RedNeck wind tunnel test

[Bob_n_Cincy]

Today Michael and I took our 818 out for a ride to test air flow around the back of the 818S.
We used tuft to see the airflow. We did about an hour of 60mph video.

My conclusions.
1. A lot of air is flowing into our opened up side scoops.
2. The air between the humps is turbulent and the tuft can't decide where to go.
3. The side if the hump on the outside of the car would be a great place to grab air for a TMIC.
4. The shoulder of the fender just behind the rear wheel would be a good place to grab air to cool the engine bay.
5. There in a lot of turbulence behind the rear bumper. The air flow through my rear radiator is the same at low speed as high speed.

We are going to add our belly pan and diffuser tomorrow and test again.

Attach is a crappy video.
Let me know your questions. Bob


https://youtu.be/Ojsyn40qvSY


In the picture below I circled the place I saw good steady flow.

good flow.jpg