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Date: Tue, 05 Apr 2005 10:15:54 -0500
From: Dennis Haverlah <clouduster@austin.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: More cooling data wanted
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I'm not a NASCAR follower but I believe they have similar cooling 
problems and solutions.  I believe we could get another data point for 
our designs and check some of the "Rules-of-Thumb". They operate at 
close to the same air speed as RVs, track temps can be 100 deg, full 
throttle racing is the norm, they want to minimize drag etc.  Does 
anyone know some or all the answers to how they efficiently cool their cars?

Some questions I have;

1). HP the cars operate at in a race
2). Diffusion duct design. I assume they don't have the radiator fully 
exposed (like most production cars) to the air stream without a diffuser.
3). Cooling air inlet size
4). Width, height and thickness of typical radiators
5). Anything special about the air outlet behind the radiator - is it 
ducted or just dumped inside engine compartment?
6). Do they use normal or special EDWP water pumps, EWP been tried?
7). Others I haven't thought of?

Dennis H.