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One of the best things you can do for aero is running a flat bottom, there is a gain in downforce with a reduction in drag. We're lucky in that a lot of the C7 is already flat and that GM was kind enough to tuck our exhausts up high.
I made an aluminum panel stretching from the end of my splitter to the firewall in my evo 8 and only saw benefits on street and track, including mpg and high speed stability. However my evo has a hood full of holes and we only have one small vent ducted to the radiator and the two fender vents. Has anyone tried flat bottoming the front end of the C7? Would there be sufficient venting from the side vents and past the primary cats under the car if you were to extend the panel to the back crossmember? The obvious solution would be to put a big ugly racelouvers vent on the hood but I'm trying hard to keep my car somewhat presentable.
One of the best things you can do for aero is running a flat bottom, there is a gain in downforce with a reduction in drag. We're lucky in that a lot of the C7 is already flat and that GM was kind enough to tuck our exhausts up high.
I made an aluminum panel stretching from the end of my splitter to the firewall in my evo 8 and only saw benefits on street and track, including mpg and high speed stability. However my evo has a hood full of holes and we only have one small vent ducted to the radiator and the two fender vents. Has anyone tried flat bottoming the front end of the C7? Would there be sufficient venting from the side vents and past the primary cats under the car if you were to extend the panel to the back crossmember? The obvious solution would be to put a big ugly racelouvers vent on the hood but I'm trying hard to keep my car somewhat presentable.
Stage 3 Aero has an undertray that attaches to the front of the front splitter and covers everything back to just in front of the front cradle.
I know what your saying. I've toyed with the idea for a couple years now of making a full flat floor. Most of the floor is flat, I run a very large tunneled front undertray which makes a lot of downforce (pic below) but always wanted to finish the floor and create a rear diffuser that will prevent drag from under the car as well as make some more downforce. Never took the time, our car is very fast on track and makes a lot of downforce but I know it could be even better with a complete flat floor and functional diffuser. If you do it, post it up id love to see how it goes. Maybe one winter ill design one and try it out for a season.
I am certainly aware of the benefits of a flat bottom. My largest concern would be cooling. It is really hard to know how the air behaves under the car. Will you monitor trans/diff temps? How about the exhaust including the cats? How about the brakes? We all see brake ducting that gets air to the brakes but where does it go from there? Probably a flat bottom will not affect brakes but I'd sure monitor them also. How will the driveshaft do enclosed in a tunnel w/ the exhaust? I'd want to get rid of the rubber joints for sure.
That doesn't look effective at all, and also looks very heavy. That looks like a diffuser just for looks and I don't think it looks good at all.
This diffuser I've attached is the only real diffuser I've found and it's a great product! That company made my aero setup on my time attack car and they make serious downforce, but that still doesnt complete the floor. There are still places underneath the car that need some panels to block off any area of drag and create the full flat floor.
That doesn't look effective at all, and also looks very heavy. That looks like a diffuser just for looks and I don't think it looks good at all.
This diffuser I've attached is the only real diffuser I've found and it's a great product! That company made my aero setup on my time attack car and they make serious downforce, but that still doesnt complete the floor. There are still places underneath the car that need some panels to block off any area of drag and create the full flat floor.
weighs 10 lbs and designed by lotus experts. dont own one but know a few vette racers that swear by them. just putting it out there
Not to bad but still ugly as all hell lol
I do appreciate he suggestion though, thank you.
im not a salesman I promise!! . found this video you might like. its actually much bigger than the ad shows and for the track its much sturdier than c/f and easier to repair. (having said that know im addicted to c/f!)
im not a salesman I promise!! . found this video you might like. its actually much bigger than the ad shows and for the track its much sturdier than c/f and easier to repair. (having said that know im addicted to c/f!)
Maybe you should be a salesman, your not half bad at it lol
It doesn't look as ugly as I had pictured and I'm pretty impressed all that metal only weighs 10lbs. It not a bad option at all, Faircloth Composites designed and built my aero setup so I think I'll go that route but this one aint that bad.
I can imagine it reduces drag but can't see it actually making much downforce.
I have to ask, "Why?" This is the kind of thing that becomes important at Bonneville, for example, but on the "street" is more a design exercise and one that takes careful research not to mess up the OEM design in unexpected ways. There used to be a reasonably rentable wind-tunnel in one of the Carolinas anyone could use to experiment with such ideas to get empirical numbers on what worked for which variables. After 30+ years building and racing on the Salt, regrettably I've been away too long to know what resources are currently available and where.
I have to ask, "Why?" This is the kind of thing that becomes important at Bonneville, for example, but on the "street" is more a design exercise and one that takes careful research not to mess up the OEM design in unexpected ways. There used to be a reasonably rentable wind-tunnel in one of the Carolinas anyone could use to experiment with such ideas to get empirical numbers on what worked for which variables. After 30+ years building and racing on the Salt, regrettably I've been away too long to know what resources are currently available and where.
The "Why?" Is because my car is a race car. It's not road legal or registered and competes in Time Attack events all around the US. Downforce, low drag, and air flow over and underneath the car are something we test, and pay very close attention to as im sure you did at Bonneville.
We're not all street car guys on here, some of us exclusively chase fastest lap times.
Flat Bottoming the C7
. found this video you might like. its actually much bigger than the ad shows and for the track its much sturdier than c/f and easier to repair. (having said that know im addicted to c/f!)
