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Is there any benefit to having a splitter behind the rear wheels of the car as far as aerodynamics?
The lowest vent piece is just there for show as its not attached to the IC ducting. Since having a splitter between the tailpipes seems to be no-go as far as fitment, I wanted to see if this would be any benefit at all.
I can say all those examples above are cosmetic for the simple reason they are no where near close enough to the ground to create any significant ground effects
A properly designed rear defuser is one of the best downforce vs drag you can do. Why it's usually a very regulated piece by most racing organizations, But most of these as pointed out are not. Check out some pics of Tudor GTLM cars or the FIA Gt3 spec cars in World Challenge. Hard to do on our cars, I don't know of any off the shelf options.
A properly designed rear defuser is one of the best downforce vs drag you can do. Why it's usually a very regulated piece by most racing organizations, But most of these as pointed out are not. Check out some pics of Tudor GTLM cars or the FIA Gt3 spec cars in World Challenge. Hard to do on our cars, I don't know of any off the shelf options.
Exactly right. All of those are just for looks except maybe the red car that you can see under. The side piece you are describing should be part of a completely flat bottom and the diffuser coming out. The side vents you are describing allows air to pass though the intercooler and out. If you block it then you would pack air in there and will experience higher AITs. our cars already have a pretty well designed flat bottom, but all goes to hell at the motor.
Thats what Im trying to figure out. I know about the textbook effects of a rear venturi diffuser but I have only seen one full diffuser for our cars and Im not sure about its availability or design. I just thought that this coupled with side skirt blades would have a pretty good impact (and not too heavy on the wallet) for the car. As far as the IC vent, I was speaking to the lowest one that is not connected to the actual duct as its mounting points could be used for the side pieces. My only concern would be the material that could be used that would not be destroyed by the engine/turbo heat.
I've always been kind of annoyed that there are no rear diffusers for our cars as I'd love to have one, purely for looks of course but functionality wouldn't hurt. The closest I've seen is the one made by Abflug. If you were making a custom one probably wouldn't be too hard to cut up into the bumper a bit in the center section either.
Downforce USA did make a rear diffuser for our car but I dont see it on their site anymore and the only place I have seen it for sale is Vivid for $900 which is crazy.
Something like this shouldnt be too hard if it can clear our exhausts.
Thats what Im trying to figure out. I know about the textbook effects of a rear venturi diffuser but I have only seen one full diffuser for our cars and Im not sure about its availability or design. I just thought that this coupled with side skirt blades would have a pretty good impact (and not too heavy on the wallet) for the car. As far as the IC vent, I was speaking to the lowest one that is not connected to the actual duct as its mounting points could be used for the side pieces. My only concern would be the material that could be used that would not be destroyed by the engine/turbo heat.
I made my own Aero for my vette and one thing you need is really ridged material. I used ABS plastic that's 1/4" thick. Air slamming on those fins just bolted to the bumper may tear but would absolutely flex. Same for a diffuser, splitter, wing, ect...are you road racing or just trying to achieve the look?
I made my own Aero for my vette and one thing you need is really ridged material. I used ABS plastic that's 1/4" thick. Air slamming on those fins just bolted to the bumper may tear but would absolutely flex. Same for a diffuser, splitter, wing, ect...are you road racing or just trying to achieve the look?
I almost bought a C5R diffuser for mine straight from Pratt&Miller it was a spare left over from the corvette racings C5R. It was very expensive, but was talked out of it because it probably wasn't optimal as it was built under the rules at the time.
I almost bought a C5R diffuser for mine straight from Pratt&Miller it was a spare left over from the corvette racings C5R. It was very expensive, but was talked out of it because it probably wasn't optimal as it was built under the rules at the time.
I would have bought that just to put on my wall!!!!! C5r was just the ultimate gt1 car. Got to see the lemans winning c5 run at road America a couple years ago. Drooooool
I spoke with Gary Pratt once and asked him if I could buy a c6r wing. He said " yes, it's 750000$, and you get a free car with it" lol
I've given it some thought, and when I ever get a chance might fab something up and see if it works...even flat-bottoming around the engine case and protruding past the intercooler vents should produce positive results...thermal management is issue #1 for a 911 diffuser...if you're willing to cut the bumper/heat shields and get a bit more creative with fab, lots could be done...
Would you be able to use the suction effect of the aero to be able to pull air out of the engine bay?
Id also think that you would want to have a true skirt along the side of the car (for racing) to be able to make sure that no air escapes out of the side.
