X-Virus-Scanned: clean according to Sophos on Logan.com
Return-Path: <msteitle@gmail.com>
Received: from mail-bw0-f226.google.com ([209.85.218.226] verified)
  by logan.com (CommuniGate Pro SMTP 5.3c3)
  with ESMTP id 4021861 for flyrotary@lancaironline.net; Tue, 15 Dec 2009 11:52:17 -0500
Received-SPF: pass
 receiver=logan.com; client-ip=209.85.218.226; envelope-from=msteitle@gmail.com
Received: by bwz26 with SMTP id 26so61599bwz.27
        for <flyrotary@lancaironline.net>; Tue, 15 Dec 2009 08:51:00 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=gamma;
        h=domainkey-signature:mime-version:received:in-reply-to:references
         :date:message-id:subject:from:to:content-type;
        bh=MiCjqD1PaSTuLm32Kw4veT6ivg0jV9t9fgkVqOeHIf8=;
        b=LR3EB903vOUnENa0xE8ELKH4eJAsZO5Pdlegk08mmbvRvyCP5uEJW3rpPaaVqilMf0
         dODVrBV1q27qrCi8pdqjCfmGU3gFhlOXCCQ9fvXRuv62YPQh2d5zJlLEaJjM1DAAuGrP
         kC9BWMnRlv1gCex7/0TBKXm0d/fOiUqz37MRI=
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        b=hojrdhvpSbsJqHYFE0HefARncJauD3Nmz3luKokt44x/nykNNZ9OgqDi1fhl/NTyOs
         y1uf9Jj9a5MzR2ZgjcoByXbVgVaybBXYIJPMsy8K1+Ve+9h4fefJdlCNjvsIAJVZsiv0
         lCU1Q1nmPCMheInCaNHMB9hOV9Ted5c+Z+ITs=
MIME-Version: 1.0
Received: by 10.204.153.27 with SMTP id i27mr3906787bkw.155.1260895844749; 
	Tue, 15 Dec 2009 08:50:44 -0800 (PST)
In-Reply-To: <list-4021787@logan.com>
References: <list-4021787@logan.com>
Date: Tue, 15 Dec 2009 10:50:44 -0600
Message-ID: <5cf132c0912150850q226f991fn280837fa6aef1157@mail.gmail.com>
Subject: Re: [FlyRotary] Oil cooling
From: Mark Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary=00151761ca58ecd12d047ac73078

--00151761ca58ecd12d047ac73078
Content-Type: text/plain; charset=ISO-8859-1

"How can you screw this up?"

Given enough time, I'm sure I can figure a way.  ;-)

Mark

On Tue, Dec 15, 2009 at 10:12 AM, Lynn Hanover <lehanover@gmail.com> wrote:

> Lynn,
>
> Thanks for the excellent lesson on oils and oil cooling.  I'm optimistic
> that my oil temps will come down substantially with the new oil cooler.
> Ground running has been encouraging.
>
> What do you consider an optimum temperature for the water?
>
> Mark S.
>
> From 160 to 180 is just fine. When drafting you can go to 200 but then you
> have to short shift a bit or duck out into the airstream for a second, now
> and then.
>
> Oil temps from 160 (ideal) to 200 are OK. The racer is stressing the oil
> quite a bit harder than the airplane with a typical 6,500 RPM. That would be
> about 170 to 180 HP for a side port engine or 190 to 210 HP for a periphery
> port engine. A great side port 12A can do 275 HP at 10,000 RPM and a
> Periphery port 12A can do 310 HP at 10,000 RPM.
> Once an installation has prooved the engine is assembled properly, all that
> is left is the support systems to provide anvil like reliability. The engine
> is under very little stress at 6,500 RPM and full throttle. The engine can
> cool 120 HP per housing with no drama at all.
>
> Hp at 6,500 for my engines is 173.3 at 12.3 F/A and .666 BSFC. That is a
> full "J" bridgeport with an intake tuned for 9,000 RPM (very short). This
> with an intake restricted to two 36MM chokes.
>
> This data point is used to build a full power curve. The engine is not used
> below about 7,800 RPM, or 229.4 HP.
>
> On take off you should be able to exceed the airframe structual red line
> while still over airport property.
>
> How can you screw this up?
>
> Lynn E. Hanover
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>
>

--00151761ca58ecd12d047ac73078
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div><font color=3D"#3333ff">&quot;How can you screw this up?&quot;</font><=
/div>
<div>=A0</div>
<div>Given enough time, I&#39;m sure I can figure a way.=A0 ;-)</div>
<div>=A0</div>
<div>Mark<br><br></div>
<div class=3D"gmail_quote">On Tue, Dec 15, 2009 at 10:12 AM, Lynn Hanover <=
span 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>Lynn,</div>
<div>=A0</div>
<div>Thanks for the excellent lesson on oils and oil cooling.=A0 I&#39;m=A0=
optimistic that my oil temps will come down substantially with the=A0new oi=
l cooler.=A0 Ground running has been=A0encouraging.</div>
<div>=A0</div>
<div>What do you consider an optimum temperature for the water?</div>
<div>=A0</div>
<div>Mark S.=A0</div>
<div>=A0</div>
<div>From 160 to 180 is just fine. When drafting you can go to 200 but then=
 you have to short shift a bit or duck out into the airstream for a second,=
 now and then.=A0</div>
<div>=A0</div>
<div>Oil temps from 160 (ideal) to 200 are OK. The racer is stressing the o=
il quite a bit harder than the airplane with a typical 6,500 RPM. That woul=
d be about 170 to 180 HP for a side port engine or 190 to 210 HP for a peri=
phery port engine. A great side port 12A can do 275 HP at 10,000 RPM and a =
Periphery port 12A can do 310 HP at 10,000 RPM.=A0=A0<br>
</div>
<div>Once an installation has prooved the engine is assembled properly, all=
 that is left is the support systems to provide anvil like reliability. The=
 engine is under very little stress at 6,500 RPM and full throttle. The eng=
ine can cool 120 HP per housing with no drama at all. </div>

<div>=A0</div>
<div>Hp at 6,500 for my engines is 173.3 at 12.3 F/A and .666 BSFC. That is=
 a full &quot;J&quot; bridgeport with an intake tuned for 9,000 RPM (very s=
hort). This with an intake restricted to two 36MM chokes. </div>
<div>=A0</div>
<div>This data point is used to=A0build a full power curve. The engine is n=
ot used below about 7,800 RPM, or 229.4 HP. </div>
<div>=A0</div>
<div>On take off you should be able to exceed the airframe structual red li=
ne while still over airport property.=A0=A0</div>
<div>=A0</div>
<div>How can you screw this up?</div>
<div>=A0</div>
<div>Lynn E. Hanover</div><br>--<br>Homepage: =A0<a href=3D"http://www.flyr=
otary.com/" target=3D"_blank">http://www.flyrotary.com/</a><br>Archive and =
UnSub: =A0 <a href=3D"http://mail.lancaironline.net:81/lists/flyrotary/List=
.html" target=3D"_blank">http://mail.lancaironline.net:81/lists/flyrotary/L=
ist.html</a><br>
<br></blockquote></div><br>

--00151761ca58ecd12d047ac73078--