<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div><br><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><br><br><div style="-webkit-text-size-adjust: auto;">Cliff</div></div><div style="-webkit-text-size-adjust: auto;"><br>On Jul 28, 2014, at 5:08 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" style="-webkit-text-size-adjust: auto;"><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">All,<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>
<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.<o:p></o:p></span></font></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.<o:p></o:p></span></font></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"><o:p> </o:p></span></font></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" w:st="on">Emile van Essen</st1:personname><o:p></o:p></span></font></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"><o:p> </o:p></span></font></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. <o:p></o:p></span></font></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.<o:p></o:p></span></font></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.<o:p></o:p></span></font></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"><o:p> </o:p></span></font></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><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">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.<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,<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<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:<o:p></o:p></span></font></p>
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Alec, just for completeness, what oil do you use in your MK's? Is it
marvel mystery oil?<br>
<br>
Jon<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:<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.<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. <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. <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. <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,<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"><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 <o:p></o:p></span></font></p>
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