<html><head></head><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1499735796854_4975"><span>Tim,</span></div><div id="yui_3_16_0_ym19_1_1499735796854_4976"><span><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1499735796854_4977"><span>If it makes you feel better, I had to scrap 6 aluminum 80s last year.</span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1499735796854_4978"><span><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1499735796854_4979"><span id="yui_3_16_0_ym19_1_1499735796854_4981">Greg C</span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1499735796854_4980"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1499735796854_4988" style="display: block;"> <div style="font-family: verdana, helvetica, sans-serif; font-size: 13px;" id="yui_3_16_0_ym19_1_1499735796854_4987"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1499735796854_4986"> <div dir="ltr" id="yui_3_16_0_ym19_1_1499735796854_4985"> <font size="2" face="Arial" id="yui_3_16_0_ym19_1_1499735796854_4984"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> T Novak 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> Monday, July 10, 2017 8:27 PM<br> <b id="yui_3_16_0_ym19_1_1499735796854_4983"><span style="font-weight: bold;" id="yui_3_16_0_ym19_1_1499735796854_4982">Subject:</span></b> Re: [PSUBS-MAILIST] Pressure Test<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1499735796854_4993"><br><div id="yiv2194395872"><style><!--
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--></style><div id="yui_3_16_0_ym19_1_1499735796854_4992"><div class="yiv2194395872WordSection1" id="yui_3_16_0_ym19_1_1499735796854_4991"><div class="yiv2194395872MsoNormal" id="yui_3_16_0_ym19_1_1499735796854_4990"><span style="font-size:11.0pt;font-family:"Calibri", sans-serif;color:#1F497D;" id="yui_3_16_0_ym19_1_1499735796854_4989">Hank,</span></div><div class="yiv2194395872MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri", sans-serif;color:#1F497D;">What is the price for those 21x120 composite CNG tanks? </span></div><div class="yiv2194395872MsoNormal" id="yui_3_16_0_ym19_1_1499735796854_4995"><span style="font-size:11.0pt;font-family:"Calibri", sans-serif;color:#1F497D;" id="yui_3_16_0_ym19_1_1499735796854_4994">Unrelated: for the first time in my diving history I have a scuba tank that just failed its hydro. Apparently a minor crack has appeared at the valve neck. This 12 year old, hardly used, aluminum 80 that came with my sub is now scrap metal, maybe worth $6. Darn.</span></div><div class="yiv2194395872MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri", sans-serif;color:#1F497D;">Tim</span></div><div class="yiv2194395872MsoNormal" id="yui_3_16_0_ym19_1_1499735796854_4996"><span style="font-size:11.0pt;font-family:"Calibri", sans-serif;color:#1F497D;"> </span></div><div id="yui_3_16_0_ym19_1_1499735796854_5000"><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in;" id="yui_3_16_0_ym19_1_1499735796854_4999"><div class="yiv2194395872MsoNormal" id="yui_3_16_0_ym19_1_1499735796854_4998"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri", sans-serif;">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri", sans-serif;" id="yui_3_16_0_ym19_1_1499735796854_4997"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>hank pronk via Personal_Submersibles<br><b>Sent:</b> Monday, July 10, 2017 2:26 PM<br><b>To:</b> Personal Submersibles General Discussion <personal_submersibles@psubs.org><br><b>Subject:</b> Re: [PSUBS-MAILIST] Pressure Test</span></div></div></div><div class="yiv2194395872MsoNormal"> </div><div id="yui_3_16_0_ym19_1_1499735796854_5002"><div id="yiv2194395872yui_3_16_0_ym19_1_1499721900962_4832"><div class="yiv2194395872MsoNormal" style="background:white;" id="yui_3_16_0_ym19_1_1499735796854_5001"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Kieth,</span></div></div><div id="yiv2194395872yui_3_16_0_ym19_1_1499721900962_4832"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">What are you up to that you need a cng tank?</span></div></div><div id="yiv2194395872yui_3_16_0_ym19_1_1499721900962_4832"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Hank</span></div></div><div id="yui_3_16_0_ym19_1_1499735796854_5004"><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;" id="yui_3_16_0_ym19_1_1499735796854_5003"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div id="yui_3_16_0_ym19_1_1499735796854_5007"><div id="yui_3_16_0_ym19_1_1499735796854_5006"><div id="yui_3_16_0_ym19_1_1499735796854_5005"><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Arial", sans-serif;color:black;">On Monday, July 10, 2017 9:13 AM, k6fee via Personal_Submersibles <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span><span style="font-family:"Helvetica", sans-serif;color:black;"></span></div></div><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div><div id="yui_3_16_0_ym19_1_1499735796854_5012"><div id="yiv2194395872"><div id="yui_3_16_0_ym19_1_1499735796854_5011"><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">Hank,</span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div id="yui_3_16_0_ym19_1_1499735796854_5010"><div class="yiv2194395872MsoNormal" style="background:white;" id="yui_3_16_0_ym19_1_1499735796854_5009"><span style="font-family:"Helvetica", sans-serif;color:black;" id="yui_3_16_0_ym19_1_1499735796854_5008">Thanks for the info, I'll check out Evil Bay and see what I can find. </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div id="yui_3_16_0_ym19_1_1499735796854_5014"><div class="yiv2194395872MsoNormal" style="background:white;" id="yui_3_16_0_ym19_1_1499735796854_5013"><span style="font-family:"Helvetica", sans-serif;color:black;">Keith T </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div id="yui_3_16_0_ym19_1_1499735796854_5016"><div class="yiv2194395872MsoNormal" style="background:white;" id="yui_3_16_0_ym19_1_1499735796854_5015"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div id="yiv2194395872composer_signature"><div id="yui_3_16_0_ym19_1_1499735796854_5019"><div class="yiv2194395872MsoNormal" style="background:white;" id="yui_3_16_0_ym19_1_1499735796854_5018"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:#575757;" id="yui_3_16_0_ym19_1_1499735796854_5017">Sent from my Verizon, Samsung Galaxy smartphone</span></div></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">-------- Original message --------</span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">From: hank pronk via Personal_Submersibles <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">Date: 7/10/17 2:48 AM (GMT-08:00) </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">To: Personal Submersibles General Discussion <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">Subject: Re: [PSUBS-MAILIST] Pressure Test </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div></div><div><div id="yiv2194395872yui_3_16_0_ym19_1_1499679435530_17164"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Kieth,</span></div></div><div id="yiv2194395872yui_3_16_0_ym19_1_1499679435530_17164"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">There are CNG tanks on Ebay, with some sellers that have lots of tanks that are still in service. The largest composite CNG tank I have come across is 21 inches OD by 120 inches long. There is a seller close to Salt Lake City Utah with a pretty big inventory.