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From: "Matt Boiteau mattboiteau@gmail.com" <flyrotary@lancaironline.net>
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Date: Thu, 13 May 2021 17:00:34 -0400
Message-ID: <CAP-UEKsdwhr9rPm8z4zFyaRAOnWtfWEX2HSMYPppGyr1axNeGQ@mail.gmail.com>
Subject: Oil Cooler sizing
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary="000000000000c41b2305c23c6bd5"

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I'm trying to tackle the oil cooling. Currently have a CX racing 11x9x2 (
https://www.cxracing.com/oil-cooler-kit/OC-248-30-AN10)

On a 30C / 85F day in FL @ 2200rpm cruising
Coolant is 180 outlet / 170 inlet
Oil is 225-230 pan / 200 inlet / 215 PSRU.

I use Valvoline VR1 20W-50 standard oil, and have synthetic sitting on the
shelf ready to go. Since we can't post much in pictures here, I put a video
on youtube of the setup. The cowl inlet is 4" and the opening to the start
of the wedge is 3". I added some turning vanes to help the wedge shape send
more air to the front, but didn't change the temps too much.

The only thing left to do is increase the opening on the wedge. I could
probably get away with a 5" opening. If that doesn't work, then time to
source out a bigger rad. What sizes are you guys running?

https://www.youtube.com/watch?v=ONO4bJvw5rc


- Matt Boiteau

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<div dir=3D"ltr">I&#39;m trying to tackle the oil cooling. Currently have a=
 CX racing 11x9x2 (<a href=3D"https://www.cxracing.com/oil-cooler-kit/OC-24=
8-30-AN10">https://www.cxracing.com/oil-cooler-kit/OC-248-30-AN10</a>)<div>=
<br></div><div>On a 30C / 85F day in FL @ 2200rpm cruising</div><div>Coolan=
t is 180 outlet / 170 inlet=C2=A0</div><div>Oil is 225-230 pan / 200 inlet =
/ 215 PSRU.=C2=A0</div><div><br></div><div>I use Valvoline VR1 20W-50 stand=
ard oil, and have synthetic=C2=A0sitting on the shelf ready to go. Since we=
 can&#39;t post much in pictures here, I put a video on youtube of the setu=
p. The cowl inlet is 4&quot; and the opening to the start of the wedge is 3=
&quot;. I added some turning vanes to help the wedge shape send more air to=
 the front, but didn&#39;t change the temps too much.=C2=A0=C2=A0<br><br>Th=
e only thing left to do is increase the opening on the wedge. I could proba=
bly get away with a 5&quot; opening. If that doesn&#39;t work, then time to=
 source out a bigger rad. What sizes are you guys running?<br><br><a href=
=3D"https://www.youtube.com/watch?v=3DONO4bJvw5rc">https://www.youtube.com/=
watch?v=3DONO4bJvw5rc</a><br><br><br clear=3D"all"><div><div dir=3D"ltr" cl=
ass=3D"gmail_signature" data-smartmail=3D"gmail_signature"><div dir=3D"ltr"=
><div><div dir=3D"ltr">- Matt Boiteau</div></div></div></div></div></div></=
div>

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