Sender: <marv@lancaironline.net> (Marvin Kaye)
To: flyrotary
Date: Thu, 20 Mar 2003 22:00:26 -0500
Message-ID: <redirect-2081799@logan.com>
Reply-To: <13brv3@mchsi.com>
From: <13brv3@mchsi.com>
Subject: RE: [FlyRotary] Re: Oil cooler in the radiator?
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Try C & R again.  They offered to make a 4" for me last week.  Jerry
--------------------

I'm curious, did you tell them it was for an airplane (if that's what =
you
were shopping for)?  Some companies don't care, but I usually won't tell
them. =20

>From everything I've read, the number one factor in cooling ability is =
the
frontal area.  In other words, a large single tube core would be better =
than
a dual tube core with half the frontal area.  So, it seems that step =
number
one is picking the largest frontal area that you can fit. =20

Assuming you don't have enough space to put a single tube core, then you
have to start add tubes, and core thickness to make up the volume that =
you
need.  Surprisingly, I keep reading that this isn't so bad as it seems =
from
an airflow standpoint.  I found some data that said it only took 10% =
more
pressure to move the same volume of air through a 4" core, compared to a =
2"
core. =20

I would like to use an oil/water heat exchanger if possible, but that =
will
take a larger radiator.  Tomorrow, I hope to have my cowling fitted, so =
I'll
have a much better idea of the area I have to work with.

Thanks to everyone for the interesting ideas, and suggestions.=20

Cheers,
Rusty