Aerodynamics

A lot of talk has been going on regarding aerodynamics on these small cars.

The opinions are many, and a lot of people has been secretly experimenting with these things. 

Does adding a wing a wing really help?

Can you add downforce by changing the underside of the cars?

• At our track we have been using lexan wings for some time now. Made fron the Autoscale boxes. Cut and bent to shape using different tools. We think it works!
• Lately Reflex Racing has made a lexan wing that the rumors  say are much more efficient than the home made big wings. Racers all over the world says they work!
• Brian Ma (Color01 on mini-zracer.com), and the creator of the MRCG pan car, has been making some interesting discoveries regarding front diffusers. The results so far shows that it seems to work! He are also investigating on rear diffusers.

I could not resist trying out a few things myself, so I made a flat floor and a rear "semi diffuser".

It went trough various revisions before I could barely make a conclusion. 

The first test was done with a flat floor, and a very simple rear flap to see if I could notice any effect.

It actually seemed to have an effect. A almost completely neutral car actually got a bit understeery in high speed corners.

This sparked me into making a few different diffusers, and the last one is the one you can see pics at the bottom.

The ideal solution would be to include the body in the floor, but I have not found a way to make this practical.

The diffuser itself are form fitted to the rear of the Supra. All the air that channels trough under the car will now be let out at the rear without making turbulence inside the body.

The effect I feel it gives are not a "night and day" difference, but it does something!

Notice all the grit that attaches to the roof of the diffuser. That I think shows that the air seems to attach all the  way to the end of the diffuser. 

In my mind this shows that it actually works. 

I am not sure that it actually gives any faster laps (at least so far). The grip these cars have these days are really good, but maybe in low grip situations it could help?  

Take a look at the pictures, and feel free to comment.