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<div dir="ltr" data-setdir="false">This is way too much kinematic viscosity for me at 100 times the viscosity of water. Manufacturers make a low viscosity silicone oil. I think we need to be closer to 5 cSt for kinematic viscosity.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">I am hoping Emile will send info on what he is using.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Cliff</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div><div><br></div>
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On Tuesday, July 25, 2023 at 06:17:28 PM CDT, Jon Wallace via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div dir="ltr">I found SuperLube which has 100 cSt viscosity, but it's pretty expensive at $17 for 4oz.</div><div dir="ltr"><br clear="none"></div><div dir="ltr"><a shape="rect" href="https://www.super-lube.com/silicone-oil" class="ydpa3b60d4yiv7256812174enhancr_card_1320779766" target="_blank" rel="noreferrer noopener">Silicone Oil | Synthetic Oils</a><br clear="none"></div><div><br clear="none"></div><div id="ydpa3b60d4yiv7256812174ydpf6eaf3baenhancr_card_1320779766" style="max-width:400px;font-family:YahooSans VF, YahooSans, Helvetica Neue, Segoe UI, Helvetica, Arial, sans-serif;" data-url="https://www.super-lube.com/silicone-oil" data-type="YENHANCER" data-size="MEDIUM" class="ydpa3b60d4yiv7256812174ydpf6eaf3bayahoo-link-enhancr-card ydpa3b60d4yiv7256812174ydpf6eaf3baymail-preserve-class ydpa3b60d4yiv7256812174ydpf6eaf3baymail-preserve-style"><a shape="rect" href="https://www.super-lube.com/silicone-oil" style="text-decoration:none !important;color:#000 !important;" class="ydpa3b60d4yiv7256812174ydpf6eaf3bayahoo-enhancr-cardlink" target="_blank" rel="noreferrer noopener"><table border="0" cellpadding="0" cellspacing="0" style="max-width:400px;" class="ydpa3b60d4yiv7256812174ydpf6eaf3bacard-wrapper ydpa3b60d4yiv7256812174ydpf6eaf3bayahoo-ignore-table"><tbody><tr><td colspan="1" rowspan="1" width="400"><table border="0" cellpadding="0" cellspacing="0" width="100%" style="max-width:400px;border-width:1px;border-style:solid;border-color:rgb(224, 228, 233);border-radius:2px;" class="ydpa3b60d4yiv7256812174ydpf6eaf3bacard ydpa3b60d4yiv7256812174ydpf6eaf3bayahoo-ignore-table"><tbody><tr><td colspan="1" rowspan="1" valign="top" background="https://s.yimg.com/lo/api/res/1.2/O9CTsKsJ4Eh7ZBfJSZNVWw--~A/Zmk9ZmlsbDt3PTQwMDtoPTIwMDthcHBpZD1pZXh0cmFjdA--/https://www.super-lube.com/Content/Images/uploaded/Footer Icons/ISO9001-2015 White.png.cf.jpg" bgcolor="#000000" height="175" style="background-color:rgb(0, 0, 0);background-size:cover;position:relative;border-radius:2px 2px 0px 0px;min-height:175px;" class="ydpa3b60d4yiv7256812174ydpf6eaf3bacard-primary-image-cell"><table border="0" cellpadding="0" cellspacing="0" style="width:100%;" class="ydpa3b60d4yiv7256812174ydpf6eaf3bacard-overlay-container-table ydpa3b60d4yiv7256812174ydpf6eaf3bayahoo-ignore-table"><tbody><tr><td colspan="1" rowspan="1" valign="top" background="https://s.yimg.com/cv/ae/nq/storm/assets/enhancrV21/1/enhancr_gradient-400x175.png" bgcolor="transparent" style="background-color:transparent;border-radius:2px 2px 0px 0px;min-height:175px;" class="ydpa3b60d4yiv7256812174ydpf6eaf3bacard-overlay-cell"><table border="0" height="175" style="width:100%;min-height:175px;" class="ydpa3b60d4yiv7256812174ydpf6eaf3bayahoo-ignore-table"><tbody><tr><td colspan="1" rowspan="1" style="text-align:left;padding:15px 0 0 15px;vertical-align:top;" class="ydpa3b60d4yiv7256812174ydpf6eaf3bacard-richInfo2"></td><td colspan="1" rowspan="1" style="text-align:right;padding:15px 15px 0 0;vertical-align:top;" class="ydpa3b60d4yiv7256812174ydpf6eaf3bacard-actions"><div class="ydpa3b60d4yiv7256812174ydpf6eaf3bacard-share-container"></div></td></tr></tbody></table></td></tr></tbody></table></td></tr><tr><td colspan="1" rowspan="1"><table align="center" border="0" cellpadding="0" cellspacing="0" style="background:#fff;position:relative;z-index:2;width:100%;max-width:400px;border-radius:0 0 2px 2px;border-top:1px solid rgb(224, 228, 233);" class="ydpa3b60d4yiv7256812174ydpf6eaf3bacard-info ydpa3b60d4yiv7256812174ydpf6eaf3bayahoo-ignore-table"><tbody><tr><td colspan="1" rowspan="1" style="background-color:#ffffff;padding:16px 0 16px 12px;vertical-align:top;border-radius:0 0 0 2px;"></td><td