<div dir="ltr"><div>Ah ok Hank, cool.</div><div><br></div><div>The trouble with the composite tanks underwater is that when they are pressurised they expand slightly and this can open any cracks in the epoxy (which is only there to support the fibres giving tensile strength). If you then take them underwater, the external pressure forces water into the cracks, and it can then sit there and do weird things - like corroding the interal alumninium liner.</div><div><br></div><div>They are pretty robust though, and I destroyed 3 (albeit new) cylinders after various saltwater and mechanical punishment, none of which failed badly. Frequent hydrostatic tests was the best I could come up with for seeing whether one is about to explode - obviously this is not ideal, and there's no data on how quickly corrosion can reduce the strength of the cylinder to the point of failure.</div><div><br></div><div>There is some empirical data from composite SCUBA tanks in use over time. The standards really don't go into much fine detail - they just specify one (rather arbitrary) test to do for a cylinder to be used underwater.</div><div><br></div><div>Cheers,</div><div>Steve</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Jul 10, 2017 at 12:49 PM, hank pronk via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="color:rgb(0,0,0);font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><div><span>Steve,</span></div><div><span>Greg was referring to steel cng storage tanks that are 48 inch ID spheres 3.25 inches thick. </span></div><div><span>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><span>Hank</span></div> <div class="m_-9183719998080880236qtdSeparateBR"><br><br></div><div class="m_-9183719998080880236yahoo_quoted" style="display:block"> <div style="font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"><span> <div dir="ltr"><font face="Arial" size="2"> On Sunday, July 9, 2017 8:44 PM, Stephen Fordyce via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.<wbr>org</a>> wrote:<br></font></div> <br><br> </span><div class="m_-9183719998080880236y_msg_container"><div id="m_-9183719998080880236yiv9059787370"><div><span><div dir="ltr"><div>Hi Hank,</div><div>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.</div><div><br clear="none"></div><div>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.</div><div><br clear="none"></div><div>Cheers,</div><div>Steve</div></div></span><div class="m_-9183719998080880236yiv9059787370gmail_extra"><br clear="none"><div class="m_-9183719998080880236yiv9059787370gmail_quote"><span>On Mon, Jul 10, 2017 at 11:53 AM, hank pronk via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs.<wbr>org</a>></span> wrote:<br clear="none"></span><blockquote class="m_-9183719998080880236yiv9059787370gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div class="m_-9183719998080880236yiv9059787370yqt8612899619" id="m_-9183719998080880236yiv9059787370yqt90275"><div><div style="color:rgb(0,0,0);font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yui_3_16_0_ym19_1_1499651473443_3360"><span>I use the calculator on Psubs written by Alec, it is </span>fabulous because you change the values for different materials. </div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yui_3_16_0_ym19_1_1499651473443_3361">Hank</div></span><div><div class="m_-9183719998080880236yiv9059787370h5"> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983qtdSeparateBR"><br clear="none"><br clear="none"></div><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yahoo_quoted" style="display:block"> <div style="font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"><span> <div dir="ltr"><font face="Arial" size="2"> On Sunday, July 9, 2017 7:17 PM, james cottrell via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>> wrote:<br clear="none"></font></div> <br clear="none"><br clear="none"> </span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983y_msg_container"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481"><div><div style="color:rgb(0,0,0);font-family:verdana,helvetica,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_9903"><span id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10050">I still think that a CNG sphere will go way deeper. How did you calculate that?</span></div><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481qtdSeparateBR" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10051"><br clear="none"><br clear="none"></div></span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo_quoted" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10057" style="display:block"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10056" style="font-family:verdana,helvetica,sans-serif;font-size:13px"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10055" style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt8784018445" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt05911"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10054" dir="ltr"> <font id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10053" face="Arial" size="2"> </font><hr size="1" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10052"> <b><span style="font-weight:bold">From:</span></b> hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>><br clear="none"> <b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>> <br clear="none"> <b><span style="font-weight:bold">Sent:</span></b> Sunday, July 9, 2017 4:38 PM<br clear="none"> <b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] Pressure Test<br clear="none"> </div> </span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481y_msg_container" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10099"><br clear="none"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10101"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10100" style="color:rgb(0,0,0);font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10111"><span>Very true.</span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499630532547_20107" dir="ltr"><span id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499630532547_20272">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 id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499630532547_20107" dir="ltr"><span>Hank</span></div> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481qtdSeparateBR" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10102"><br clear="none"><br clear="none"></div></span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo_quoted" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10107" style="display:block"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10106" style="font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10105" style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt7033326313" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt64388"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10104" dir="ltr"><font id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10103" face="Arial" size="2"> On Sunday, July 9, 2017 2:26 PM, james cottrell via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>> wrote:<br clear="none"></font></div> <br clear="none"><br clear="none"> </span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481y_msg_container" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10110"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10109"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10108" style="color:rgb(0,0,0);font-family:verdana,helvetica,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3575"><span id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3659">Yes....BUT...being able to get out on your own is never a bad thing.