Originally Posted by
Scott_in_fl
I'm sure someone has done an analytical computation of a likely laptime.
One could time the acceleration between turns by looking at video of the Performante and ACR from various track runs. Obviously, Performante has only run the Ring that I'm aware of, but there should be enough video to time various accelerations (i.e. 40mph to 100mph, 120mph, 140mph, 160mph). Then, we can compare to the ACR, for which we have loads of good video from the official FCA record runs. From that, we could determine how quickly each car can get between each turn at the Ring.
Then, we need to come up with a "correction factor" which imputes the higher corner entrance, mid-corner and exit speed for the ACR. Again, I would compare what Performante is carrying into, though and out of each turn at the Ring to what other cars are carrying (but you need to look at more recent runs to take into account the re-pave that was done). For example, we could compare Performante entrance, mid-turn and exit to say the 991.2 GT3 which just ran the Ring in 7:12. Let's say the differential is an additional 5mph for the Performante vs the 991.2 GT3 around 40mph turns, 7mph around 80mph turns, and 10mph around 120mph turns.
Then, we could look at videos from other tracks to see how much more MPH the ACR can carry through similar speed turns (40mph, 80mph, 120mph) against the benchmark car (in this example, the GT3). We should be able to figure out roughly how much more speed the ACR is carrying. Suppose it comes out to approx. 10mph for 40mph turns, 15mph around 80mph turns, and 20mph around 120mph turns.
We can then "build" a model run of the Ring from the Performante video.
If I had enough time on my hands, I would run the computation myself. I'm sure VE has done it and knows what they are shooting for.
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