<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="yiv6695768607"><div id="yui_3_16_0_1_1432174400668_4507"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;" id="yui_3_16_0_1_1432174400668_4506"><div id="yiv6695768607"><div id="yiv6695768607yui_3_16_0_1_1432174400668_2534"><div id="yiv6695768607yui_3_16_0_1_1432174400668_2533" style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"><div id="yiv6695768607"><div id="yiv6695768607yui_3_16_0_1_1432172426792_2549"><div id="yiv6695768607yui_3_16_0_1_1432172426792_2548" style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"><div id="yiv6695768607"><div id="yiv6695768607yui_3_16_0_1_1432167869663_3082"><div id="yiv6695768607yui_3_16_0_1_1432167869663_3081" style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"><div id="yiv6695768607yui_3_16_0_1_1432165149606_5178"><span id="yiv6695768607yui_3_16_0_1_1432165149606_5686">Alec is kind of understanding me.</span></div><div id="yiv6695768607yui_3_16_0_1_1432165149606_5178"><span id="yiv6695768607yui_3_16_0_1_1432165149606_5448">On the microscopic level, at the very point of the V where it touches the propeller shaft,</span></div><div dir="ltr" id="yiv6695768607yui_3_16_0_1_1432165149606_5178"><span id="yiv6695768607yui_3_16_0_1_1432165149606_5437">there must be a slight lifting with increased pressure from depth, due to pressure from water </span></div><div dir="ltr" id="yiv6695768607yui_3_16_0_1_1432165149606_5178"><span id="yiv6695768607yui_3_16_0_1_1432165149606_5782">& oil from oposing sides pushing on the V of the seal & squeezing it up. This lifting will occur </span>untill the oil & water actually meet.</div><div dir="ltr" id="yiv6695768607yui_3_16_0_1_1432165149606_5178">This may cause mixing of the two with the shafts rotational speed. </div><div dir="ltr" id="yiv6695768607yui_3_16_0_1_1432165149606_5178">However I am assuming that with this simple type of rotary shaft seal, the oil pressure (or water depending on the seal orientation) </div><div dir="ltr" id="yiv6695768607yui_3_16_0_1_1432165149606_5178">which would be in the cavity above the spring, would counteract this, leaving a consistant pressure on the </div><div dir="ltr" id="yiv6695768607yui_3_16_0_1_1432165149606_5178">shaft regardless of depth.</div><div dir="ltr" id="yiv6695768607yui_3_16_0_1_1432165149606_5178">Alan</div><div dir="ltr" id="yiv6695768607yui_3_16_0_1_1432165149606_5178"><br clear="none"></div><div dir="ltr" id="yiv6695768607yui_3_16_0_1_1432165149606_5178"><br clear="none"></div><br clear="none"> <div id="yiv6695768607yui_3_16_0_1_1432165149606_5093" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div id="yiv6695768607yui_3_16_0_1_1432165149606_5092" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div class="yiv6695768607qtdSeparateBR" id="yiv6695768607yui_3_16_0_1_1432172426792_2547"><br clear="none"><br clear="none"></div><div class="yiv6695768607yqt6760300783" id="yiv6695768607yqt70237"><div class="yiv6695768607yqt8798542536" id="yiv6695768607yqt80874"><div class="yiv6695768607yqt7379840685" id="yiv6695768607yqt01058"><div class="yiv6695768607yqt9251474548" id="yiv6695768607yqt45845"><div dir="ltr" id="yiv6695768607yui_3_16_0_1_1432165149606_5110"> <hr id="yiv6695768607yui_3_16_0_1_1432165149606_5268" size="1"> <font id="yiv6695768607yui_3_16_0_1_1432165149606_5179" size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> Alec Smyth via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br clear="none"> <b><span style="font-weight:bold;">Sent:</span></b> Thursday, May 21, 2015 11:27 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Lip seal<br clear="none"> </font> </div> <div class="yiv6695768607y_msg_container" id="yiv6695768607yui_3_16_0_1_1432165149606_5091"><br clear="none"><div id="yiv6695768607"><div id="yiv6695768607yui_3_16_0_1_1432165149606_5090"><div dir="ltr" id="yiv6695768607yui_3_16_0_1_1432165149606_5089">Alan, if the interior of the motor is in-compressible (as in liquid filled) there is no pressure differential. It's only the pressure <u>differential</u> that counts. There is no push from either side, and you could go to any pressure you like without the seal lifting.<div id="yiv6695768607yui_3_16_0_1_1432165149606_5109"><br clear="none"></div><div id="yiv6695768607yui_3_16_0_1_1432165149606_5088">Best,</div><div id="yui_3_16_0_1_1432174400668_4595"><br clear="none">Alec</div></div><div class="yiv6695768607gmail_extra" id="yui_3_16_0_1_1432174400668_4596"><br clear="none"><div class="yiv6695768607gmail_quote" id="yui_3_16_0_1_1432174400668_4597">On Wed, May 20, 2015 at 5:49 PM, Alan James via Personal_Submersibles <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none"><blockquote class="yiv6695768607gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;" id="yui_3_16_0_1_1432174400668_4599"><div class="yiv6695768607qtdSeparateBR" id="yui_3_16_0_1_1432174400668_4598"><br clear="none"><br clear="none"></div><div class="yiv6695768607yqt2381605781" id="yiv6695768607yqt99936"><div id="yui_3_16_0_1_1432174400668_4603"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;" id="yui_3_16_0_1_1432174400668_4602"><div><span>While on the motor subject; a simple low pressure lip seal as below (substitute air side with water side)</span></div><div id="yui_3_16_0_1_1432174400668_4601"><span id="yui_3_16_0_1_1432174400668_4600">will be pressure compensated in a compensated motor! Is this correct?