<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_1432157578190_4700"><span id="yui_3_16_0_1_1432157578190_4745">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_1432157578190_4700"><span id="yui_3_16_0_1_1432157578190_5089">will be pressure compensated in a compensated motor! Is this correct?</span></div><div id="yui_3_16_0_1_1432157578190_4700"><span id="yui_3_16_0_1_1432157578190_5088">In oil compensation there will be oil pushing on the wedged shape of the</span></div><div id="yui_3_16_0_1_1432157578190_4700" dir="ltr"><span id="yui_3_16_0_1_1432157578190_5087">lips mating surface, from one direction & water from the other. Eventually</span></div><div id="yui_3_16_0_1_1432157578190_4700" dir="ltr"><span id="yui_3_16_0_1_1432157578190_5086">the pressure from both sides would lift the seal against it's spring pressure,</span></div><div id="yui_3_16_0_1_1432157578190_4700" dir="ltr"><span id="yui_3_16_0_1_1432157578190_5115">but because of the recess above the spring that the oil gets in to, it  will</span></div><div id="yui_3_16_0_1_1432157578190_4700" dir="ltr"><span id="yui_3_16_0_1_1432157578190_5215">maintain the same pressure above ambient on the shaft throughout the depth changes.</span></div><div id="yui_3_16_0_1_1432157578190_4700" dir="ltr"><span>Alan</span></div><div id="yui_3_16_0_1_1432157578190_4700" dir="ltr"><img src="http://tribology.asmedigitalcollection.asme.org/data/Journals/JOTRE9/930241/trib_136_04_041703_f001.png" class="" style="" id="yui_3_16_0_1_1432157578190_5286" data-id="2c1204ad-5c76-fffd-4625-885358f6a335"><span><br></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_1432157578190_4777"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1432157578190_4776"> <div dir="ltr" id="yui_3_16_0_1_1432157578190_4775"> <hr size="1" id="yui_3_16_0_1_1432157578190_4774">  <font size="2" face="Arial" id="yui_3_16_0_1_1432157578190_4778"> <b><span style="font-weight:bold;">From:</span></b> Alan James 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> Thursday, May 21, 2015 9:17 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] MK101 oil compensation tap<br> </font> </div> <div class="y_msg_container"><br><div id="yiv3084624279"><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"><div id="yiv3084624279yui_3_16_0_1_1432153959351_11363"><span>Cliff,</span></div><div dir="ltr" id="yiv3084624279yui_3_16_0_1_1432153959351_11365"><span id="yiv3084624279yui_3_16_0_1_1432153959351_11364">how are you compensating for oil expansion due to heat with the KISS method.</span></div><div dir="ltr" id="yiv3084624279yui_3_16_0_1_1432153959351_11365"><span id="yiv3084624279yui_3_16_0_1_1432153959351_11391">Are you just drilling holes in the housing & using tube?</span></div><div dir="ltr" id="yiv3084624279yui_3_16_0_1_1432153959351_11365"><span>Alan</span></div><br clear="none">  <div id="yiv3084624279yui_3_16_0_1_1432153959351_11418" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div id="yiv3084624279yui_3_16_0_1_1432153959351_11417" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div class="qtdSeparateBR"><br><br></div><div class="yiv3084624279yqt2157508725" id="yiv3084624279yqt10695"><div dir="ltr" id="yiv3084624279yui_3_16_0_1_1432153959351_11416"> <hr size="1">  <font id="yiv3084624279yui_3_16_0_1_1432153959351_11415" size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> Clifford Redus 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 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 class="yiv3084624279y_msg_container" id="yiv3084624279yui_3_16_0_1_1432153959351_11419"><br clear="none"><div id="yiv3084624279"><div id="yiv3084624279yui_3_16_0_1_1432153959351_11422"><div id="yiv3084624279yui_3_16_0_1_1432153959351_11421">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 id="yiv3084624279yui_3_16_0_1_1432153959351_11420">Cliff Redus</div></div><div class="yiv3084624279qtdSeparateBR"><br clear="none"><br clear="none"></div><div class="yiv3084624279yqt2229948760" id="yiv3084624279yqt78467"><div id="yiv3084624279yui_3_16_0_1_1432153959351_11423"><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 id="yiv3084624279yui_3_16_0_1_1432153959351_11426" type="cite"><div id="yiv3084624279yui_3_16_0_1_1432153959351_11425"><div id="yiv3084624279yui_3_16_0_1_1432153959351_11424" style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"><div id="yiv3084624279yui_3_16_0_1_1432148950812_16750"><span>Jon,</span></div><div dir="ltr" id="yiv3084624279yui_3_16_0_1_1432148950812_16752"><span id="yiv3084624279yui_3_16_0_1_1432148950812_16751">the alternative is to follow Hugh's idea that Cliff is using & I am going to test out,</span></div><div dir="ltr" id="yiv3084624279yui_3_16_0_1_1432148950812_16752"><span id="yiv3084624279yui_3_16_0_1_1432148950812_17096">& put a regulator in the system </span>that is set it to around 4psi internal overpressure. </div><div dir="ltr" id="yiv3084624279yui_3_16_0_1_1432148950812_16753">This means you can fill with oil & not worry about getting every</div><div dir="ltr" id="yiv3084624279yui_3_16_0_1_1432148950812_16753">last drop going in, or drilling the housing. You will also be able to run it air compensated. </div><div dir="ltr" id="yiv3084624279yui_3_16_0_1_1432148950812_16753">There is the safety feature that if you leak oil there is plenty of air to replace it.</div><div dir="ltr" id="yiv3084624279yui_3_16_0_1_1432148950812_16753">Cliff already has the parts sorted, just put your order in:)</div><div dir="ltr" id="yiv3084624279yui_3_16_0_1_1432148950812_16753">Alan</div><br clear="none">  <div id="yiv3084624279yui_3_16_0_1_1432148950812_16849" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div id="yiv3084624279yui_3_16_0_1_1432148950812_16848" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div dir="ltr" id="yiv3084624279yui_3_16_0_1_1432148950812_16847"> <hr id="yiv3084624279yui_3_16_0_1_1432148950812_16846" size="1">  <font id="yiv3084624279yui_3_16_0_1_1432148950812_16850" 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 class="yiv3084624279y_msg_container" id="yiv3084624279yui_3_16_0_1_1432148950812_17188"><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 class="yiv3084624279qtdSeparateBR" id="yiv3084624279yui_3_16_0_1_1432153959351_11427"><br clear="none"><br clear="none"></div><div class="yiv3084624279yqt4946179310" id="yiv3084624279yqtfd63292"><br clear="none"><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" id="yiv3084624279yui_3_16_0_1_1432148950812_17189" 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=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