</span></div><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481qtdSeparateBR" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3593"><br clear="none"><br clear="none"></div></span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo_quoted" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3669" style="display:block"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3668" style="font-family:verdana,helvetica,sans-serif;font-size:13px"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3667" style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt3307982872" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt91755"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3666" dir="ltr"><span> <font face="Arial" size="2"> </font><hr size="1"> <b><span style="font-weight:bold">From:</span></b> hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>><br clear="none"> </span><span><b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>> <br clear="none"> </span><span><b><span style="font-weight:bold">Sent:</span></b> Sunday, July 9, 2017 4:12 PM<br clear="none"> <b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] Pressure Test<br clear="none"> </span></div> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481y_msg_container" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3673"><br clear="none"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3672"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3671" style="color:rgb(0,0,0);font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3670"><span>Greg,</span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499630532547_3250"><span id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499630532547_3249">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 id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499630532547_3250"><span>Hank</span></div> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481qtdSeparateBR" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499649104847_10187"><br clear="none"><br clear="none"></div></span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo_quoted" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3678" style="display:block"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3677" style="font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3676" style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt0270487542" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt89970"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3675" dir="ltr"><font id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3674" face="Arial" size="2"> On Sunday, July 9, 2017 1:57 PM, james cottrell via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>> wrote:<br clear="none"></font></div> <br clear="none"><br clear="none"> </span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481y_msg_container" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3681"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3680"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3679" style="color:rgb(0,0,0);font-family:verdana,helvetica,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150">Hank,</div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150"><br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150">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.</div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150"><br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150">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!</div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150"><br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3150">Greg</div><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481qtdSeparateBR" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3742"><br clear="none"><br clear="none"></div></span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo_quoted" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3746" style="display:block"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3745" style="font-family:verdana,helvetica,sans-serif;font-size:13px"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3744" style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt8590321508" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt11453"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3743" dir="ltr"><span> <font id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3748" face="Arial" size="2"> </font><hr size="1" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_3747"> <b><span style="font-weight:bold">From:</span></b> hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>><br clear="none"> </span><span><b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>> <br clear="none"> </span><span><b><span style="font-weight:bold">Sent:</span></b> Sunday, July 9, 2017 3:27 PM<br clear="none"> <b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] Pressure Test<br clear="none"> </span></div> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481y_msg_container" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4356"><br clear="none"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4358"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4357" style="color:rgb(0,0,0);font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499627419024_3398"><span>Greg,</span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499627419024_3329" dir="ltr"><span id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499627419024_3328">Not a bad idea. I have lots of time, I still need to finish Elementary 3000. I am not planning to buy heads until fall of 2018. I only bought the vertical lathe because I got a SMOKIN deal and what are the chances of finding another machine like that in the Canadian prairies. </span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499627419024_3329" dir="ltr"><span>Hank</span></div> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481qtdSeparateBR" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4359"><br clear="none"><br clear="none"></div></span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo_quoted" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4362" style="display:block"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4361" style="font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4360" style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt9229896920" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt90503"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3683" dir="ltr"><font id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499631641198_3682" face="Arial" size="2"> On Sunday, July 9, 2017 12:23 PM, james cottrell via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>> wrote:<br clear="none"></font></div> <br clear="none"><br clear="none"> </span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481y_msg_container" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4365"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4364"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4363" style="color:rgb(0,0,0);font-family:verdana,helvetica,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3672"><span id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3787">Hank,</span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3672"><span><br clear="none"></span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3672"><span id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3788">You may want to contact these guys before spending a lot of $$$</span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3672"><span><br clear="none"></span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3672" dir="ltr"><span id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3799"><a class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481enhancr2_5c62bac8-60c7-188a-4615-d13661fa48fb" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3798" href="http://www.austpvheads.com.au/" target="_blank" rel="nofollow" shape="rect">Australia Pressure Vessel Heads 2011 Pty Ltd</a><br clear="none"></span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4366"><br clear="none"></div><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo-link-enhancr-card m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo-link-enhancr-not-allow-cover