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Date: Mon, 14 Dec 2009 19:34:41 -0600
Message-ID: <5cf132c0912141734o71b40f38q1840408c228415a1@mail.gmail.com>
Subject: Re: [FlyRotary] Oil cooler
From: Mark Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary=0015175cab14de78ea047aba6475

--0015175cab14de78ea047aba6475
Content-Type: text/plain; charset=ISO-8859-1

Lynn,

There's a third possibility that I hadn't considered until I looked at the
cooler again tonight after work.  It is evident that the cooler was
pressurized to the point that the tank warped causing the divider to pull
away from the core (not welded where it meets the core).  This allowed the
oil to go in and right back out again.  The tubes look fine, but the center
of both tanks where there is no support, is ballooned outward.

I'm debating on whether to send it back to Fluidyne for inspection & repair,
or to bite the bullet and order a new one (assuming that this size is still
available).  This one is definitely repairable, but not sure I'd feel
comfortable flying behind it afterwards.

I also need to ask Gary what the working pressure is for the Fluidyne
coolers.  I'm wondering if I may have damaged this cooler with 90 psi oil
pressure without realizing it?

Mark

On Mon, Dec 14, 2009 at 6:58 PM, Lynn Hanover <lehanover@gmail.com> wrote:

> Stephen,
>
> I called Fluidyne today and spoke with Gary, the owner.  While the cooler
> is not under warranty, they are willing to look at it and determine if it
> can be repaired.  I'll send it off and see what they say.
>
> Mark
> There should be evidence of a TIG bead half way around the end tank near
> the center. Either its there or it isn't. If not and both fittings are in
> the same end, it is the problem.......
>
> Lynn E. Hanover
>

--0015175cab14de78ea047aba6475
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div>Lynn, </div>
<div>=A0</div>
<div>There&#39;s a third possibility that I hadn&#39;t considered until I l=
ooked at the cooler again tonight after work.=A0 It is evident that the coo=
ler was pressurized to the point that the tank warped causing the divider t=
o pull away from the core (not welded where it meets the core).=A0 This=A0a=
llowed the oil to go in and right back out again.=A0 The tubes look fine, b=
ut the center of=A0both tanks where there is no support, is ballooned outwa=
rd.=A0 </div>

<div>=A0</div>
<div>I&#39;m debating on whether to send it back=A0to Fluidyne for inspecti=
on &amp; repair, or=A0to bite the bullet and=A0order=A0a new one (assuming =
that this size is still available).=A0 This one is definitely repairable, b=
ut not sure I&#39;d feel comfortable flying behind it afterwards.=A0 </div>

<div>=A0</div>
<div>I also need to ask Gary what the working pressure is for the Fluidyne =
coolers.=A0 I&#39;m wondering if I may have damaged this cooler with 90 psi=
 oil pressure without realizing it?=A0 =A0 </div>
<div>=A0</div>
<div>Mark<br><br></div>
<div class=3D"gmail_quote">On Mon, Dec 14, 2009 at 6:58 PM, Lynn Hanover <s=
pan dir=3D"ltr">&lt;<a href=3D"mailto:lehanover@gmail.com">lehanover@gmail.=
com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0=
px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div>Stephen,</div>
<div>=A0</div>
<div>I called Fluidyne today and spoke with Gary, the owner.=A0 While the c=
ooler is not under warranty, they are willing to look at it and determine i=
f it can be repaired.=A0 I&#39;ll send it off and see what they say.=A0 </d=
iv>

<div>=A0</div>
<div>Mark<br></div>
<div>There should be evidence of a TIG bead half way around the end tank ne=
ar the center. Either its there or it isn&#39;t. If not and both fittings a=
re in the same end, it is the problem.......</div>
<div>=A0</div>
<div>Lynn E. Hanover</div></blockquote></div><br>

--0015175cab14de78ea047aba6475--