<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_1_1468540366285_9442"><span id="yui_3_16_0_1_1468540366285_9441">With a conical window with a tD ratio of .5 or less it is i</span>mportant to have the gap at the high pressure side of the window. My window is tD .5 so the gap I have at the outer edge is allowed . I had the window seated (cast in place) as suggested by Karl Stanley, but I have since decided to go with acrylic on steel. I plan to have an ideal fit but that may prove too difficult. That is why I need to confirm my calculation, just to be sure I end up within the .25 degrees.</div><div id="yui_3_16_0_1_1468540366285_9442">Hank</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 Thursday, July 14, 2016 6:17 PM, Sean T. Stevenson via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv0684011204"><div><div dir="ltr">Given those tolerances, the window will seat at the outer diameter / face first, so zero conical clearance there, with the gap at the inner diameter. This will depend on the window thickness.</div>
<div dir="ltr">Sean<br clear="none">
</div>
<br clear="none"><br clear="none"><div class="yiv0684011204gmail_quote">On July 14, 2016 6:01:40 PM MDT, hank pronk via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<blockquote class="yiv0684011204gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex;">
<div class="yiv0684011204yqt6722500789" id="yiv0684011204yqt26152"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px;"><div id="yiv0684011204yui_3_16_0_1_1468540366285_3174"><span>Hi Sean,</span></div><div id="yiv0684011204yui_3_16_0_1_1468540366285_3197"><span id="yiv0684011204yui_3_16_0_1_1468540366285_3196">Yes that is what I am talking about, I realize that, and thought is was to big. I want to know if I am calculating the gap correctly. I have a .005in gap at the moment but have not polished the seat or lapped it in. By my calculations .25 degrees is .03in and that seems large also. That is why I ask</span></div><div id="yiv0684011204yui_3_16_0_1_1468540366285_3197"><span>Hank</span></div> <div class="yiv0684011204qtdSeparateBR"><br clear="none"><br clear="none"></div><div class="yiv0684011204yahoo_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, vetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div dir="ltr"><font size="2" face="Arial"> On Thursday, July 14, 2016 5:33 PM, Sean T. Stevenson via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br clear="none"></font></div> <br clear="none"><br clear="none"> <div class="yiv0684011204y_msg_container"><div id="yiv0684011204"><div><div dir="ltr">Hank - are you talking about a conical frustum viewport / seat combination? If so, two degrees is too loose. Major diameter of the window should be machined to +0.000/-0.002 *Do (nominal outer diameter), and the included conical angle within +0.25/-0.000 degrees of the nominal value. The included conical angle of the window seat should be within +0.000/-0.25 degrees of the nominal angle.</div>
<div dir="ltr">Sean<br clear="none">
</div>
<br clear="none"><br clear="none"><div class="yiv0684011204gmail_quote">On July 14, 2016 5:01:48 PM MDT, hank pronk via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<blockquote class="yiv0684011204gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex;">
<div class="yiv0684011204yqt1615495024" id="yiv0684011204yqt41926"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px;"><div dir="ltr" id="yiv0684011204yui_3_16_0_1_1468536619377_2565">Hi All, Help!</div><div dir="ltr" id="yiv0684011204yui_3_16_0_1_1468536619377_2565">I am allowed up to 2 degrees angular mismatch between the port and the seat. The conical bearing surface is 4.875 inches and I want to know how large the gap can be at the outer circumference of the port with a 2 degree mismatch. </div><div dir="ltr" id="yiv0684011204yui_3_16_0_1_1468536619377_2565">Hank</div></div></div><div style="margin-top:2.5em;margin-bottom:1em;border-bottom:1px solid #000;"></div><pre class="yiv0684011204k9mail"></pre><hr><br clear="none">Personal_Submersibles mailing list<br clear="none">Personal_Submersibles@psubs.org<br clear="none"><a rel="nofollow" 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"></blockquote></div></div></div><br clear="none"><div class="yiv0684011204yqt1615495024" id="yiv0684011204yqt45013">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a rel="nofollow" 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"></div><br clear="none"><br clear="none"></div> </div> </div> </div></div></div><div style="margin-top:2.5em;margin-bottom:1em;border-bottom:1px solid #000;"></div><pre class="yiv0684011204k9mail"></pre><hr><br clear="none">Personal_Submersibles mailing list<br clear="none">Personal_Submersibles@psubs.org<br clear="none"><a rel="nofollow" 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"></blockquote></div></div></div><br><div class="yqt6722500789" id="yqt47489">_______________________________________________<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"></div><br><br></div> </div> </div> </div></div></body></html>