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kach22i · 05-20-2019, 10:14 AM

It's hard to tell because it all depends on how it fills out or does not fill out the aerodynamic template.

I'm guessing it's this profile below - correct me if I'm wrong.

https://www.nadaguides.com/Cars/2018...0-FWD/Pictures

Guessing where that top of rear window spoiler is, I suspect it is in the airflow and interacting with the attached airflow.

Spoilers spoil the airflow, causing rolling vortexes that can pull down the layer of air above it - a good thing but it takes energy - a bad thing.

I'm not a fan of this upper location because the spoiler is not at a 60 degree angle, the angle required for creating a good vortex.

In effect this spoiler is not a spoiler, it is a flatish plate that allows for a clean release of air, but it's a clean release of air where attachment would normally be, so it's kind of a stupid location.

The effect is a larger hole in the air than without it.

Again, this needs to be verified with a template overlay - go for it Joggernot.

05-20-2019, 10:14 AM	#2 (permalink)
kach22i Master EcoModder Join Date: Jul 2011 Location: Ann Arbor, Michigan Posts: 4,179 Thanks: 127 Thanked 2,802 Times in 1,968 Posts	It's hard to tell because it all depends on how it fills out or does not fill out the aerodynamic template. I'm guessing it's this profile below - correct me if I'm wrong. https://www.nadaguides.com/Cars/2018...0-FWD/Pictures Guessing where that top of rear window spoiler is, I suspect it is in the airflow and interacting with the attached airflow. Spoilers spoil the airflow, causing rolling vortexes that can pull down the layer of air above it - a good thing but it takes energy - a bad thing. I'm not a fan of this upper location because the spoiler is not at a 60 degree angle, the angle required for creating a good vortex. In effect this spoiler is not a spoiler, it is a flatish plate that allows for a clean release of air, but it's a clean release of air where attachment would normally be, so it's kind of a stupid location. The effect is a larger hole in the air than without it. Again, this needs to be verified with a template overlay - go for it Joggernot. __________________ George Architect, Artist and Designer of Objects 2012 Infiniti G37X Coupe 1977 Porsche 911s Targa 1998 Chevy S-10 Pick-Up truck 1989 Scat II HP Hovercraft You cannot sell aerodynamics in a can............