m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481ymail-preserve-class m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481ymail-preserve-style" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481enhancr2_5c62bac8-60c7-188a-4615-d13661fa48fb" dir="ltr"> <a class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo-enhancr-cardlink" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4375" style="color:rgb(0,0,0);text-decoration:none" href="http://www.austpvheads.com.au/" target="_blank" rel="nofollow" shape="rect"> <table class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481card-wrapper" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4374" style="max-width:400px" border="0" cellspacing="0" cellpadding="0"><tbody id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4373"><tr id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4372"><td width="400" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4371" rowspan="1" colspan="1"> <table width="100%" class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481card-info" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4370" 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);max-width:400px" border="0" cellspacing="0" cellpadding="0"><tbody id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4369"><tr id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4368"><td style="padding:16px 0px 16px 12px;vertical-align:top" rowspan="1" colspan="1"> </td><td id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499629315211_4367" style="padding:16px 12px;width:99%;vertical-align:middle" rowspan="1" colspan="1"> <h2 class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481card-title" style="margin:0px 0px 4px">Australia Pressure Vessel Heads 2011 Pty Ltd</h2> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481card-description" style="color:rgb(153,153,153);line-height:15px;font-size:11px"></div> </td><td class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481card-share-container" rowspan="1" colspan="1"></td></tr></tbody></table> </td></tr></tbody></table> </a></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3834"><br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3672" dir="ltr"><br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3672" dir="ltr">Greg C</div><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481qtdSeparateBR" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3671"><br clear="none"><br clear="none"></div></span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo_quoted" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3793" style="display:block"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3792" style="font-family:verdana,helvetica,sans-serif;font-size:13px"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3791" style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt4754463628" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt82599"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3790" dir="ltr"><span> <font id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3833" face="Arial" size="2"> </font><hr size="1" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3832"> <b><span style="font-weight:bold">From:</span></b> hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>><br clear="none"> </span><span><b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>> <br clear="none"> </span><span><b><span style="font-weight:bold">Sent:</span></b> Sunday, July 9, 2017 1:23 PM<br clear="none"> <b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] Pressure Test<br clear="none"> </span></div> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481y_msg_container" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3835"><br clear="none"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3838"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3837" style="color:rgb(0,0,0);font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3836"><span>Greg,</span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499620499683_3563"><span id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499620499683_3562">Hmmm, just googled EN 26 and it considered machinable even hardened and tempered, but what does that mean? </span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499620499683_3563"><span>Hank</span></div> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481qtdSeparateBR" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3839"><br clear="none"><br clear="none"></div></span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo_quoted" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3844" style="display:block"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3843" style="font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3842" style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt6897122831" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt65641"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3841" dir="ltr"><font id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3840" face="Arial" size="2"> On Sunday, July 9, 2017 11:12 AM, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>> wrote:<br clear="none"></font></div> <br clear="none"><br clear="none"> </span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481y_msg_container" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3847"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3846"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3845" style="color:rgb(0,0,0);font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499619231835_4642"><span>Greg,</span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499619231835_4479" dir="ltr"><span id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499619231835_4639">I asked EE if they could make HY heads and they can but need a quenching tank. I can not find a supplier that can supply large enough pieces of HY steel to press a hemispherical head. EE does not supply anything but 516-70 . I can ask them but would need to source the material first. I would need to be sure I can even machine that material, I kinda doubt it? </span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499619231835_4479" dir="ltr">Hank</div> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481qtdSeparateBR" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3848"><br clear="none"><br clear="none"></div></span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo_quoted" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3853" style="display:block"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3852" style="font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3851" style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt2801707490" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt80357"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3850" dir="ltr"><font id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3849" face="Arial" size="2"> On Sunday, July 9, 2017 10:36 AM, james cottrell via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>> wrote:<br clear="none"></font></div> <br clear="none"><br clear="none"> </span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481y_msg_container" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3856"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3855"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499624473285_3854" style="color:rgb(0,0,0);font-family:verdana,helvetica,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3303"><span>Hank,</span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3303"><span><br clear="none"></span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3303"><span id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3399">Do you know if EE can fabricate your hull from EN26 steel? The hull that Ron A. had fabricated was only 2.5" thick and went full ocean depth with plenty of safety factor. Using the same grade steel in a thickness designed for only 13,000 ft might save a lot of weight.