<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div id="yui_3_16_0_ym19_1_1478868642883_5918"><span>Thanks' guys!</span></div><div id="yui_3_16_0_ym19_1_1478868642883_5918"><span id="yui_3_16_0_ym19_1_1478868642883_5967">Emile, I was thinking that I can not bolt to the curved surface, but ! was thinking I can machine the curve flat. </span></div><div id="yui_3_16_0_ym19_1_1478868642883_5918">Carsten, Good point, all the welding of brackets etc would have to be done first, then machining last.</div><div id="yui_3_16_0_ym19_1_1478868642883_5918"><br></div><div id="yui_3_16_0_ym19_1_1478868642883_5918" dir="ltr">I have a crazy idea to build a purpose built lathe for the hemispheres. </div><div id="yui_3_16_0_ym19_1_1478868642883_5918" dir="ltr">Hank</div><div id="yui_3_16_0_ym19_1_1478868642883_5918"><span><br></span></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> On Friday, November 11, 2016 3:59 AM, "MerlinSub@t-online.de via Personal_Submersibles" <personal_submersibles@psubs.org> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv3882662385"><title></title><div><div style="margin:0px;"><span style="font-family:arial, helvetica, sans-serif;font-size:10pt;color:#000000;text-decoration:none;">All Hatches on Euronaut are made this way. <br clear="none"></span></div>
<div style="margin:0px;"><span style="font-family:arial, helvetica, sans-serif;font-size:10pt;color:#000000;text-decoration:none;">Surfaces has to be machined - both sides. </span></div>
<div style="margin:0px;"><span style="font-family:arial, helvetica, sans-serif;font-size:10pt;color:#000000;text-decoration:none;">Welding of equipment, seams, holder bracket etc - closed to the machined surface is something to prevent. </span></div>
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<div style="margin:0px;"><span style="font-family:arial, helvetica, sans-serif;font-size:10pt;color:#000000;text-decoration:none;">vbr Carsten <br clear="none"></span></div>
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<div style="margin:0px;">Betreff: Re: [PSUBS-MAILIST] bolt on rings</div>
<div style="margin:0px;">Datum: 2016-11-11T10:21:52+0100</div>
<div class="yiv3882662385yqt1401399262" id="yiv3882662385yqt67303"><div style="margin:0px;">Von: "emile via Personal_Submersibles" <personal_submersibles@psubs.org></div>
<div style="margin:0px;">An: "'Personal Submersibles General Discussion'" <personal_submersibles@psubs.org></div>
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<div class="yiv3882662385MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:'Arial', 'sans-serif';color:#1f497d;">Hank,</span></div>
<div class="yiv3882662385MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:'Arial', 'sans-serif';color:#1f497d;"> </span></div>
<div class="yiv3882662385MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:'Arial', 'sans-serif';color:#1f497d;">Bolting somethin on a spher without welded reinforcing is normally no-go. </span></div>
<div class="yiv3882662385MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:'Arial', 'sans-serif';color:#1f497d;"> </span></div>
<div class="yiv3882662385MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:'Arial', 'sans-serif';color:#1f497d;">Connecting 2 hemi’s with a 0-ring should be possible with that thickness. Centring ring would be useful..</span></div>
<div class="yiv3882662385MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:'Arial', 'sans-serif';color:#1f497d;">Some hatch seals are made by just machine a 0-ring groove in a thick elliptical head.</span></div>
<div class="yiv3882662385MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:'Arial', 'sans-serif';color:#1f497d;">The sphere segments of one version of the Trieste were glued! The thick CrMo steel was impossible to weld.</span></div>
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<div class="yiv3882662385MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:'Arial', 'sans-serif';color:#1f497d;">Emile</span></div>
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<div class="yiv3882662385MsoNormal"><strong><span style="font-size:10.0pt;font-family:'Tahoma', 'sans-serif';">Van:</span></strong><span style="font-size:10.0pt;font-family:'Tahoma', 'sans-serif';"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <strong>Namens </strong>hank pronk via Personal_Submersibles<br clear="none"><strong>Verzonden:</strong> vrijdag 11 november 2016 2:52<br clear="none"><strong>Aan:</strong> Personal Submersibles General Discussion<br clear="none"><strong>Onderwerp:</strong> [PSUBS-MAILIST] bolt on rings</span></div>
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<div class="yiv3882662385MsoNormal" style="background:white;"><span style="font-size:7.0pt;font-family:'Helvetica', 'sans-serif';color:black;">Sean, I know we talked a bit about this idea before but I need a refresher. Can I machine a hole in a heavy sphere and insert a hatch land\reinforcing ring assembly that bolts to the sphere. It looks like Karl Stanley may have done that with his front dome. This idea if feasible makes building a deep diver more realistic. I am thinking of trying this on my current sphere just to see if I can do it. Better to screw up a cheap sphere first. ;-)</span></div>
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<div class="yiv3882662385MsoNormal" style="background:white;"><span style="font-size:7.0pt;font-family:'Helvetica', 'sans-serif';color:black;">Next question, when I look at the Deep Rover sub, it has two hemispherical domes coming together on a two sided land. I am sure the land also gives the domes side support. Why would this design not work with two heavy steel hemispherical domes. I am talking 3 to 4 inches thick. The steel domes can easily be machined with a flat land and o-ring grooves. The idea is to eliminate a very costly weld and it would be pretty darn nice to build with the top half of the hull removed. </span></div>
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<div class="yiv3882662385MsoNormal" style="background:white;"><span style="font-size:7.0pt;font-family:'Helvetica', 'sans-serif';color:black;">Hank</span></div>
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