<font color='black' size='3' face='Arial, Helvetica, sans-serif'><font size="3">The bad news is that viewports don't make loud noises if they are properly annealed, correctly fit, and adequately lubricated. In fact, they don't make ANY noise. The only exception that I can think of is 1601. The dome viewport in that boat had a sweet spot on its orientation. If assembled with the marks aligned, it was silent. If installed differently, it would be noisy. Weird. I will say though that I have never used a viewport that landed on anything but steel (except for the JSLs). Maybe the plastic or rubber landing materials you are using is creating some noise? </font>
<div><font size="3">Vance<br>
</font><br>
<br>
<div style="font-size: 10pt; font-family: helvetica, arial; color: black;">-----Original Message-----<br>
From: Alan James via Personal_Submersibles <personal_submersibles@psubs.org><br>
To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><br>
Sent: Tue, Jul 7, 2015 10:27 pm<br>
Subject: Re: [PSUBS-MAILIST] calculation<br>
<br>
<div id="AOLMsgPart_1.2_199fcf75-9b51-42c2-a838-fc2a1fa4df8e">
<div class="aolReplacedBody">
<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 <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br>
<b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <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" target="_blank" href="mailto:swaters@waters-ks.com">swaters@waters-ks.com</a> via Personal_Submersibles <
<a shape="rect" target="_blank" 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" target="_blank" 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" target="_blank" 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" target="_blank" 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" target="_blank" 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" target="_blank" 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" target="_blank" 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" target="_blank" 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" target="_blank" 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" target="_blank" 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" target="_blank" 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" target="_blank" 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" target="_blank" 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" target="_blank" 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" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<br clear="none">
<br clear="none">
<a shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">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" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<br clear="none">
<br clear="none">
<a shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">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" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<br clear="none">
<br clear="none">
<a shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">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" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<br clear="none">
<a shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">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" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<br clear="none">
<a shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">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" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<br clear="none">
<a shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">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" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<br clear="none">
<a shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">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" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<br clear="none">
<a shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a>
</div>
<br>
<br>
</div>
</div>
</div>
</div>
</div>
</div>
<div id="AOLMsgPart_2_90419ea9-365c-4e70-a72d-44c6388beb25" style="margin: 0px;font-family: Tahoma, Verdana, Arial, Sans-Serif;font-size: 12px;color: #000;background-color: #fff;">
<pre style="font-size: 9pt;"><tt>_______________________________________________
Personal_Submersibles mailing
list
<a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a>
</tt></pre>
</div>
<!-- end of AOLMsgPart_2_90419ea9-365c-4e70-a72d-44c6388beb25 -->
</div>
</div>
</font>