DRCorsa

@Tom, From the data i have gathered in CFD, regarding a dual element wing i am currently designing, the downforce figures are more than enough, to say the least. For example i got something like 2300N (this should equate to about 520lbf or 235kgf) of downforce at 50m/s or 112mph and this is not at the maximum downforce adjustment! I have not made an analysis at lower speeds yet, just because CFD is time-consuming, but theoretically a downforce generating device capable of 2300N at 112mph should give you 642N or 65kg, or 144lbf at 60mph, which actually is not bad at all. Downforce is a difficult and easy thing. It is difficult because it requires time and knowledge to design and implement it right, it is easy because you can mount a super-powerful engine and a set of efficient super-large wings, but then you should find a chassis capable to withstand all these loads...

@Terry Very nice setup and those wings are a must for so much horsepower! One note though. Just looking at the rear dual element wing, i think you should review the vertical distance between main element and flap. I think that the gap is too much and if that's the case, the flap could lose its effectiveness quite dramatically. But again, this comment is just from what i can see in the video, in reality i am sure it is OK.

Thanks Alaskossie! Yes, i do custom c/f work. By clamshell you mean those traditional front wings of the of he original 7? If yes, it's like you are trying to learn your grandfather using an i-phone.. :ack: I am just joking. I could do them but i would need a set of the original ones in GRP or aluminum, so i can reproduce the desired shape for your car.

Hello guys, my first post here! I found this thread very interesting. Over the last months i started a project with an Australian customer to build a custom carbon fiber rear diffuser for his car. I studied the design in CFD software, i made the moulds and here it is. CFD results "insist" that the design is really effective with a flatfloor, even if the car is a 7-type, i.e. a brick! The floor of his car is totally covered, so the airflow reaching the diffuser will be as laminar as possible. The diffuser now is on its way to Australia, so i will be able to pass you some of his thoughts after he tries it on the track. Until then, i attach some pictures to see what i am talking about.