</span></div><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481qtdSeparateBR" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3417"><br clear="none"></div><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481qtdSeparateBR" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3417">Greg C<br clear="none"><br clear="none"></div></span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo_quoted" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3567" style="display:block"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3566" style="font-family:verdana,helvetica,sans-serif;font-size:13px"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3565" style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt2279124024" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt92798"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3564" dir="ltr"><span> <font id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3563" face="Arial" size="2"> </font><hr size="1" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3562"> <b><span style="font-weight:bold">From:</span></b> hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>><br clear="none"> </span><span><b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>> <br clear="none"> </span><span><b><span style="font-weight:bold">Sent:</span></b> Monday, June 26, 2017 7:54 AM<br clear="none"> <b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] Pressure Test<br clear="none"> </span></div> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481y_msg_container" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3633"><br clear="none"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3635"><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3634" style="color:rgb(0,0,0);font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1498476782388_5708"><span></span></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1498476782388_5708" dir="ltr">Alan,</div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1498476782388_5708" dir="ltr">That really turned out nice, how did you mould the polyurethane? that stuff sticks like mad. </div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1498476782388_5708" dir="ltr">I would leave the white gasket, it looks fine. Either the gasket thickness is not even or the seat is not perfectly matched to the Lenz.</div> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481qtdSeparateBR" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3636"><br clear="none"><br clear="none"></div></span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yahoo_quoted" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3641" style="display:block"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3640" style="font-family:Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:13px"> <div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3639" style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt9842432104" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqtfd01693"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3638" dir="ltr"><font id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3637" face="Arial" size="2"> On Sunday, June 25, 2017 10:30 PM, Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">personal_submersibles@psubs. org</a>> wrote:<br clear="none"></font></div> <br clear="none"><br clear="none"> </span><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481y_msg_container" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3643"><span><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3642" dir="ltr">Pressure tested my light to 1000 psi for an hour using the water blaster <br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3644" dir="ltr">& no leaks! I didn't have a pressure relief valve in the system as I do with<br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3645" dir="ltr">my air pressure set up & it was a pain getting the chamber lid off. I had<br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3646" dir="ltr">thought the water blaster would have leaked a bit of pressure but it didn't.<br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3647" dir="ltr">The sealing system for the wires was a 3 layered process; encapsulating the<br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3648" dir="ltr">wires in the epoxy, then coating the insulation for an inch up from where they came <br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3649" dir="ltr">out of the epoxy, & over the epoxy with a 2 part heat activated pvc glue that <br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3650" dir="ltr">they use on inflatable boats. This glue worked a lot better on the pvc insulation<br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3651" dir="ltr">than several others I tried like E61000 (supposed to be better than shoe goo),<br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3652" dir="ltr">3M 5200 & polyurethane.<br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3653" dir="ltr">Over this, to tidy it up & act as a cable support, I moulded polyurethane.<br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3654" dir="ltr">In the attached photos the white ptfe gasket that the lens sits on looks wet<br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3655" dir="ltr">but it is just the compression of the lens against the gasket. I don't like this<br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3656" dir="ltr">from a cosmetic point & may change it. The 2 objects with the light are the<br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3657" dir="ltr">male mould for the polyurethane cable support & the silicone mould for the <br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3658" dir="ltr">same.<br clear="none"></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yui_3_16_0_ym19_1_1499617724890_3659" dir="ltr">Alan</div><br clear="none"><br clear="none"><br clear="none"></span><div><div class="h5">Sent from my iPad__________________________ _____________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">Personal_Submersibles@psubs. org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/ listinfo.cgi/personal_ submersibles</a><br clear="none"><br clear="none"><br clear="none"></div></div></div> </div></div><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt9842432104" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqtfd04066"> </div></div><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt9842432104" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqtfd13124"> </div></div></div></div></div><div><div class="h5"><div class="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqt9842432104" id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481yqtfd49853">______________________________ _________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect">Personal_Submersibles@psubs. org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/ listinfo.cgi/personal_ submersibles</a><br clear="none"></div><br clear="none"><br clear="none"></div></div></div></div> </div> </div> </div></div><div id="m_-9183719998080880236yiv9059787370m_-8062362793588594983yiv0466071481DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br clear="none">
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<br clear="none"></div></div></blockquote></div><br clear="none"></div></div></div><span><div class="m_-9183719998080880236yqt8612899619" id="m_-9183719998080880236yqt79195">______________________________<wbr>_________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" shape="rect">Personal_Submersibles@psubs.<wbr>org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" shape="rect">http://www.psubs.org/mailman/<wbr>listinfo.cgi/personal_<wbr>submersibles</a><br clear="none"></div><br><br></span></div> </div> </div> </div></div></div><br>______________________________<wbr>_________________<br>
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