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Date: Thu, 25 Jul 2013 20:12:30 -0500
Message-ID: <CAHh3jbO9Mhijmur8zmkw3TN8tv8JLQUVmfqE8x-bUYq-mpOpsQ@mail.gmail.com>
Subject: Re: [FlyRotary] coolers mounted directly to rotary
From: Mark Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary=001a11c393ee381f4004e25fd6b5

--001a11c393ee381f4004e25fd6b5
Content-Type: text/plain; charset=ISO-8859-1

Steve,

Going with your assumption that the rotary runs so smooth that isolation of
the oil cooler is not necessary.  Now suppose one rotor quits while at
altitude (fouled plug, failed coil, plugged injector, etc.) and you have to
find a place to land.  The engine will be running very rough no doubt.  The
last thing you need at that time is a secondary emergency in the form of an
oil fire.  You're much safer to mount the oil cooler to the motor mount
than to the engine.  Just say'in.

Mark


On Thu, Jul 25, 2013 at 6:36 PM, Stephen Izett <steveizett@me.com> wrote:

> Hi guys
>
> Would really appreciate your thoughts here.
> We made a decision way back to mount the oil cooler hard to the redrive
> being fed from the left cheek.
> This was made on the basis of a belief that the rotary runs very smooth.
> We recently built up the diffuser for it, trying to allow for some
> movement but I have significant concerns.
>
> If we are going to shift it, now is the time!
>
> I remember Mark S commenting on having mounted to the redrive (with some
> form of rubber isolation) then redesigned of the engine.
>
> Key concerns are:
> 1. Vibration breaking one of the many joints in the cooler and subsequent
> high pressure oil flow and possible fire.
> 2. Seal between diffuser and core.
>
> Thanks
>
> Steve Izett
> Glasair SIIRG with Renesis
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>

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Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Steve,=A0<div><br></div><div>Going with your assumption th=
at the rotary runs so smooth that isolation of the oil cooler is not necess=
ary. =A0Now suppose one rotor quits while at altitude (fouled plug, failed =
coil, plugged injector, etc.) and you have to find a place to land. =A0The =
engine will be running very rough no doubt. =A0The last thing you need at t=
hat time is a secondary emergency in the form of an oil fire. =A0You&#39;re=
 much safer to mount the oil cooler to the motor mount than to the engine. =
=A0Just say&#39;in.</div>
<div><br></div><div>Mark</div></div><div class=3D"gmail_extra"><br><br><div=
 class=3D"gmail_quote">On Thu, Jul 25, 2013 at 6:36 PM, Stephen Izett <span=
 dir=3D"ltr">&lt;<a href=3D"mailto:steveizett@me.com" target=3D"_blank">ste=
veizett@me.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Hi guys<br>
<br>
Would really appreciate your thoughts here.<br>
We made a decision way back to mount the oil cooler hard to the redrive bei=
ng fed from the left cheek.<br>
This was made on the basis of a belief that the rotary runs very smooth.<br=
>
We recently built up the diffuser for it, trying to allow for some movement=
 but I have significant concerns.<br>
<br>
If we are going to shift it, now is the time!<br>
<br>
I remember Mark S commenting on having mounted to the redrive (with some fo=
rm of rubber isolation) then redesigned of the engine.<br>
<br>
Key concerns are:<br>
1. Vibration breaking one of the many joints in the cooler and subsequent h=
igh pressure oil flow and possible fire.<br>
2. Seal between diffuser and core.<br>
<br>
Thanks<br>
<br>
Steve Izett<br>
Glasair SIIRG with Renesis<br>
--<br>
Homepage: =A0<a href=3D"http://www.flyrotary.com/" target=3D"_blank">http:/=
/www.flyrotary.com/</a><br>
Archive and UnSub: =A0 <a href=3D"http://mail.lancaironline.net:81/lists/fl=
yrotary/List.html" target=3D"_blank">http://mail.lancaironline.net:81/lists=
/flyrotary/List.html</a><br>
</blockquote></div><br></div>

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