</span></div></div><div id="yiv2194395872yui_3_16_0_ym19_1_1499679435530_17164"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Hank</span></div></div><div><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div><div><div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Arial", sans-serif;color:black;">On Sunday, July 9, 2017 9:24 PM, k6fee via Personal_Submersibles <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span><span style="font-family:"Helvetica", sans-serif;color:black;"></span></div></div><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div><div><div id="yiv2194395872"><div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">Where are you guy sourcing the CNG tanks? Are larger diameter tanks available?</span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">Keith T </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div id="yiv2194395872composer_signature"><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:#575757;">Sent from my Verizon, Samsung Galaxy smartphone</span></div></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">-------- Original message --------</span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">From: hank pronk via Personal_Submersibles <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">Date: 7/9/17 7:49 PM (GMT-08:00) </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">To: Personal Submersibles General Discussion <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">Subject: Re: [PSUBS-MAILIST] Pressure Test </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div></div><div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Steve,</span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Greg was referring to steel cng storage tanks that are 48 inch ID spheres 3.25 inches thick. </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">I have also been looking at composite cng type 4 tanks as buoyancy modules. The tanks would be at full pressure (3,600 psi) </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Hank</span></div></div><div><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div><div><div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Arial", sans-serif;color:black;">On Sunday, July 9, 2017 8:44 PM, Stephen Fordyce via Personal_Submersibles <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span><span style="font-family:"Helvetica", sans-serif;color:black;"></span></div></div><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div><div><div id="yiv2194395872"><div><div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">Hi Hank,</span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">I was under the impression your CNG spheres are composite/fibre-wrapped? I presume you're aware that using a model based on metal components wouldn't apply well to composite.</span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">I think I posted about it, but I've done a lot of research and some testing on using composite cylinders underwater and it's potentially a bit scary, especially with salt water. If anyone is interested I can go into more detail.</span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">Cheers,</span></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">Steve</span></div></div></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">On Mon, Jul 10, 2017 at 11:53 AM, hank pronk via Personal_Submersibles <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span></div><blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in;"><div id="yiv2194395872yqt90275"><div><div><div id="yiv2194395872m_-8062362793588594983yui_3_16_0_ym19_1_1499651473443_3360"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">I use the calculator on Psubs written by Alec, it is fabulous because you change the values for different materials. </span></div></div><div id="yiv2194395872m_-8062362793588594983yui_3_16_0_ym19_1_1499651473443_3361"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Hank</span></div></div><div><div><div><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div><div><div><div><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Arial", sans-serif;color:black;">On Sunday, July 9, 2017 7:17 PM, james cottrell via Personal_Submersibles <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs. org</a>> wrote:</span><span style="font-family:"Helvetica", sans-serif;color:black;"></span></div></div><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div><div><div id="yiv2194395872m_-8062362793588594983yiv0466071481"><div><div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_9903"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Verdana", sans-serif;color:black;">I still think that a CNG sphere will go way deeper. How did you calculate that?</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10051"><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-size:10.0pt;font-family:"Verdana", sans-serif;color:black;"> </span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10057"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10056"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10055"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yqt05911"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10054"><div class="yiv2194395872MsoNormal" align="center" style="text-align:center;background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"><hr size="1" width="100%" align="center"></span></div><div class="yiv2194395872MsoNormal" style="background:white;"><b><span style="font-family:"Helvetica", sans-serif;color:black;">From:</span></b><span style="font-family:"Helvetica", sans-serif;color:black;"> hank pronk via Personal_Submersibles <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs. org</a>><br><b>To:</b> Personal Submersibles General Discussion <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs. org</a>> <br><b>Sent:</b> Sunday, July 9, 2017 4:38 PM<br><b>Subject:</b> Re: [PSUBS-MAILIST] Pressure Test</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10099"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10101"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10100"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10111"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Very true.</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499630532547_20107"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">I do love the idea, but, weight is a real killer, every pound is super critical. If I go with a 7500 footer then the buoyancy is cheap because I will use CNG tanks, don't tell Sean ;-) Then it will be awesome to have it rotate, just think you can rotate so the port is pointing down between your feet.