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Cd · 11-20-2011, 02:30 AM

Sometimes tire spats that seem as though they would help the Cd count, really don't do much of anything.

When these spats were tested on this '80 Camaro, they didn't do anything for the Cd despite shielding those wheels sticking out into the wind.

Car Aerodynamics - A2 Wind Tunnel - Wind Camp Tech Theory
Here, Eaker is examining the stock Z28-type side spats, which did not alter the Cd but added 40 pounds of rear downforce. He thought they may be more helpful in yaw but says testing 0 degrees to the airflow gives you 75 percent of the data you'd need at slight yaw. We also tested the Moon discs, which reduced drag by two to four counts. The farther the wheels are from the outer edge of the fender, the less the discs matter. View Related Article

Read more: Chevy Camaro Aerodynamics Side Spats Photo 8

Aerodynamics can be puzzling sometimes. Truly unpredictable !

11-20-2011, 02:30 AM	#12 (permalink)
Cd Ultimate Fail Join Date: Feb 2008 Location: Austin,Texas Posts: 3,585 Thanks: 2,872 Thanked 1,121 Times in 679 Posts	Sometimes tire spats that seem as though they would help the Cd count, really don't do much of anything. When these spats were tested on this '80 Camaro, they didn't do anything for the Cd despite shielding those wheels sticking out into the wind. Car Aerodynamics - A2 Wind Tunnel - Wind Camp Tech Theory Here, Eaker is examining the stock Z28-type side spats, which did not alter the Cd but added 40 pounds of rear downforce. He thought they may be more helpful in yaw but says testing 0 degrees to the airflow gives you 75 percent of the data you'd need at slight yaw. We also tested the Moon discs, which reduced drag by two to four counts. The farther the wheels are from the outer edge of the fender, the less the discs matter. View Related Article Read more: Chevy Camaro Aerodynamics Side Spats Photo 8 Aerodynamics can be puzzling sometimes. Truly unpredictable !