We are lucky to have patches to the drafting code that better simulate this effect. It's certainly not perfect, but is the best we could do given our limited knowledge about how drafting really works. I remember spending an inordinate amount of time searching for hard factual data on how effective drafting is for the '66 mod, but sadly there is very little information available. There have been a few scientific studies, but usually these don't give much practical information. The best I found was for big heavy trucks which are far different from the small and light F1 cars.
If anyone out there can find some scientific info on drafting, I'd love to see it. The '66 mod (and the sports car) draft is based mostly on anecdotal evidence like Brabham saying he could feel a draft so many feet or seconds back of the car in front, etc. And there's precious little of even that floating around too.
I do feel though that the draft code from the '66 mod onward is better than what we had before. One could argue that the effect is too strong or too weak, but until someone comes up with some usable data, it's all really a best guess estimate.
Edited by Lee200, Dec 21 2010 - 03:34 PM.