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Date: Thu, 13 Nov 2008 21:24:07 -0500
From: "Tracy Crook" <tracy@rotaryaviation.com>
Sender: rwstracy@gmail.com
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] ROTARY POWERED ZENAIR ZENITH C-FCPB
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Never heard of the water evaporating out of antifreeze but I guess it's
possible (but not likely assuming your system is sealed, pressurized and
your coolant isn't boiling in flight).

150 might be on the cool side but certainly high enough to fly.  I take off
when coolant and oil temps reach 130 F.   Try flying it if you are sure the
temp gauges are working OK.

Tracy


On Thu, Nov 13, 2008 at 8:11 PM, Yvon Cournoyer <geryvon@videotron.ca>wrote:

> I completed my annual inspection a few days ago
> New engine oil
> New 50/50 antifreeze/water
> New drive shaft and ball bearings on cog belt PSRU. These PSRU parts I
> damaged myself when dismounting from the engine.
> I have not flown the aircraft yet since inspection, prolounged ground
> running failed to raise the engine oil and antifreeze temperatures above
> 150F-155F. OAT about 32F to 35F. These engine temperatures are not
> standard for my 1986 engine, which would easily  reach 180F after a few
> minutes of ground running at 3000 rpm.
> A trusted friend has suggested that my old coolant was much too rich in
> antifreeze due to the water content having evaporated over time, but
> please advise
> Yvon
>
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>

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Never heard of the water evaporating out of antifreeze but I guess it&#39;s possible (but not likely assuming your system is sealed, pressurized and your coolant isn&#39;t boiling in flight).&nbsp;&nbsp; <br><br>150 might be on the cool side but certainly high enough to fly.&nbsp; I take off when coolant and oil temps reach 130 F. &nbsp; Try flying it if you are sure the temp gauges are working OK.<br>
<br>Tracy<br><br><br><div class="gmail_quote">On Thu, Nov 13, 2008 at 8:11 PM, Yvon Cournoyer <span dir="ltr">&lt;<a href="mailto:geryvon@videotron.ca">geryvon@videotron.ca</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
I completed my annual inspection a few days ago<br>
New engine oil<br>
New 50/50 antifreeze/water<br>
New drive shaft and ball bearings on cog belt PSRU. These PSRU parts I<br>
damaged myself when dismounting from the engine.<br>
I have not flown the aircraft yet since inspection, prolounged ground<br>
running failed to raise the engine oil and antifreeze temperatures above<br>
150F-155F. OAT about 32F to 35F. These engine temperatures are not<br>
standard for my 1986 engine, which would easily &nbsp;reach 180F after a few<br>
minutes of ground running at 3000 rpm.<br>
A trusted friend has suggested that my old coolant was much too rich in<br>
antifreeze due to the water content having evaporated over time, but<br>
please advise<br>
Yvon<br><font color="#888888">
<br>
<br>
--<br>
Homepage: &nbsp;<a href="http://www.flyrotary.com/" target="_blank">http://www.flyrotary.com/</a><br>
Archive and UnSub: &nbsp; <a href="http://mail.lancaironline.net:81/lists/flyrotary/List.html" target="_blank">http://mail.lancaironline.net:81/lists/flyrotary/List.html</a><br>
</font></blockquote></div><br>

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