colspan="1" rowspan="1" style="vertical-align:middle;padding:12px 24px 16px 12px;width:99%;font-family:YahooSans VF, YahooSans, Helvetica Neue, Segoe UI, Helvetica, Arial, sans-serif;border-radius:0 0 2px 0;"><h2 style="font-size:14px;line-height:19px;margin:0px 0px 6px;font-family:YahooSans VF, YahooSans, Helvetica Neue, Segoe UI, Helvetica, Arial, sans-serif;color:rgb(29, 34, 40);max-width:314px;" class="ydpa3b60d4yiv7256812174ydpf6eaf3bacard-title">Silicone Oil | Synthetic Oils</h2><p style="font-size:12px;line-height:16px;margin:0px;color:rgb(151, 158, 168);" class="ydpa3b60d4yiv7256812174ydpf6eaf3bacard-description">Super Lube® Silicone Oil is a straight chained polydimethylsiloxanic fluid. This product is available in 100 cSt...</p></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table></a></div><div><br clear="none"></div><div><br clear="none"></div><div><br clear="none"></div><div dir="ltr"><br clear="none"></div><div><br clear="none"></div>
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On Tuesday, July 25, 2023 at 04:18:06 PM EDT, Alan James via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="ydpa3b60d4yiv7256812174ydp544a0ac3yiv6573482502"><div>Hi Cliff,<div>thanks for that detailed report.</div><div>We had discussed WD40 years ago and decided a low viscosity silicone was the way to go. The main problem we discussed was that the WD40 degraded plastics, but yes could imagine it would act on the binder in the brushes.</div><div>I built a thruster using a 6374 outrunner brushless motor.</div><div>I had 11 motors made up with 316 stainless shafts to my specs. I also had a mechanical seal. I feel now that I should build again with an inrunner motor. The inrunner has the coils on the outside and can dissipate the heat through the housing whereas with the outrunner, it's inner coils were being cooled by the silicone. It hasn't failed.</div><div>I found I needed an over-pressure in the compensation system as the silicone was being thrown out of the thruster housing and up the wiring tube.</div><div>I have been working for a long time now on an over-pressure compensator & recently bought a 3d resin printer to print the compensator body & sealing surfaces.</div><div>Not far off finishing but have to order 316 springs from overseas. The compensator can be pre set to between 2-8 psi. </div><div>The idea is that the thruster is oil compensated but pressurized by air. I like oil compensation as it lubricates & cools the parts, & in Minn Kottas I have seen, they don't have a bearing for reverse.</div><div>Alan</div><div><br clear="none"></div><div><br clear="none"><br clear="none"><div id="ydpa3b60d4yiv7256812174ydp544a0ac3yiv6573482502ymail_android_signature"><a shape="rect" id="ydpa3b60d4yiv7256812174ydp544a0ac3yiv6573482502ymail_android_signature_link" href="https://mail.onelink.me/107872968?pid=nativeplacement&c=Global_Acquisition_YMktg_315_Internal_EmailSignature&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000604&af_sub5=EmailSignature__Static_" target="_blank" rel="noreferrer noopener">Sent from Yahoo Mail on Android</a></div> <br clear="none"> <blockquote style="margin:0 0 20px 0;"> <div style="font-family:Roboto, sans-serif;color:#6D00F6;"> <div>On Wed, 26 Jul 2023 at 6:13 am, Cliff Redus via Personal_Submersibles</div><div><personal_submersibles@psubs.org> wrote:</div> </div> <div style="padding:10px 0 0 20px;margin:10px 0 0 0;border-left:1px solid #6D00F6;"> _______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="noreferrer noopener">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="noreferrer noopener">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><div id="ydpa3b60d4yiv7256812174ydp544a0ac3yiv6573482502yqtfd32312" class="ydpa3b60d4yiv7256812174ydp544a0ac3yiv6573482502yqt4735161109"><br clear="none"> </div></div><div id="ydpa3b60d4yiv7256812174ydp544a0ac3yiv6573482502yqtfd20601" class="ydpa3b60d4yiv7256812174ydp544a0ac3yiv6573482502yqt4735161109"> </div></blockquote></div></div></div>_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="noreferrer noopener">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="noreferrer noopener">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><div id="ydpa3b60d4yiv7256812174ydp544a0ac3yqtfd71462" class="ydpa3b60d4yiv7256812174ydp544a0ac3yqt4735161109"><br clear="none"></div></div></div>
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