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Date: Tue, 14 Dec 2004 23:30:59 -0500
From: Joe <jewen@comporium.net>
Subject: Oil Cooling/Pumping
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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References: <list-567508@logan.com>

With all the problems encountered with leaking oil coolers, I was wondering
if the following has any merit.

Instead of using the engine driven oil pump to circulate oil through the
cooler, why not install a secondary cooling loop. A seconary oil pick up
would be connected to an auxilary oil pump which would circulate the oil
through the cooler and return to the sump.  The secondary loop could be run
with a lower pressure and larger hoses to maintain an adequate flow rate,
putting less internal force on the oil cooler.  The normal engine
connections for the oil cooler would be directly connected to each other to
maintain oil flow in the engine.

One downside might be the couple of extra pounds for the aux oil pump, but
that sounds like a small price to pay.  I appreciate anyone thoughts or
comments.

Joe (Still waiting for an engine mount.)