<html><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_1_1436320717403_2714"><span id="yui_3_16_0_1_1436320717403_2728">Scott, </span></div><div id="yui_3_16_0_1_1436320717403_2714" dir="ltr"><span>thanks for filling in the details.</span></div><div id="yui_3_16_0_1_1436320717403_2714" dir="ltr"><span id="yui_3_16_0_1_1436320717403_4471">Hank, all the best with the dive test /diving.</span></div><div id="yui_3_16_0_1_1436320717403_2714" dir="ltr"><span id="yui_3_16_0_1_1436320717403_4472">Wonder if Vance has experienced those loud noises </span></div><div id="yui_3_16_0_1_1436320717403_2714" dir="ltr"><span>from shifting view ports?</span></div><div id="yui_3_16_0_1_1436320717403_2714" dir="ltr"><span>Alan</span></div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1436320717403_4908"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1436320717403_4907"> <div dir="ltr" id="yui_3_16_0_1_1436320717403_4906"> <hr size="1"> <font size="2" face="Arial" id="yui_3_16_0_1_1436320717403_4909"> <b><span style="font-weight:bold;">From:</span></b> hank pronk 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> Wednesday, July 8, 2015 10:59 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] calculation<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1436320717403_4910"><br><br clear="none">Alan,<br clear="none">I am starting slip testing tomorrow, I just bonded the gasket to the test chamber.<br clear="none">As for testing the sub, I am using my barge with winch to lower the sub with my video camera recording. I will turn the radio on and talk to the sub from the surface. I will tell the sub the depth constantly and it will be recorded. <br clear="none">Hope to do this next week, it is a big effort, I have to truck the barge 6 hr to the lake, then drive home, then come the next day with the sub. Maybe my wife will let me haul her car with the barge on the trailer so I can get home. :-)<br clear="none">Hank --------------------------------------------<br clear="none">On Tue, 7/7/15, <a shape="rect" ymailto="mailto:swaters@waters-ks.com" href="mailto:swaters@waters-ks.com">swaters@waters-ks.com</a> via Personal_Submersibles <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"> Subject: Re: [PSUBS-MAILIST] calculation<br clear="none"> To: "Personal Submersibles General Discussion" <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Tuesday, July 7, 2015, 6:01 PM<br clear="none"> <br clear="none"> Alan,When<br clear="none"> I was down diving with Karl Stanley earlier this year he<br clear="none"> showed me the veiwport that cracked. It was caused by him<br clear="none"> taking his sub to deep and the body warped putting side<br clear="none"> pressure on the veiwport. After that he derated his depth.<br clear="none"> This was on his first sub<br clear="none"> CBUG.Thanks,Scott Waters<br clear="none"> <br clear="none"> Sent from my U.S.<br clear="none"> Cellular® Smartphone<br clear="none"> <br clear="none"> -------- Original message<br clear="none"> --------<br clear="none"> From: Alan James via<br clear="none"> Personal_Submersibles<br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"> Date:07/07/2015 4:27 PM (GMT-06:00) <br clear="none"> To: Personal Submersibles General Discussion<br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"> Cc:<br clear="none"> <br clear="none"> Subject: Re: [PSUBS-MAILIST] calculation<br clear="none"> <br clear="none"> <br clear="none"> Hank,I remember<br clear="none"> Karl Stanley (or someone else) saying he cracked a dome at<br clear="none"> depthdue to an<br clear="none"> unexpected contraction of the pressure hull.Just in<br clear="none"> case everything is not right; how about an unmanned<br clear="none"> dive!You could<br clear="none"> record any noises by putting something like your cel phone<br clear="none"> in the hullon<br clear="none"> record.Then<br clear="none"> synchronize a watch on the support boat & record what<br clear="none"> depths you havethe sub<br clear="none"> down at at what times. So if you get a big "Crack"<br clear="none"> on your recording you will be<br clear="none"> able to tell at what depth it happened.Easier<br clear="none"> said than done I know, but probably worth it.Cheers<br clear="none"> Alan <br clear="none"> From: hank pronk via<br clear="none"> Personal_Submersibles<br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> To: Personal<br clear="none"> Submersibles General Discussion<br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"> <br clear="none"> Sent:<br clear="none"> Wednesday, July 8, 2015 12:26 AM<br clear="none"> Subject: Re:<br clear="none"> [PSUBS-MAILIST] calculation<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Alan,<br clear="none"> When my<br clear="none"> dome made the mystery noise, I was at 100 feet deep. That<br clear="none"> puts about 18 tons on the dome. I think it was either the<br clear="none"> straps were able to relax and find their happy place, or,<br clear="none"> the super cold water made the dome contract.