Mailing List flyrotary@lancaironline.net Message #32724
From: Steve Brooks <prvt_pilot@yahoo.com>
Subject: RE: [FlyRotary] Cooling coupling
Date: Mon, 17 Jul 2006 07:41:36 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Al,
I' also suspect that there is heat/cooling transfer from the oil and coolant.  When I taxi, and also during climb out, my oil temperature always lags behind the coolant by 10 degrees or so.  In cruise, after just a few minutes, my coolant and oil both settle in to the same temperature.
 
Steve Brooks
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Al Gietzen
Sent: Sunday, July 16, 2006 5:38 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Cooling coupling

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.

 

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.  Options under consideration are a fan behind the coolant rad; and a water spray setup for the oil cooler.

 

Al

 

 

Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster