<div dir="ltr"><div>Hank, how did your pressure sealed motor with the magnetic coupling to the propellor work out? <br></div><div>Tim<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Nov 23, 2023 at 7:36 PM Alec Smyth via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">I don't plan to prep the shaft surface at all. According to the Parker documentation, the seal will polish the shaft so that it improves with use. We shall see! We're planning to run extended tests in an instrumented pressure chamber. Eventually, of course, the shaft would wear out. But consider how many hours we put on our subs compared to the hours an avid fisherman would. At least on my part, I probably put as many hours on it in a year as a fisherman does in a day or two.<br><div><br></div><div>:)</div><div>Alec</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Nov 23, 2023 at 8:44 PM Alan James via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Alec,<div>I just had a heads up from Cliff on this.</div><div>What sort of shaft preparation do you need?</div><div>Also are the shafts likely to deteriorate causing an undetectable ingress of water.</div><div>My thoughts are to keep the air compensation as we seem to be perfecting that. And with the over- air pressure any failure will be visible with air leaking out.</div><div>Alan  </div><div> <br><br><div id="m_2810687932278204992m_-9159652673237453269ymail_android_signature"><a id="m_2810687932278204992m_-9159652673237453269ymail_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">Sent from Yahoo Mail on Android</a></div> <br> <blockquote style="margin:0px 0px 20px"> <div style="font-family:Roboto,sans-serif;color:rgb(109,0,246)"> <div>On Fri, 24 Nov 2023 at 11:40 am, Alec Smyth via Personal_Submersibles</div><div><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:</div> </div> <div style="padding:10px 0px 0px 20px;margin:10px 0px 0px;border-left:1px solid rgb(109,0,246)"> _______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" target="_blank">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> </blockquote></div>_______________________________________________<br>
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