<br clear="none"> Hank--------------------------------------------<br clear="none"> On Mon, 7/6/15, Alan James via<br clear="none"> Personal_Submersibles <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> Subject: Re:<br clear="none"> [PSUBS-MAILIST] calculation<br clear="none"> To:<br clear="none"> "Personal Submersibles General Discussion" <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Monday, July 6, 2015, 9:00 PM<br clear="none"> <br clear="none"> Hank,I was<br clear="none"> <br clear="none"> looking at some Deep Worker photos. The dome retaining<br clear="none"> bandslook like<br clear="none"> they can be<br clear="none"> wound tight from a central point at the<br clear="none"> <br clear="none"> top.I am<br clear="none"> wondering if they pre stress these<br clear="none"> significantly so that<br clear="none"> there is less<br clear="none"> movementwhen they<br clear="none"> are compressed at<br clear="none"> depth. <br clear="none"> Also I<br clear="none"> commented<br clear="none"> on your retaining system when I first saw it, that<br clear="none"> I thought thevertical<br clear="none"> <br clear="none"> floatational force might move it upward, or the dome<br clear="none"> pivot<br clear="none"> out from the bottom.Perhaps<br clear="none"> you could exert more pressure on the dome with<br clear="none"> your clamping<br clear="none"> system?<br clear="none"> <br clear="none"> Alan<br clear="none"> <br clear="none"> From:<br clear="none"> Alec Smyth via<br clear="none"> Personal_Submersibles<br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> To: Personal<br clear="none"> Submersibles General Discussion<br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> <br clear="none"> Sent: Tuesday,<br clear="none"> July 7, 2015 12:31 PM<br clear="none"> <br clear="none"> Subject: Re:<br clear="none"> [PSUBS-MAILIST] calculation<br clear="none"> <br clear="none"> <br clear="none"> Does<br clear="none"> the<br clear="none"> window seat have some sort of inside<br clear="none"> diameter edge? I would<br clear="none"> think if it does<br clear="none"> not, then its pretty much guaranteed to<br clear="none"> <br clear="none"> slip with or without grease - with grease being the<br clear="none"> quieter<br clear="none"> less-terrifying option.<br clear="none"> Best,<br clear="none"> Alec<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> On Mon,<br clear="none"> <br clear="none"> Jul 6, 2015 at 6:50 PM, hank pronk via<br clear="none"> Personal_Submersibles<br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> <br clear="none"> Sean,<br clear="none"> <br clear="none"> Thank<br clear="none"> you for the input, I think I will just use weights<br clear="none"> like Alan says.<br clear="none"> <br clear="none"> I am making a fixture to simulate the EPDM<br clear="none"> gasket compressed<br clear="none"> under my dome. I want<br clear="none"> to test it with grease and<br clear="none"> without. I<br clear="none"> will squeeze the gasket in the fixture then<br clear="none"> <br clear="none"> push the top plate sideways with a pusher bolt to see if<br clear="none"> the<br clear="none"> gasket allows movement. I want to<br clear="none"> make sure my dome can<br clear="none"> expand and contract<br clear="none"> at depth.<br clear="none"> <br clear="none"> Hank<br clear="none"> <br clear="none"> <br clear="none"> --------------------------------------------<br clear="none"> <br clear="none"> On Mon, 7/6/15, Sean T.<br clear="none"> Stevenson via Personal_Submersibles<br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Subject: Re:<br clear="none"> [PSUBS-MAILIST] calculation<br clear="none"> <br clear="none"> To: "Personal Submersibles General<br clear="none"> Discussion"<br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> Received: Monday, July 6,<br clear="none"> 2015, 9:08 AM<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Hank - the force developed<br clear="none"> is dependent on the<br clear="none"> <br clear="none"> <br clear="none"> stiffness of both the bolt material and of the specimen<br clear="none"> <br clear="none"> you're pushing on. <br clear="none"> You can't necessarily<br clear="none"> equate<br clear="none"> <br clear="none"> this directly to torque<br clear="none"> because of friction in the bolt<br clear="none"> <br clear="none"> threads and at the bolt end contact, and of<br clear="none"> course the<br clear="none"> <br clear="none"> elasticity<br clear="none"> of the bolt itself. You can only estimate<br clear="none"> <br clear="none"> it. <br clear="none"> <br