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<div class="moz-cite-prefix">You mean pull a vacuum on the motor
housing before admitting the compensating oil? That would
certainly minimize the possibility of residual air bubbles, but
with appropriate volume available in your compensator (to
accommodate both compression of residual gas space, and thermal
expansion / contraction), even that shouldn't be a problem, should
it?<br>
<br>
Sean<br>
<br>
<br>
On 2016-03-22 13:56, hank pronk via Personal_Submersibles wrote:<br>
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cite="mid:1852303574.2751229.1458676617115.JavaMail.yahoo@mail.yahoo.com"
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<div id="yui_3_16_0_ym18_1_1458675892754_7351">Guys, I was
wondering if anyone has looked at vacuum filling thruster
motors. I saw a tv program about building ROV's and that is
what they did. We could put the thruster motors in our
pressure chambers full of oil and suck the air out. That may
be the solution to that pesky bit of water that gets in.</div>
<div id="yui_3_16_0_ym18_1_1458675892754_7351">Hank<br>
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