As I thought, hard to get. I too have some ideas to gain some data from my own calculations, which I guess I'm going to have to have a go at. Perhaps the following is something like Enrico Benzing's calculations? Unfortunately I don't speak Italian.
At a start, I would get images of Monaco and Hockenheim spec downforce levels like this:
..... and then I'd arbitrarily set the downforce levels for Monaco at 100, and Hockenheim at 1.
Then I would observe qualifying onboards for the car at key corners of each track, such as Agip at Hockenheim and Tabac at Monaco. If I can get speed graphics during those corners then great. If not, I'll have to make an audio note where the throttle was, and in what gear. Then I can make some sort of calculation of:
Downforce level ÷ speed/velocity = downforce performance.
Maybe I will find a middle ground circuit like Barcelona to level up the data as neatly as possible.
I would then rinse and repeat for all other cars on the grid. Hopefully I should start to get some sort of pecking order of how good the cars were in any given season, at least aero wise.
Then I can start looking at other factors like car stability, engine driveability and tyres. Not sure yet, but at least I have a base to work from. Would hopefully help to differentiate who were the faster drivers too during a season too. Sometimes slow/fast drivers muddy the perception of how good the car actually was. 2007 is in dispute by many.
Any other suggestions?
Edited by WilliamIV, 10 May 2018 - 15:54.