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Message-ID: <5cf132c0704121222w72775f3dr942b3245f2ab997c@mail.gmail.com>
Date: Thu, 12 Apr 2007 14:22:53 -0500
From: "Mark Steitle" <msteitle@gmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Coolant Level Probe - Will it work
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...or you could switch to a mechanical float like I used.  No failures as
yet (works every time I push down on the float).  Its available from
McMaster Carr (http://www.mcmaster.com/).  Be sure to check the temp specs
though.

Mark S.


On 4/12/07, Dennis Haverlah <clouduster@austin.rr.com> wrote:
>
> I have an optical liquid level sensor in my air/coolant
> seperator/expansion tank.  It worked OK in tests.  After ground testing
> the engine for about one hour while auto-tuning and taxi testing, I
> drained some coolant out of the system to expose the coolant level
> sensor to make sure it still worked.  It did not indicate low coolant!
> I removed the probe and found it had a scum deposit - when wiped clean
> it worked.  My engine came out of a 2004 RX-8 and had 9400 miles on it.
> My cooland is 60% distilled water and 40 % Prestone - yellow -
> antifreeze.  I have not added any water-wetter but will check today on
> John Deer's product.  The coolant is always slightly cloudy.  The engine
> had some antifreeze in it when I recieved it and I flushed the coolant
> system.  I also changed the antifreeze after about 4 hours of ground
> operation.  Is there any solution - additive to keep the system cleaner,
> is there a better coolant level dector - or do I need to hire a scum
> cleaner to keep it clean??  I guess I could give up and just watch the
> coolant pressure for clues.
>
> Thanks,
> Dennis H.
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>

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<div>...or you could switch to a mechanical float like I used.&nbsp; No failures as yet (works every time I push down on the float).&nbsp; Its available from McMaster Carr (<a href="http://www.mcmaster.com/">http://www.mcmaster.com/
</a>).&nbsp; Be sure to check the temp specs though.&nbsp; </div>
<div>&nbsp;</div>
<div>Mark S.<br><br>&nbsp;</div>
<div><span class="gmail_quote">On 4/12/07, <b class="gmail_sendername">Dennis Haverlah</b> &lt;<a href="mailto:clouduster@austin.rr.com">clouduster@austin.rr.com</a>&gt; wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">I have an optical liquid level sensor in my air/coolant<br>seperator/expansion tank.&nbsp;&nbsp;It worked OK in tests.&nbsp;&nbsp;After ground testing
<br>the engine for about one hour while auto-tuning and taxi testing, I<br>drained some coolant out of the system to expose the coolant level<br>sensor to make sure it still worked.&nbsp;&nbsp;It did not indicate low coolant!<br>I removed the probe and found it had a scum deposit - when wiped clean
<br>it worked.&nbsp;&nbsp;My engine came out of a 2004 RX-8 and had 9400 miles on it.<br>My cooland is 60% distilled water and 40 % Prestone - yellow -<br>antifreeze.&nbsp;&nbsp;I have not added any water-wetter but will check today on<br>John Deer&#39;s product.&nbsp;&nbsp;The coolant is always slightly cloudy.&nbsp;&nbsp;The engine
<br>had some antifreeze in it when I recieved it and I flushed the coolant<br>system.&nbsp;&nbsp;I also changed the antifreeze after about 4 hours of ground<br>operation.&nbsp;&nbsp;Is there any solution - additive to keep the system cleaner,
<br>is there a better coolant level dector - or do I need to hire a scum<br>cleaner to keep it clean??&nbsp;&nbsp;I guess I could give up and just watch the<br>coolant pressure for clues.<br><br>Thanks,<br>Dennis H.<br><br>--<br>Homepage:&nbsp;&nbsp;
<a href="http://www.flyrotary.com/">http://www.flyrotary.com/</a><br>Archive and UnSub:&nbsp;&nbsp; <a href="http://mail.lancaironline.net:81/lists/flyrotary/List.html">http://mail.lancaironline.net:81/lists/flyrotary/List.html</a>
<br></blockquote></div><br>

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