Mailing List flyrotary@lancaironline.net Message #32713
From: Russell Duffy <russell.duffy@gmail.com>
Subject: RE: [FlyRotary] Cooling coupling
Date: Sun, 16 Jul 2006 21:54:52 -0500
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
I’m curious how much thermal ‘coupling’ there is between the oil and water cooling in the engine; and whether it is more one way than the other.  IOW; if I could lower the coolant temp by 20 degrees, how much effect would that have on the oil temp, if any; and vice versa. 
 
Hi Al,
 
I really can't answer this, but my guess would be that any coupling would work equally both ways.   

 

I’m thinking about this regarding cooling on the ground, and if I’m going to work on reducing one or the other, which might have the greater benefit.  As it is now, the oil gets to 220F about the time the coolant gets to 210F.   

 

If your oil temp is higher than your coolant temp now, I'd work on the oil temp first.

 

Cheers,

Rusty (dark side project smoking right along) 

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