605443289_2609">want the redundancy I will get with three O2 sensors as per a rebreather. It is a bit</span></div><div id="yui_3_16_0_ym19_1_1465605443289_2693" dir="ltr"><span id="yui_3_16_0_ym19_1_1465605443289_2692">more complicated as if one O2 sensor is reading out of sync with the other two</span></div><div id="yui_3_16_0_ym19_1_1465605443289_2694" dir="ltr"><span id="yui_3_16_0_ym19_1_1465605443289_2697">it will take the measurements from those two as Gospel. So I want to use a </span></div><div id="yui_3_16_0_ym19_1_1465605443289_2707" dir="ltr"><span id="yui_3_16_0_ym19_1_1465605443289_2716">rebreather module that already has the algorithm for that. </span></div><div id="yui_3_16_0_ym19_1_1465605443289_2696" dir="ltr"><span id="yui_3_16_0_ym19_1_1465605443289_2695">The bellows add system relies on cabin pressure which can fluctuate for </span></div><div id="yui_3_16_0_ym19_1_1465605443289_2713" dir="ltr"><span id="yui_3_16_0_ym19_1_1465605443289_2715">reasons other than a variation in the O2 levels. And because my sub is so small any</span></div><div id="yui_3_16_0_ym19_1_1465605443289_2825" dir="ltr"><span id="yui_3_16_0_ym19_1_1465605443289_2824">atmospheric conditions are going to fluctuate more quickly than </span><span id="yui_3_16_0_ym19_1_1465605443289_2832">a larger sub,</span></div><div id="yui_3_16_0_ym19_1_1465605443289_2835" dir="ltr"><span id="yui_3_16_0_ym19_1_1465605443289_2836">hence the need for a reliable system that responds to changes quickly.</span></div><div id="yui_3_16_0_ym19_1_1465605443289_2870" dir="ltr"><span id="yui_3_16_0_ym19_1_1465605443289_2892">There is a bit of a blurb on the system AP developed for James Cameron here.</span></div><div id="yui_3_16_0_ym19_1_1465605443289_2897" dir="ltr"><span id="yui_3_16_0_ym19_1_1465605443289_2905"><a class="enhancr2_1ac14366-aff6-a949-8618-c3df3b074a11" id="yui_3_16_0_ym19_1_1465605443289_2904" href="http://www.apdiving.com/en/trip-report-apd-provide-the-life-support-for-james-camerons-deepest-dive-march-2012/">James Cameron's Deepsea Challenge. Marianna Trench Trip Report Mar 2012</a></span></div><div id="yui_3_16_0_ym19_1_1465605443289_2911"><br></div><div class="yahoo-link-enhancr-card yahoo-link-enhancr-not-allow-cover ymail-preserve-class ymail-preserve-style img-overlay-selected" id="enhancr2_1ac14366-aff6-a949-8618-c3df3b074a11" style='font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; max-width: 400px;' dir="ltr" contenteditable="false" data-size="medium" data-type="yenhancr" data-embed-url="" data-category="article" data-url="http://www.apdiving.com/en/trip-report-apd-provide-the-life-support-for-james-camerons-deepest-dive-march-2012/"> <a class="yahoo-enhancr-cardlink" id="yui_3_16_0_ym19_1_1465605443289_2920" style="color: rgb(0, 0, 0) !important; text-decoration: none !important;" href="http://www.apdiving.com/en/trip-report-apd-provide-the-life-support-for-james-camerons-deepest-dive-march-2012/" target="_blank" rel="noreferrer"> <table class="card-wrapper" id="yui_3_16_0_ym19_1_1465605443289_2919" style="max-width: 400px;" border="0" cellspacing="0" cellpadding="0"> <tbody id="yui_3_16_0_ym19_1_1465605443289_2918"><tr id="yui_3_16_0_ym19_1_1465605443289_2917"> <td width="400" id="yui_3_16_0_ym19_1_1465605443289_2916"> <table width="100%" class="card-info" id="yui_3_16_0_ym19_1_1465605443289_2915" style="background: rgb(255, 255, 255); border-width: 1px 1px 3px; border-style: solid; border-color: rgb(224, 228, 233) rgb(224, 228, 233) rgb(0, 0, 0); border-image: none; max-width: 400px;" border="0" cellspacing="0" cellpadding="0"> <tbody id="yui_3_16_0_ym19_1_1465605443289_2914"><tr id="yui_3_16_0_ym19_1_1465605443289_2913"> <td style="padding: 16px 0px 16px 12px; vertical-align: top;"> </td> <td id="yui_3_16_0_ym19_1_1465605443289_2912" style="padding: 16px 12px; width: 99%; vertical-align: middle;"> <h2 class="card-title" style='margin: 0px 0px 4px; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;'>James Cameron's Deepsea Challenge. Marianna Trench Trip Report Mar 2012</h2> <div class="card-description" style="color: rgb(153, 153, 153); line-height: 15px; font-size: 11px;"></div> </td> <td class="card-share-container"></td> </tr> </tbody></table> </td> </tr> </tbody></table> </a></div><div id="yui_3_16_0_ym19_1_1465605443289_2921">Cheers Alan<br></div><div id="yui_3_16_0_ym19_1_1465605443289_2842" dir="ltr"><span></span><br></div><div id="yui_3_16_0_ym19_1_1465605443289_2800" dir="ltr"><span id="yui_3_16_0_ym19_1_1465605443289_2778"></span><br></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1465605443289_2503"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1465605443289_2540" style="display: block;"> <div id="yui_3_16_0_ym19_1_1465605443289_2539" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1465605443289_2538" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1465605443289_2537" dir="ltr"> <font id="yui_3_16_0_ym19_1_1465605443289_2714" face="Arial" size="2"> <hr size="1" id="yui_3_16_0_ym19_1_1465605443289_2747"> <b><span style="font-weight: bold;">From:</span></b> Al Secor via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Saturday, June 11, 2016 12:28 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Cornelius compressors<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1465605443289_2741"><br>Isn't that what people are basically doing already? Whether you are using a flow meter, needle valve, mpu controlled solenoid valve or bellows add system ala Dr Phil, you are basically adding O2 at your metabolic rate the same as a rebreather would do...<br><br>Al Secor<br><br>--------------------------------------------<br>On Fri, 6/10/16, Alan James via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br> Subject: Re: [PSUBS-MAILIST] Cornelius compressors<br> To: "Personal Submersibles General Discussion" <<a href="mailto:personal_submersibles@psubs.org" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> Date: Friday, June 10, 2016, 6:34 PM<br> <br> Thanks<br> Steve.How<br> easy would it be to adapt a rebreather O2 feed system to a<br> submarine?I<br> believe APdiving in the UK did this for James Cameron's<br> sub.I'm<br> building a one person sub about the size of Cliff's R300<br> & because of the small size,wanted<br> a system that responded quickly to O2 deviations.I<br> envisage the system as having a constant flow of O2 at a<br> rate just below my minimumconsumption,<br> with a top up from readings off 3 O2 sensors.Cheers<br> Alan<br> <br> <br> From: Stephen Fordyce<br> via Personal_Submersibles<br> <<a href="mailto:personal_submersibles@psubs.org" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> To: Personal<br> Submersibles General Discussion<br> <<a href="mailto:personal_submersibles@psubs.org" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br> <br> Sent: Friday,<br> June 10, 2016 4:26 PM<br> Subject:<br> [PSUBS-MAILIST] Cornelius compressors<br> <br> <br> Hi<br> all,I<br> know Hank uses a Cornelius compressor and I think others<br> have enquired after them. In a nutshell, it's a<br> small/lightweight (~60lb?) high-pressure compressor no<br> longer made, originally used by the US Air Force in aircraft<br> - so it's pretty well spec'd. Also by default<br> runs off nominal 27VDC - so highly suitable for install in<br> a PSUB, if you can handle the current draw, noise and 2cfm<br> flowrate.<br> Well<br> in the course of my business, I sold a SCUBA nitrox mixing<br> stick to a guy in Canada who mounted it on a Cornelius<br> compressor - see a picture of the final setup he sent me (if<br> the recent discussions of email vs Facebook haven't put<br> you off!):<a href="https://www.facebook.com/tfmengineeringaust/photos/a.754931991306953.1073741830.754476911352461/858648047602013/?type=3&theater" target="_blank">https://www.facebook.com/tfmengineeringaust/photos/a.754931991306953.1073741830.754476911352461/858648047602013/?type=3&theater</a><br> Anyway, we<br> got to talking and he said he got the compressor from a<br> bloke in Florida. I made contact and discovered this<br> bloke has a whole lot of them that he is slowly setting<br> up and selling as fully functional breathing air compressors<br> (they are old but apparently well preserved and have only a<br> few hours - he runs them in). He also has parts as well<br> for anyone like Hank who already has a unit. I'm<br> contemplating bringing a few into Australia to<br> on-sell.<br> In case<br> anyone is interested, his name is Paul Deverell, with email<br> <a href="mailto:pauldeverell@ymail.com" ymailto="mailto:pauldeverell@ymail.com">pauldeverell@ymail.com</a><br> and phone number +1 786-367-3365<br> Cheers,Steve<br> _______________________________________________<br> Personal_Submersibles mailing list<br> <a href="mailto:Personal_Submersibles@psubs.org" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br> <a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br> <br> <br> <br> <br> -----Inline Attachment Follows-----<br> <br> _______________________________________________<br> Personal_Submersibles mailing list<br> <a href="mailto:Personal_Submersibles@psubs.org" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br> <a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br><br></div> </div> </div> </div></div></body></html>