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Old 05-19-2015, 01:54 AM   #48 (permalink)
BabyDiesel
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Quote:
Originally Posted by aerohead View Post
Hucho infers that we can get to Cd 0.08 if every trick in the book is used.Delft University is reporting Cd 0.05--- for their latest EcoMarathon car.
To get to Cd 0.15 or lower in the Escort will require an enormous investment in time and money.And it will require flawless execution,as Ford's Ghia Studios have done with their concept cars.
*You'll need active suspension.
*You'll need to move the AC condenser to the rear.
*You'll need to move the radiator to the rear.
*A completely sealed nose.
*Below 0.15, a camera system to replace the side-view mirrors.
Here is the 1983 Ford Probe-IV,Cd 0.152

Here is the 1985 Ford Probe-V,Cd 0.137
Is there a way to get around having an active suspension? I can tell the Probe IV & V are low to the ground, with the Probe IV having just over 3" of ground clearance. It looks like this measurement is at the air dam. I am trying to not run an air dam to keep my frontal area as low as possible.

I am deleting the A/C and all of its components soon, so that is not a factor. The radiator though... hmmm. I had the thought of integrating it with my belly pan, in such a way that the radiator would lie flat and make up a piece of the belly pan itself. This comes with the risk being hit by debris should I ever run over something. Cooling could be hindered, but that can be alleviated by the electric fan.

Sealing the nose will not be an issue. Of course I would do it in a material other than duct tape, but this cannot be so hard to do.

I can tell from the photos that I am going to have to lower the ZX2 if I have any hopes of achieving the Cd figures I desire! I want to simulate the front rake of the Probe IV, so my thought was to lower just the front. Or lower the car all the way around and get a professional to cut lowering springs for more than a 2" drop up front.

Thank you for the photos. Now I have a visual to work towards
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Past threads:
ZX2 modding thread
Ecomodder's Top 10: How they do it!
ZX2 Aerodynamics: Shooting for 0.15 Cd
ZX2 coast-down testing for Cd & Crr
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