clear="none"> There are many<br clear="none"> online tools for calculating the<br clear="none"> <br clear="none"> developed<br clear="none"> <br clear="none"> tensile force<br clear="none"> in a bolted connection, for example, but<br clear="none"> <br clear="none"> these<br clear="none"> <br clear="none"> consider only the<br clear="none"> bolt as the deformable element, and<br clear="none"> <br clear="none"> require an accurate estimate of coefficients<br clear="none"> of<br clear="none"> friction,<br clear="none"> <br clear="none"> and this will change with lubrication. As<br clear="none"> you complicate<br clear="none"> the<br clear="none"> <br clear="none"> system, it becomes more geometry<br clear="none"> dependent.<br clear="none"> <br clear="none"> A 1" -<br clear="none"> 8 UNC 2A thread is 8 threads per<br clear="none"> <br clear="none"> inch, so a set number of turns will give you<br clear="none"> the<br clear="none"> approximate<br clear="none"> <br clear="none"> axial displacement (0.125" per<br clear="none"> revolution -<br clear="none"> approximate<br clear="none"> <br clear="none"> <br clear="none"> because the bolt will change length<br clear="none"> under load). If you<br clear="none"> <br clear="none"> <br clear="none"> assume a rigid fixture, then your strain is equal to<br clear="none"> the<br clear="none"> <br clear="none"> <br clear="none"> overall change in length (calculated from # of bolt<br clear="none"> turns),<br clear="none"> <br clear="none"> <br clear="none"> divided by the gauge length (distance over which the<br clear="none"> length<br clear="none"> <br clear="none"> <br clear="none"> change occurs, which would be the length of your<br clear="none"> specimen<br clear="none"> <br clear="none"> <br clear="none"> measured between the rigid fixture and the end of your<br clear="none"> jack<br clear="none"> <br clear="none"> <br clear="none"> bolt). Compressive or tensile load is then calculated<br clear="none"> based<br clear="none"> <br clear="none"> on<br clear="none"> the modulus of elasticity of the specimen. <br clear="none"> <br clear="none"> Alternatively, you can<br clear="none"> measure the load (make the bolt<br clear="none"> or<br clear="none"> <br clear="none"> fixture into a load cell<br clear="none"> or strain gauge the specimen)<br clear="none"> and<br clear="none"> <br clear="none"> calculate the material<br clear="none"> properties.<br clear="none"> <br clear="none"> Load, axial<br clear="none"> displacement, modulus. You need any<br clear="none"> <br clear="none"> two to calculate the third.<br clear="none"> <br clear="none"> <br clear="none"> What are you making / testing?<br clear="none"> <br clear="none"> Sean<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> On July<br clear="none"> 6, 2015 6:26:49 AM<br clear="none"> <br clear="none"> MDT,<br clear="none"> hank pronk via Personal_Submersibles<br clear="none"> <br clear="none"> <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> Hi<br clear="none"> all,<br clear="none"> <br clear="none"> I<br clear="none"> <br clear="none"> <br clear="none"> need help, can anyone tell me how to<br clear="none"> calculate how much<br clear="none"> <br clear="none"> <br clear="none"> force a bolt can push or pull using a torque wrench to<br clear="none"> turn<br clear="none"> <br clear="none"> the<br clear="none"> bolt. So how many foot pounds of torque does it take<br clear="none"> to<br clear="none"> <br clear="none"> rotate<br clear="none"> a bolt to create 250 lbs push with a 1 in<br clear="none"> <br clear="none"> coarse<br clear="none"> <br clear="none"> thread bolt. I<br clear="none"> need to make a test fixture.<br clear="none"> <br clear="none"> Hank<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Personal_Submersibles<br clear="none"> mailing<br clear="none"> list<br clear="none"> <br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> -----Inline Attachment Follows-----<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> <br clear="none"> Personal_Submersibles<br clear="none"> mailing<br clear="none"> list<br clear="none"> <br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> <br clear="none"> Personal_Submersibles<br clear="none"> mailing<br clear="none"> list<br clear="none"> <br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><div class="qtdSeparateBR"><br><br></div><div class="yqt2817092137" id="yqtfd72904"><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> -----Inline Attachment<br clear="none"> Follows-----<br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> -----Inline Attachment Follows-----<br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> <br clear="none"><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></div><br><br></div> </div> </div> </div></body></html>