What did you do today to your 3/S?

I won't call these better pics as I didn't have much time to grab something and they are still cell phone pics, so I will just call these new.

Here is the initial APR wing up close:
http://i99.photobucket.com/albums/l3...ps4f5f6afd.jpg

And here is the new one up close in a similar manner:
http://i99.photobucket.com/albums/l3...ps5edbaa77.jpg

These shots emphasize the difference in mounting height and show the difference in mount design. You can also get some idea of the change in length (front edge to rear edge) between the two, as the new airfoil is longer. I need to get the car out the garage and cleaned up for some better pictures. I can also use a better camera at that time as well which should really help.

This is on a functioning AA?

yes it is.

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Originally Posted by CoopKill

This is on a functioning AA?

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Yes, both wings were functional with the active aero motor. When I get the nicer photos I will make sure to grab some with the wing up and down. I may use my gopro and just grab a short video.

What are the specs raised vs lowered on down force?

Quote:

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Originally Posted by CoopKill

What are the specs raised vs lowered on down force?

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"Meh" and "a lot"

Quote:

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Originally Posted by AdamVR4

I've never researched it or anything, but I've got a tube of that lucas lube in the garage... I'd buy it again.

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Been the bomb for many, many moons.

Gotta be even better, now. :)

Quote:

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Originally Posted by CoopKill

What are the specs raised vs lowered on down force?

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This is a tough question to answer. The APR wing had cfd data available but the new airfoil did not. My concerns with the data are that the CFD analysis appears to performed with the wing in free space and the data tables are limited. Since the wing is mounted lower than the rear roofline I don't think it will get the full performance of being in "clean air" but part of the beauty of a 3d airfoil on a car like ours is that it doesn't have to be up really high to work. And since our AA system didn't seem to meet their published numbers directly I had to do some interpolation. And once again the AOA measurements weren't made with the best device available so there is probably some variation in those values.

So disclaimer aside here are some basic comparisons based on the Angle of Attack measurements and the CFD data that APR provided:

Down - AOA = 0*
80mph = 79.6 lbs
100mph = 126.3 lbs
120mph = 184.0 lbs

Up - AOA = 14*
80mph = 107.6 lbs
100mph = 170.0 lbs
120mph = 240.7 lbs

Now once again this was for the old wing and it won't fully account for the mounting location, so in practice the actual values would be lower. To me the big question is how much lower will they be.

Still good numbers. I was thinking the up position angle might take away from the foil doing its job, and reducing down force.

Workbench is mostly completed outside of wrapping the main bench in steel now. Did some cleaning and organizing in the garage. More stuff going out with the garbage tomorrow.

Disassembled my AC compressor as its status is unknown but I did see signs of some rust by the manifold. Gonna write up a thread about it shortly for feedback and ideas. May just be super lazy and exchange it for a reman