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Cd · 11-13-2020, 07:43 PM

Does anyone here have access to a Mercedes A class sedan ?
The car has an excellent .22 Cd, yet not only deviates from the template, but also has a short trunk / boot that you would think would keep flow from reattaching.
I seemed to recall it having quite a bit of tumblehome to the rear, and thought this maybe what helps the flow reattach, but after looking at one that my neighbpr has, I see that is not really such a big factor.

The reason I am asking is to see if someone would be willing to do a tuft test at the rear of the car to show what happens with the airflow. *

The .25 Cd LS-430 had an even steeper back window, but it has a longer trunk / boot that could help the air to reattach.

* or some CFD images of the rear of the car.

11-13-2020, 07:43 PM	#4 (permalink)
Cd Ultimate Fail Join Date: Feb 2008 Location: Austin,Texas Posts: 3,585 Thanks: 2,872 Thanked 1,121 Times in 679 Posts	Does anyone here have access to a Mercedes A class sedan ? The car has an excellent .22 Cd, yet not only deviates from the template, but also has a short trunk / boot that you would think would keep flow from reattaching. I seemed to recall it having quite a bit of tumblehome to the rear, and thought this maybe what helps the flow reattach, but after looking at one that my neighbpr has, I see that is not really such a big factor. The reason I am asking is to see if someone would be willing to do a tuft test at the rear of the car to show what happens with the airflow. * The .25 Cd LS-430 had an even steeper back window, but it has a longer trunk / boot that could help the air to reattach. * or some CFD images of the rear of the car.