Paul wrote:

 > A fried rotary engine can ruin your whole day.
 >

Jerry Hey wrote:

Hi Paul,  Today I ordered the "lite weight" twin fan for the Scirroco
radiator. It weighs 6 lbs. After reading your last post on air bleeds
and boundary layer, I have come to the conclusion that a fan is a
requirement during the testing phase of my  inlet scoop.  For
starters, there will be a half inch air bleed  although this  is open
to change as I learn more. If  I can develop a low profile scoop that
is effective above 100 mph, I will be happy to let the fan handle
handle the slow stuff.

Ordering the Scirroco rad was educational.  I talked to Griffin on
several occasions clarifying exactly what the core measurements were
and then went through the same process with Summit.  I was told in
every case that the core size was 22 x 13 x 2,5.   When I received
the radiator the first thing I did was confirm the core size.  You
guessed it.   The 22 inch measurement INCLUDES the tanks.  This
reduces the core from 715 cu in to 585 cu in. What do you think?  Is
this adequate assuming I can get the air through it?   Jerry

Might work if you can get a good pressure differentials across it.

Take a look at the wide 3/4 inch thin rad in the 2001 Dodge Caravan.
Use two in a V formation with a large NACA duct in the belly and
cowl flaps under the stab. 

Here is a nice belly scoop I saw at OSH.

Paul Lamar
 
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