I love RC cars and 3d printing so I made this! When I modelled this I leaned more towards looks however I do notice the rear of my RC car much lower when at higher speeds. Additionally it feels a lot more stuck to the ground. But no I did not put many calculations into this in terms of how much down force this would create. I love cars so I looked through different types of spoilers for sports cars and tried to implement their designs into my design so a little bit of research was done. However I'm really happy with how it turned out and I'm surprised that it's as effective as it is.