[DeTomaso] Air dam

[michael frazier]

Chuck,

  The ideal location on a Pantera would be at the front of the body extension right below the radiator. This is about where the 

"mini air dam" would be.  This is also the lowest part on the car and the most vulnerable to impact so material choice is  

important.  The simple answer is "You just have to create high pressure in front of the radiator and low pressure behind it".  Be aware of the openings in the bodywork that will increase/reduce pressure.  You have to balance material, size, location

with clearance, drag, esthetics.  It could be as complcated as you want to make it but a small flexible blade near the 

pinch weld would work well, be wide enough like Dick said without creating too much drag and be less prone to impact than one mounted further forward.  That's my story.

 

Michael Frazier
Gruppo Rompiculi Corsa




 
> Date: Tue, 18 Aug 2009 10:05:30 -0400
> From: cengles at cox.net
> To: dickruzzindesign at aol.com
> CC: detomaso at realbig.com
> Subject: Re: [DeTomaso] Pressure cap pressure
> 
> 
> Dear Dick, 
> 
> The radiator spoiler on my list of things to do. I have some material to fabricate the spoiler. Some dumb questions follow. 
> 
> 1) Do you mount the spoiler to the radiator or the radiator support ? ( I suspect it is the support one should use.........) 
> 
> 2) How far down from the body should it extend? ....or conversely how close to the ground should it be? 
> 
> Warmest regards, Chuck Engles 
> 
> 
> 
> ---- dickruzzindesign <dickruzzindesign at aol.com> wrote:
> >J,
> >
> >This is not scientific but it has worked well for me.
> >
> >Years ago when working with cooling engineers I was told that for a mid-engine car with long travel from engine to radiator, a low system pressure would be ideal as the coolant would flow more freely.  The higher the pressure the less the coolant wants to move within the system.
> >That works if you do not need the higher boiling point.
> >
> >With a good coolant recovery system and 100% coolant I am easily able to use a 7 pound cap.  I run a 180 degree thermostat with a two row aluminum radiator, 350 CIs.  Most of the time, on a day in the high 80s, yesterday, my gauge reads just above the point that the thermostat has opened all the way.  I run a small spoiler just below the radiator to create a vacuum behind it and it is completely sealed off.
> >Any air entering the grill or lower front openings has to go through the radiator.
> >
> >I think the key to cooling success is starting with a radiator that has high cooling capacity.  After you have that all the tricks will work.
> >--
> >All the best, Dick Ruzzin.
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