</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499630532547_20107"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Hank</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10102"><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10107"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10106"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10105"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yqt64388"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10104"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Arial", sans-serif;color:black;">On Sunday, July 9, 2017 2:26 PM, james cottrell via Personal_Submersibles <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs. org</a>> wrote:</span><span style="font-family:"Helvetica", sans-serif;color:black;"></span></div></div><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10110"><div id="yiv2194395872m_-8062362793588594983yiv0466071481"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10109"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10108"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3575"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Verdana", sans-serif;color:black;">Yes....BUT...being able to get out on your own is never a bad thing.</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3593"><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-size:10.0pt;font-family:"Verdana", sans-serif;color:black;"> </span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3669"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3668"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3667"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yqt91755"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3666"><div class="yiv2194395872MsoNormal" align="center" style="text-align:center;background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"><hr size="1" width="100%" align="center"></span></div><div class="yiv2194395872MsoNormal" style="background:white;"><b><span style="font-family:"Helvetica", sans-serif;color:black;">From:</span></b><span style="font-family:"Helvetica", sans-serif;color:black;"> hank pronk via Personal_Submersibles <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs. org</a>><br><b>To:</b> Personal Submersibles General Discussion <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs. org</a>> <br><b>Sent:</b> Sunday, July 9, 2017 4:12 PM<br><b>Subject:</b> Re: [PSUBS-MAILIST] Pressure Test</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3673"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3672"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3671"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3670"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Greg,</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499630532547_3250"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">That was my original plan, I think it is a great idea for a shallow diver. But if your going real deep then chances are it will be lowered into the water from a boat or barge, so need for the swivel. If I end up being less ambitious, and build an Elementary 7,500 I will do just that.</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499630532547_3250"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Hank</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10187"><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;"> </span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3678"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3677"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3676"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yqt89970"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3675"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Arial", sans-serif;color:black;">On Sunday, July 9, 2017 1:57 PM, james cottrell via Personal_Submersibles <<a rel="nofollow" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs. org</a>> wrote:</span><span style="font-family:"Helvetica", sans-serif;color:black;"></span></div></div><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;"> </span></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3681"><div id="yiv2194395872m_-8062362793588594983yiv0466071481"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3680"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3679"><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Verdana", sans-serif;color:black;">Hank,</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Verdana", sans-serif;color:black;"> </span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Verdana", sans-serif;color:black;">I was thinking that it might be possible to mount a sphere within a steel frame that allows it to swivel up and down like a gun turret in a bomber. That way, the forward viewport could be incorporated into the hatch and the hatch/ port could be in the "up" position to get in and out and then in the "down" position during the dive for viewing. All internal components could be mounted on an internal frame that hangs from a bearing so that the pilot is always upright. The main ballast system could be a pair of port/ starboard pontoons.</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Verdana", sans-serif;color:black;"> </span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Verdana", sans-serif;color:black;">For a shallow diving sub, the hatch/ port could be a large dome for good viewing. A self draining "sail" could also be added around the hatch/ port. If Darth Vader had a sub it would look like that one!</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Verdana", sans-serif;color:black;"> </span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150"><div class="yiv2194395872MsoNormal" style="background:white;"><span style="font-size:10.0pt;font-family:"Verdana", sans-serif;color:black;">Greg</span></div></div><div id="yiv2194395872m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3742"><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-size:10.0pt;font-family:"Verdana", sans-serif;color:black;"> </span></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></blockquote></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><div class="yiv2194395872MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="font-family:"Helvetica", sans-serif;color:black;">_______________________________________________<br>Personal_Submersibles mailing list<br><a rel="nofollow" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a rel="nofollow" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br></span></div></div></div></div></div></div></div></div></div>_______________________________________________<br>Personal_Submersibles mailing list<br><a ymailto="mailto:Personal_Submersibles@psubs.org" href="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>