Mailing List flyrotary@lancaironline.net Message #52641
From: George Lendich <lendich@aanet.com.au>
Subject: Re: [FlyRotary] Water Cooling and Oil Cooling Connection
Date: Tue, 26 Oct 2010 06:58:00 +1000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Jeff,
I can't remember who it was that had the same problem with two oil coolers.
I believe the oil and oil cooling are mostly independent, but not totally.
Perhaps you can use the two for oil cooling on extended climbs/ Take-off, and shut one off at cruise?
You didn't mention the actual temps of both oil and water, was this flight temps or just running the engine?
George ( down under)
 

I have an unusual problem – my oil temperature is about 40F lower than my water temperature. I have 2 oil coolers and 1 water radiator.

I’m considering converting 1 oil cooler into a water radiator.  Obviously my oil temperature is going to increase, but if the water temperature is improved significantly will this also help in reducing the rise in oil temperature.  So far, my experiments have shown that reducing the oil temperature has little effect on water temperature.

Does anyone know if reducing their water temperature also reduces oil temperature? – or are the two systems mostly independent?  

Jeff Whaley

 



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