<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Also nice video of your boat!<br><br><br><div>Cliff </div></div><div><br>On Jul 28, 2014, at 5:30 AM, Emile van Essen via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">Cliff, <o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><a href="http://www.rotorque-jet.de/">http://www.rotorque-jet.de/</a><o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">best regards, Emile<o:p></o:p></span></font></p>
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10.0pt;font-family:Arial;color:navy"><o:p> </o:p></span></font></p>
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<p class="MsoNormal"><b><font size="2" face="Tahoma"><span style="font-size:10.0pt;
font-family:Tahoma;font-weight:bold">Van:</span></font></b><font size="2" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma">
Personal_Submersibles [<a href="mailto:personal_submersibles-bounces@psubs.org">mailto:personal_submersibles-bounces@psubs.org</a>] <b><span style="font-weight:bold">Namens </span></b>Clifford Redus via
Personal_Submersibles<br>
<b><span style="font-weight:bold">Verzonden:</span></b> zondag 27 juli 2014
23:21<br>
<b><span style="font-weight:bold">Aan:</span></b> Personal Submersibles General
Discussion<br>
<b><span style="font-weight:bold">Onderwerp:</span></b> Re: [PSUBS-MAILIST] Air
compensating thrusters</span></font><o:p></o:p></p>
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12.0pt"><o:p> </o:p></span></font></p>
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<span style="-webkit-text-size-adjust: auto">Emile. Can you send link on </span><span style="-webkit-text-size-adjust: auto;background-color:rgba(255, 255, 255, 0)">Rotoque
hubless thrusters ? </span><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">Cliff<o:p></o:p></span></font></p>
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On Jul 28, 2014, at 5:08 AM, <st1:personname productid="Emile van Essen" w:st="on">Emile
van Essen</st1:personname> via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>>
wrote:<o:p></o:p></span></font></p>
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<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt;-webkit-text-size-adjust: auto" type="cite">
<div><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PersonName">
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy">All,<u1:p></u1:p></span></font><o:p></o:p></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span style="font-size:
10.0pt;font-family:Arial;color:navy"><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy">I was using 3 CSt.
Viscisity silicone oil. Works but dissolves only silicone parts. The stern
thruster , which is used for surface cruising, is air compensated. Works now
fine . The plumping is done in a way that eventual water in the thruster is
expelled trough the 2<sup>nd</sup> stage while ascending.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy">Now using side
thrusters(for 80 operating hours) Rotoque hubless thrusters which doesn’t
need compensation.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy"><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy">Regards, <st1:personname productid="Emile van Essen" u2:st="on"><st1:personname productid="Emile van Essen" w:st="on">Emile van Essen</st1:personname><u1:p></u1:p></st1:personname></span></font><o:p></o:p></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy"><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy">Ps. For the Euro subbers;
I have 2 new Rhino VX80 ( 24 VDC 38 Kgf) in surplus. <u1:p></u1:p></span></font><o:p></o:p></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy">They are dismantled and
already provided with 18”bsp thread for air /oil compensation.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy">The can go for half new
price . If someone interested, pleas contact offlist.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class="MsoNormal"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy"><u1:p> </u1:p></span></font><o:p></o:p></p>
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<p class="MsoNormal"><b><font size="2" face="Tahoma"><span lang="EN-GB" style="font-size:10.0pt;font-family:Tahoma;font-weight:bold">Van:</span></font></b><font size="2" face="Tahoma"><span lang="EN-GB" style="font-size:10.0pt;font-family:Tahoma">
Personal_Submersibles [<a href="mailto:personal_submersibles-bounces@psubs.org">mailto:personal_submersibles-bounces@psubs.org</a>]
<b><span style="font-weight:bold">Namens </span></b>Alec Smyth via Personal_Sub</span></font><font size="2" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma">mersibles<br>
<b><span style="font-weight:bold">Verzonden:</span></b> zondag 27 juli 2014
16:17<br>
<b><span style="font-weight:bold">Aan:</span></b> Personal Submersibles General
Discussion<br>
<b><span style="font-weight:bold">Onderwerp:</span></b> Re: [PSUBS-MAILIST] Air
compensating thrusters</span></font><u1:p></u1:p><o:p></o:p></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt"><u1:p> </u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">Yes. It is extremely low viscosity and before using it, I left snips of
the motor's cables in a little jar of it for some months to make sure the
insulation was not affected.<u1:p></u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt"><u1:p> </u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">Thanks,<u1:p></u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
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Alec<u1:p></u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">On Sun, Jul 27, 2014 at 9:49 AM, Jon Wallace via Personal_Submersibles
<<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>>
wrote:<u1:p></u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt"><br>
Alec, just for completeness, what oil do you use in your MK's? Is it
marvel mystery oil?<br>
<br>
Jon<u1:p></u1:p><o:p></o:p></span></font></p>
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<br>
<br>
On 7/26/2014 10:43 PM, Private via Personal_Submersibles wrote:<u1:p></u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">Alan, honestly you're over-analyzing this one. I would summarize it
thus; air and oil compensation both work just fine, pick either one.<u1:p></u1:p><o:p></o:p></span></font></p>
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12.0pt"><u1:p> </u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">I've run Snoopy with both air and oil compensation, using the same
motors. I could not tell the difference, either in power or even in sound. I do
agree the motors must in theory lose some efficiency with oil, but it was not
in the least noticeable to me. <u1:p></u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt"><u1:p> </u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">Personally I prefer oil because the system has no moving parts and
therefore in my book is simpler and more reliable, but again... both work just
fine. <u1:p></u1:p><o:p></o:p></span></font></p>
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12.0pt"><u1:p> </u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">As for all the stuff about dissolving plastics and brushes, I finally overhauled
the thrusters last year for the first time. All I had to do was change the
seals and brushes, and I turned the commutator on the lathe because the
copper had some wear. These parts had lasted a decade. <u1:p></u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt"><u1:p> </u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">Best,<u1:p></u1:p><o:p></o:p></span></font></p>
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<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">Alec <u1:p></u1:p><o:p></o:p></span></font></p>
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