</span></div><div><span>In oil compensation there will be oil pushing on the wedged shape of the</span></div><div dir="ltr" id="yui_3_16_0_1_1432174400668_4605"><span id="yui_3_16_0_1_1432174400668_4604">lips mating surface, from one direction & water from the other. Eventually</span></div><div dir="ltr"><span>the pressure from both sides would lift the seal against it's spring pressure,</span></div><div dir="ltr" id="yui_3_16_0_1_1432174400668_4607"><span id="yui_3_16_0_1_1432174400668_4606">but because of the recess above the spring that the oil gets in to, it will</span></div><div dir="ltr" id="yui_3_16_0_1_1432174400668_4609"><span id="yui_3_16_0_1_1432174400668_4608">maintain the same pressure above ambient on the shaft throughout the depth changes.</span></div><div dir="ltr" id="yui_3_16_0_1_1432174400668_4611"><span id="yui_3_16_0_1_1432174400668_4610">Alan</span></div><div dir="ltr" id="yui_3_16_0_1_1432174400668_4612"><img><span><br clear="none"></span></div><br clear="none"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;" id="yui_3_16_0_1_1432174400668_4615"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;" id="yui_3_16_0_1_1432174400668_4614"> <div dir="ltr" id="yui_3_16_0_1_1432174400668_4613"> <hr size="1"> <font size="2" face="Arial" id="yui_3_16_0_1_1432174400668_4616"> <b><span style="font-weight:bold;">From:</span></b> Alan James via Personal_Submersibles <<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"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <<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"> <b><span style="font-weight:bold;">Sent:</span></b> Thursday, May 21, 2015 9:17 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] MK101 oil compensation tap<br clear="none"> </font> </div> <div><br clear="none"><div><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"><div><span>Cliff,</span></div><div dir="ltr"><span>how are you compensating for oil expansion due to heat with the KISS method.</span></div><div dir="ltr"><span>Are you just drilling holes in the housing & using tube?</span></div><div dir="ltr"><span>Alan</span></div><br clear="none"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div><br clear="none"><br clear="none"></div><div><div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> Clifford Redus via Personal_Submersibles <<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"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <<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"> <b><span style="font-weight:bold;">Sent:</span></b> Thursday, May 21, 2015 8:43 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] MK101 oil compensation tap<br clear="none"> </font> </div> <div><br clear="none"><div><div><div>Actually in the spirit of KISS, I am going to start out using oil pressure compensation. If I run into any issues, I will look at using the air or this hybrid of oil and air with a regulator. <br clear="none"><br clear="none"><br clear="none"><div>Cliff Redus</div></div><div><br clear="none"><br clear="none"></div><div><div><br clear="none">On May 20, 2015, at 2:30 PM, Alan James via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></div><blockquote type="cite"><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"><div><span>Jon,</span></div><div dir="ltr"><span>the alternative is to follow Hugh's idea that Cliff is using & I am going to test out,</span></div><div dir="ltr"><span>& put a regulator in the system </span>that is set it to around 4psi internal overpressure. </div><div dir="ltr">This means you can fill with oil & not worry about getting every</div><div dir="ltr">last drop going in, or drilling the housing. You will also be able to run it air compensated. </div><div dir="ltr">There is the safety feature that if you leak oil there is plenty of air to replace it.</div><div dir="ltr">Cliff already has the parts sorted, just put your order in:)</div><div dir="ltr">Alan</div><br clear="none"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> Jon Wallace via Personal_Submersibles <<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"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <<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"> <b><span style="font-weight:bold;">Sent:</span></b> Thursday, May 21, 2015 5:47 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] MK101 oil compensation tap<br clear="none"> </font> </div> <div><br clear="none"><br clear="none">How important is it to get every last air bubble out? Surely a fraction <br clear="none">of the total volume is not going to result in catastrophic failure of <br clear="none">the motor housing, is it?<div><br clear="none"><br clear="none"></div><div><br clear="none"><br clear="none">_______________________________________________<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></blockquote></div><blockquote type="cite"><div><span>_______________________________________________</span><br clear="none"><span>Personal_Submersibles mailing list</span><br clear="none"><span><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br clear="none"><span><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></span><br clear="none"></div></blockquote></div></div><br clear="none"><div>_______________________________________________<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><br clear="none"><div>_______________________________________________<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><br clear="none">_______________________________________________<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">
<br clear="none"></blockquote></div><br clear="none"></div></div></div><br clear="none"><div class="yiv6695768607yqt2381605781" id="yiv6695768607yqt45300">_______________________________________________<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> </div></div></div></div></div></div></div></div></div></div></div></div></div></body></html>