AeroWagen

[botsapper]

The Callaway AeroWagen Package for the Chevrolet Corvette C7 coupe, if you want your 'Vette bring the groceries home. Aftermarket carbon fiber parts to increase your carrying capacity and supposedly created better aero numbers. It lowered the overall drag coefficient!

http://www.callawaycars.com/homepage...wagen-package/

https://www.youtube.com/watch?v=SyqryYLK9mU

[Stubby79]

That looks pretty good to me!

Too bad it doesn't transform a cheap car in to a good looking one. Don't think I'd wanna mess up a real 'vette.

[kach22i]

Originally Posted by botsapper

........if you want your 'Vette bring the groceries home.........

I don't know with all those options there would be much left for groceries.

I suspect someone is going to do the math on how long it takes for it to pay for it's self with gas savings.

Not sure if it would be measured in decades or centuries, but I'd imagine it being a very long time.

[cRiPpLe_rOoStEr]

I don't believe it's going to be targeted as an efficiency-improvement feature, but it still does look nice.

[Vman455]

9. What is the drag coefficient of the AeroWagen?
A slight reduction in overall drag coefficient is predicted.

Color me skeptical...and at $15,000/$19,000 painted/$21,000 with the little roof spoiler....

[kach22i]

Part of me has to love this project.

Taking an impractical car, modifying at impractical cost, to end up at practicality.

What I really like about it is the same thing I liked about the Ferrari FF. It illustrates a true shape a sports car could be when a lower Cd is the objective. Yea, I loved to hate the Ferrari FF but it had it's merits.

2015 Ferrari FF Cool Wallpapers 10389 - Grivu.com


Callaway AeroWagen: Shooting brake op Corvette-basis | Autovisie.nl



Somebody should put the Aero-template to these last two images, is there an improvement?

9. What is the drag coefficient of the AeroWagen?
A slight reduction in overall drag coefficient is predicted.

http://www.carscoops.com/2016/04/rem...-callaway.html

[Stubby79]

It's too shallow, imo.

[kach22i]

Originally Posted by Stubby79

It's too shallow, imo.

It's too shallow to fit the Aerotemplate perhaps.

However give consideration to "long body aerodynamics" which may override.

Recall that the template is optimized for minimized surface area or maximum volume.

The more slender you go, typically the lower Cd, that is until skin friction begins to get detrimental. This is still a short body relatively speaking, any elongation should help lower the Cd in my opinion, but will admit I could be wrong. Only the proper testing can verify, right?

http://ecomodder.com/forum/showthrea...n-32407-2.html


It is okay to go longer than the Aerotemplate, better than going shorter to say the least. Just look at the middle image above with the asterisk, this is pretty much our template shape.

[Stubby79]

I would think the larger rear area of the back would cause more drag than is lost by decreasing the slope of the roof line. You want to minimize said area as much as you can without exceeding a certain slope. Heck, it might be better to exceed it a little if the result was a noticeably smaller back area.

[kach22i]

Originally Posted by Stubby79

I would think the larger rear area of the back would cause more drag than is lost by decreasing the slope of the roof line. You want to minimize said area as much as you can without exceeding a certain slope. Heck, it might be better to exceed it a little if the result was a noticeably smaller back area.

Interesting points, lots to think about. The whole in the air the body leaves is important, but so are the air vectors releasing from the body.

Would the Corvette be part of the Bluff Body family? It certainly is not teardrop shaped beyond the canopy.

Some of the reoccurring issues we have in the forum is that only the side view gets compared to the template, no part of the top view is included, and little other 3D analysis.

I could do a template overlay on the stock and AeroWagen version, and include both side profile and top views, I could even attempt to toss in a cross section at the 3/4 mark.

However I'm not convinced it would prove much, and that full scale testing is the only alternative when splitting hairs as fine as this.

EDIT:
The difference between "b" and "c" is a surprise to me.

http://alfa-img.com/show/lift-coeffi...of-shapes.html


There is a chart floating around the forum which shows Bluff Body lengths or perhaps Semi-Truck lengths with small differences in relation to Cd. If I stumble across it in the next few days I will post it here.