Help with concept car underbody.

[ginsaurralde]

My current design is still a WIP but I wanted to start working on the underbody and start on improving the aero. At the moment I feel like I'm not approaching my underbody design the right way and my downforce is suffering because of it. I'm still fairly new in the world of aerodynamics and any help would be greatly appreciated.

Current design :

imgur.com/a/GJdUg

[mcrews]

5 posts until you can post pics

[Grant-53]

See the book by Joseph Katz PhD on race car aerodynamics.

[freebeard]

How is the downforce 'suffering' and how do you know it's the underbody?

I'm looking at the line of stagnant air betwixt the rear wheels. It looks like the transition to the diffuser is too sharp. If possible, make it longer and flatter with some serious fencing. The outer fence can be right up against the inside of the tire.





In the front, the front wheelwells are always the worst. Short of front wheel skirts, airdams and spats are helpful.