I don't know how he configured his cooling arrangement, but I went out for an hour yesterday in 40 degree weather and could not get my oil and coolant temps above 120 degrees. I was only making 60% power, but still.....

 

I haven't quite got the tuning done on the top end- still too lean up there. Thought I had addressed the issue before takeoff, but no, and so I figured I'd burn up one more hour towards my 40 hour restriction and so continued on with the flight and some glide tests- intentionally.

 

I have a scoop underneath the belly that resembles a P-51 scoop, it has a 25x13x2 inch griffin sprint car rad alongside the stock oil cooler, they are mounted at an angle to the airflow, with the back part of the collers touching the bottom of the fuselage, and the front about 5 inches below the fuselage bottom. There is no cowl flap behind the heat exchangers. I have to do something to restrict flow through the heat exchangers to allow my temps to be up around the 160-190 mark.

 

I don't have any pictures of my arrangement at the moment, I think Paul Lamar might have some at his site.

 

 

Brian Trubee

-----Original Message-----
From: Bill Bradburry <bbradburry@bellsouth.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sat, Apr 9, 2011 6:14 am
Subject: [FlyRotary] Tracy's Cowling/Cooling Mods