<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/><title></title></head><body><p 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 /></span></p>
<p 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></p>
<p 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></p>
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<p style="margin: 0px;"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:#000000;text-decoration:none">vbr Carsten <br /></span></p>
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<p style="margin: 0px;">Betreff: Re: [PSUBS-MAILIST] bolt on rings</p>
<p style="margin: 0px;">Datum: 2016-11-11T10:21:52+0100</p>
<p style="margin: 0px;">Von: "emile via Personal_Submersibles" <personal_submersibles@psubs.org></p>
<p style="margin: 0px;">An: "'Personal Submersibles General Discussion'" <personal_submersibles@psubs.org></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size: 11.0pt; font-family: 'Arial','sans-serif'; color: #1f497d;">Hank,</span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size: 11.0pt; font-family: 'Arial','sans-serif'; color: #1f497d;"> </span></p>
<p class="MsoNormal"><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></p>
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<p class="MsoNormal"><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></p>
<p class="MsoNormal"><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></p>
<p class="MsoNormal"><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></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size: 11.0pt; font-family: 'Arial','sans-serif'; color: #1f497d;">Emile</span></p>
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<p class="MsoNormal"><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 /><strong>Verzonden:</strong> vrijdag 11 november 2016 2:52<br /><strong>Aan:</strong> Personal Submersibles General Discussion<br /><strong>Onderwerp:</strong> [PSUBS-MAILIST] bolt on rings</span></p>
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<p class="MsoNormal" 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></p>
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<p class="MsoNormal" 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></p>
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<p class="MsoNormal" style="background: white;"><span style="font-size: 7.0pt; font-family: 'Helvetica','sans-serif'; color: black;">Hank</span></p>
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