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Highly enjoyed all videos...what kind of rear spoiler are you running there? I've been stalking your build on a couple other forums and it is all giving me great insight into what I want to do to my new S4.
Highly enjoyed all videos...what kind of rear spoiler are you running there? I've been stalking your build on a couple other forums and it is all giving me great insight into what I want to do to my new S4.
I got trolled on some other forums for suggesting that the spoiler could move air because the world isn't a vacuum. At the speeds in the video above, that spoiler negates the aerodynamic lift inherent to the A4/S4. Put another way, it creates enough downforce to ensure the lift is 0 pounds at 130 MPH. It does not create downforce to a level like 150 pounds at 130 MPH; you'd need a fixed rear wing to do that. Essentially the spoiler creates a larger-than-stock negative pressure zone behind the trunk. OEM cars at 130 MPH may have as much as 100 pounds of lift, which makes the rear tires light.
I got trolled on some other forums for suggesting that the spoiler could move air because the world isn't a vacuum. At the speeds in the video above, that spoiler negates the aerodynamic lift inherent to the A4/S4. Put another way, it creates enough downforce to ensure the lift is 0 pounds at 130 MPH. It does not create downforce to a level like 150 pounds at 130 MPH; you'd need a fixed rear wing to do that. Essentially the spoiler creates a larger-than-stock negative pressure zone behind the trunk. OEM cars at 130 MPH may have as much as 100 pounds of lift, which makes the rear tires light.
01-10-2015, 06:43 PM
B8 track video
