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Joe,
I'll get a photo today of the scoop. I have a couple picture of the
radiator/cooler installation, which I'll forward at the same time.
Basically my oil cooler and radiator sit end to end behind the firewall,
under the engine and above the NACA inlet, if that makes any sense. The oil
cooler is a stock 2nd generation, and the radiator is a Howe 13X19X2
aluminum radiator.
Steve
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Joseph M Berki
Sent: Wednesday, June 30, 2004 5:57 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Temps finally down
Nice work Steve,
If you can, send some pics. Where are the rad and oil cooler
located? Type and size?
Joe Berki
Limo EZ
Looking at Mocal coolers and watching Ebay for 3rd gen coolers
At 07:55 PM 6/29/2004 -0400, Ed Anderson wrote:
>Sounds like you are closing on the solution, Steve, congratulations. Its
>always nice when you get to the point where you can fly without one eye on
>the temps.
>
>The boundary layer (particularly with coolers to the rear of an airframe)
>appears to play a big role. The layer increases in depth as you go
rearward
>and it creates havoc with the operation of cooling ducts and diffusers.
One
>article I read indicated the American P-51 and German fighter designers
>figured out the significance of keeping the boundary layer out of the
>cooling ducts whereas the British supposedly continued to be plagued with
>cooling problems with the Spitfires due to their cooling inlets being
partly
>in the boundary layer. FWIW
>
>Keep us apprised
>
>Ed
>
>Ed Anderson
>RV-6A N494BW Rotary Powered
>Matthews, NC
>----- Original Message -----
>From: "Steve Brooks" <steve@tsisp.com>
>To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
>Sent: Tuesday, June 29, 2004 6:37 PM
>Subject: [FlyRotary] Temps finally down
>
>
> > I made my eight flight today, and I'm happy to report that my inlet
scoop
> > augmentation on the Cozy did the trick.
> > I flew only about 1/2 hour because I had some other work that I wanted
to
>do
> > on it, but the temperatures ran at 190 coolant, and 200 oil.
> > I climbed up a couple thousand feet, and instead of throttling back and
> > watching my temperatures come back down from 210/220, I wasn't quite up
to
>a
> > stabilized temperature yet. That was a big change. I pulled power back
>to
> > what I had been running previously, and the temperatures stayed the
same,
> > maybe dropped a little. I then throttled up to zero boost, and the
> > temperatures held. YEAH !!!!! They used to climb up with the throttle.
> > On the decent to landing, I thought that I would have to chip the ice
off
>of
> > the engine. Coolant dropped almost off the gauge to about 140, and oil
>down
> > to 160. Actually when I touched down, they were even lower than that.
> >
> > Now that I know that I can cool it, I'm going to make another scoop,
> > narrower on the sides, but a little taller (actually lower) to get a
>little
> > further outside the boundary layer. The next scoop will have a smaller
> > inlet area compared to the current one.
> >
> > Steve Brooks
> > Cozy MKIV N75CZ
> > Turbo Rotary
> >
> >
> >
> >
> > >> Homepage: http://www.flyrotary.com/
> > >> Archive: http://lancaironline.net/lists/flyrotary/List.html
> >
>
>
>
> >> Homepage: http://www.flyrotary.com/
> >> Archive: http://lancaironline.net/lists/flyrotary/List.html
>> Homepage: http://www.flyrotary.com/
>> Archive: http://lancaironline.net/lists/flyrotary/List.html
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