"Bass, Jerry" wrote:

Now I have about 21 square inches inlet to the Oil cooler. It looks like

a

guppy. Mine is vertical, and Ed's is horizontal.  I have increased the

air

to the oil cooler and removed the internal deflectors.  I also changed

the

duct to bell shaped like you suggest.

I will also increase the water/Air inlet. You say about 60 sq. in. for

both.

Now is the time to do all of this.  My engine will come back this week,

I

hope.

Jerry Bass

So that is 120 square inches total for both water coolers right Jerry?
Each cowl cheek opening is about 6 by 10 inches is that correct?
I am just trying to picture this.
I think the oil cooler opening  may still be on the small side depending
on how could the duct is. How big are your air outlets under the back
bottom of the cowl? Is there a 3 inch or larger radius on the firewall
just above the air outlets?

Paul Lamar

Ed Anderson wrote:

Paul,

    I suspect the 60 sq inches refers to the total for both water radiator
inlets - like 30 sq inches apiece.  Mine are approx 24 sq inch each and I
would be hard pressed to put 60 sq inch openings on each side of the
spinner.  It will be interesting to see how effective the vertical opening
for the oil cooler works compared to the horizontal one.  I suspect the air
velocity distribution across the opening from the spinner to the outer
limits of the opening will vary considerably on the ground due to the
propeller - may not make any difference in the air.

Let us know how it goes, Jerry

Ed Anderson

Ed

 
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