<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1461892493799_4036"><span id="yui_3_16_0_ym19_1_1461892493799_4072">Thanks Hugh,</span></div><div id="yui_3_16_0_ym19_1_1461892493799_4031" dir="ltr"><span id="yui_3_16_0_ym19_1_1461892493799_5514">I am wavering; I had ideas of welding fins on to the central</span></div><div id="yui_3_16_0_ym19_1_1461892493799_5549" dir="ltr"><span id="yui_3_16_0_ym19_1_1461892493799_5573">section to support the kort nozzle & the plug may come in handy for that, </span></div><div id="yui_3_16_0_ym19_1_1461892493799_5650" dir="ltr"><span id="yui_3_16_0_ym19_1_1461892493799_5649">however with </span><span id="yui_3_16_0_ym19_1_1461892493799_5613">fins on I wouldn't be able to do post weld machining.</span></div><div id="yui_3_16_0_ym19_1_1461892493799_5743" dir="ltr"><span id="yui_3_16_0_ym19_1_1461892493799_5742">Might do the first housing as a bolt together & experiment with a welded</span></div><div id="yui_3_16_0_ym19_1_1461892493799_5744" dir="ltr"><span id="yui_3_16_0_ym19_1_1461892493799_5763">version later.</span></div><div id="yui_3_16_0_ym19_1_1461892493799_5745" dir="ltr"><span>Alan</span></div><div id="yui_3_16_0_ym19_1_1461892493799_5631" dir="ltr"><span></span><br></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1461892493799_4018"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1461892493799_5555" style="display: block;"> <div id="yui_3_16_0_ym19_1_1461892493799_5554" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1461892493799_5553" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1461892493799_5552" dir="ltr"> <font id="yui_3_16_0_ym19_1_1461892493799_5551" face="Arial" size="2"> <hr size="1" id="yui_3_16_0_ym19_1_1461892493799_5550"> <b><span style="font-weight: bold;">From:</span></b> Hugh Fulton 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> Friday, April 29, 2016 12:54 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Welding<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1461892493799_5764"><br><div id="yiv3515954964"><style>#yiv3515954964 #yiv3515954964 --
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#yiv3515954964 </style><div id="yui_3_16_0_ym19_1_1461892493799_5768"><div class="yiv3515954964WordSection1" id="yui_3_16_0_ym19_1_1461892493799_5767"><div class="yiv3515954964MsoNormal" id="yui_3_16_0_ym19_1_1461892493799_5766"><span id="yui_3_16_0_ym19_1_1461892493799_5765" style="font-size: 11pt;">I have spent half my life designing things to avoid welding.</span></div><div class="yiv3515954964MsoNormal" id="yui_3_16_0_ym19_1_1461892493799_5770"><span id="yui_3_16_0_ym19_1_1461892493799_5769" style="font-size: 11pt;">If you insist on welding then normally you should not have it butted up but a small gap so the weld doesn’t crack after cooling and contraction.</span></div><div class="yiv3515954964MsoNormal" id="yui_3_16_0_ym19_1_1461892493799_5772"><span id="yui_3_16_0_ym19_1_1461892493799_5771" style="font-size: 11pt;">Still think you need to allow for cleaning up for concentricity afterwards. You can check with a DTI. I prefer bolt together. Hugh</span></div><div id="yui_3_16_0_ym19_1_1461892493799_5774"><div class="yiv3515954964MsoNormal" id="yui_3_16_0_ym19_1_1461892493799_5773"><span lang="EN-NZ" style="font-size: 11pt;"> </span></div></div><div class="yiv3515954964MsoNormal" id="yui_3_16_0_ym19_1_1461892493799_5775"><span style="font-size: 11pt;"> </span></div><div class="yiv3515954964yqt7926085075" id="yiv3515954964yqt88143"><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(181, 196, 223) currentColor currentColor; padding: 3pt 0cm 0cm; border-image: none;"><div class="yiv3515954964MsoNormal"><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>Alan James via Personal_Submersibles<br clear="none"><b>Sent:</b> Friday, 29 April 2016 11:48 a.m.<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] Welding</span></div></div></div><div class="yiv3515954964MsoNormal"> </div><div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3030"><div class="yiv3515954964MsoNormal" style="background: white;"><span>Hugh,</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3010"><div class="yiv3515954964MsoNormal" style="background: white;"><span>went & talked with a welding specialist this morning who seemed to think</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_2984"><div class="yiv3515954964MsoNormal" style="background: white;"><span>the plug idea would be good. His only reservations were whether I could</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_2986"><div class="yiv3515954964MsoNormal" style="background: white;"><span>get the plug out afterward. I said it would be designed to be able to be</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_2987"><div class="yiv3515954964MsoNormal" style="background: white;"><span>pressed out.</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3008"><div class="yiv3515954964MsoNormal" style="background: white;"><span>The bearing seat is some distance from the welding & has a thick section</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3014"><div class="yiv3515954964MsoNormal" style="background: white;"><span>of aluminum between. See attachment (not dimensionally correct).</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3031"><div class="yiv3515954964MsoNormal" style="background: white;"><span>The plug should stop the tube section from distorting, shouldn't it.</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3058"><div class="yiv3515954964MsoNormal" style="background: white;"><span>I have 6 of these to make initially & it will be a lot less work if I can weld.</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3172"><div class="yiv3515954964MsoNormal" style="background: white;"><span>I need to go with the steel plug as an aluminum plug could get damaged</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3198"><div class="yiv3515954964MsoNormal" style="background: white;"><span>in the pressing process.</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3085"><div class="yiv3515954964MsoNormal" style="background: white;"><span>Am I convincing you or does this still get the thumbs down?</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3157"><div class="yiv3515954964MsoNormal" style="background: white;"><span>Cheers Alan</span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_2922"><div class="yiv3515954964MsoNormal" style="background: white; margin-bottom: 12pt;"><span> </span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_2947"><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_2946"><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_2945"><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_2944"><div align="center" class="yiv3515954964MsoNormal" style="background: white; text-align: center;"><span style="font-size: 10pt;"></span><hr width="100%" size="1" align="center"></div><div class="yiv3515954964MsoNormal" style="background: white;"><b id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3012"><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Hugh Fulton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"><b>To:</b> 'Personal Submersibles General Discussion' <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"><b>Sent:</b> Friday, April 29, 2016 8:55 AM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] Welding</span><span></span></div></div><div id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3086"><div class="yiv3515954964MsoNormal" style="background: white;"><span><br clear="none">Alan,<br clear="none">Stay away from welding or completely re-machine as Hank says otherwise you<br clear="none">will havev concentricity issues with the bearings etc.<br clear="none">Besides Aluminium will be a better heat sink than a steel insert. Hugh </span></div><div id="yiv3515954964yqtfd27368"><div class="yiv3515954964MsoNormal" style="background: white;"><span><br clear="none"><br clear="none"><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3136" href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a id="yiv3515954964yui_3_16_0_ym19_1_1461883649540_3137" 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></span></div></div><div class="yiv3515954964MsoNormal" style="background: white; margin-bottom: 12pt;"><span> </span></div></div></div></div></div></div></div></div></div></div><br><div class="yqt7926085075" id="yqt50293">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.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/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br><br></div> </div> </div> </div></div></body></html>