Custom Splitter and Spat Setup
 

Hello everyone,

I have not been around this forum for a long time. Anyway.

I figured I would share my custom Chassis Mounted Splitter and Spat Setup.

For the Splitter I used 5052 Aluminium, the mounts are bolted to the frame using Aerospace grade 7075 Aluminium, they are braced by a 5052 Aluminium Bracket designed to shear in case of an accident. The current Splitter is V1, I have V2 arriving soon (that has more surface area and "ramps". Spats bolt to the factory inner fender mounting points re-suing factory hardware. They work together with the Splitter.

By the way, the splitter is not bolted to the bumper in any way shape, or form, there is a seal that closes the gap between it and the bumper. I designed this to be bolt-on and fully reversible. Mounts are also adjustable up/down and front/back.
https://cimg4.ibsrv.net/gimg/www.mia...043795e5df.jpg
https://cimg5.ibsrv.net/gimg/www.mia...85561fadfa.jpg
https://cimg6.ibsrv.net/gimg/www.mia...0fa60a3167.jpg
https://cimg2.ibsrv.net/gimg/www.mia...7dd781ecaf.jpg

I also scanned the front end of the car, did a very basic model, and ran some CFD on it.

https://cimg1.ibsrv.net/gimg/www.mia...49fe60d153.jpg
https://cimg2.ibsrv.net/gimg/www.mia...754301aadd.jpg
https://cimg3.ibsrv.net/gimg/www.mia...427b11e618.jpg
https://cimg5.ibsrv.net/gimg/www.mia...5b0e699b63.jpg
https://cimg6.ibsrv.net/gimg/www.mia...37cda403e0.jpg
https://cimg7.ibsrv.net/gimg/www.mia...912a48bcf2.jpg
These results plus the testing I have done on the road and the track show that the air deflected by the spats helped reduce lift created by air crashing into the tire and getting into the front wheel well. Flow underneath the car is much smoother with the splitter and the front of the car becomes a more efficient surface. The splitter does create downforce but its greatest benefit is not overall downforce but the increased stability that it provides, it sure would help a car that has a proper rear diffuser.

Looking forward to hearing from you guys.

Welcome back.
Love seeing the CFD, many of us are running similar setups, and its now pretty much impossible to beat the off the shelf splitter setup from 9 Lives Racing.
Few points from experience.
Plywood works much better than aluminum for splitter. When you get thick enough Al to have needed stiffness, it is heavy and too strong, it needs to be able to fracture when needed.
Spats work great just made from 1/8" plastic.
https://cimg3.ibsrv.net/gimg/www.mia...75c7990a23.jpg
https://cimg5.ibsrv.net/gimg/www.mia...74f6ed517d.jpg