4 ms·

F1 drivers do the same thing through a chicane or wide on a curve to maintain speed, leaving the smoothest road surface for that advantage (not the skidding).

t0mas88 4y ago
That's about taking a different line. Drivers will start as far out on the kerb as possible to make the overall turn less tight, allowing them to take that turn at a higher speed. What this AI was doing is something that only works in sim-racing. It's done by humans sometimes in iRacing. Drop a wheel on the grass to make use of the fact that the sim will cause a consistent rotation (yaw) from it. Which can help turn a car into a corner. It can't be done in reality, because the effect on the car isn't predictable on a real race track.
- rad_gruchalski 4y ago
  > It can't be done in reality, because the effect on the car isn't predictable on a real race track. Maybe a driver could work it out in training for a single race and in a certain corner but the cost of getting it wrong is not only not finishing the race but also having a race car in the barrier, so a damaged car. On a race track, drivers usually know characteristics of every corner for selected weather conditions. For example: at the Nordschleife, exit of Foxhole into Adenauer Forst is safe to cut in the dry but a no no in the wet, unless you’re in a GT3 class car with enough downforce. It is the same with kerbs, stay out of then when it is wet, use them in the dry. But it’s all touch and go when the conditions change and sometimes that leads to a crash.
- MikeBVaughn 4y ago
  The modeling in iRacing is really striking in that way. It's good enough in practice that driving in the sim is extremely convincing, which makes the odd methods of exploiting the physics model that much more striking. I saw a video a few months ago of people running an endurance race in iRacing, and they'd consistently drop their left-side (IIRC, it could have been right) tires off the track on a specific straightaway. My understanding is that a) they didn't lose that much speed, b) because of the reasons stated previously, it's fairly safe in the sim, and c) it kept the front left tire temperatures closer to the optimum for the full duration of the lap. Thinking on it, one of the things I found cool was that, in a way, it's not entirely unlike what real drivers will do with wet-weather tires, where they sacrifice the best line to hunt for wetter stretches.

t0mas88 4y ago

That's about taking a different line. Drivers will start as far out on the kerb as possible to make the overall turn less tight, allowing them to take that turn at a higher speed. What this AI was doing is something that only works in sim-racing. It's done by humans sometimes in iRacing. Drop a wheel on the grass to make use of the fact that the sim will cause a consistent rotation (yaw) from it. Which can help turn a car into a corner. It can't be done in reality, because the effect on the car isn't predictable on a real race track.

rad_gruchalski 4y ago
> It can't be done in reality, because the effect on the car isn't predictable on a real race track. Maybe a driver could work it out in training for a single race and in a certain corner but the cost of getting it wrong is not only not finishing the race but also having a race car in the barrier, so a damaged car. On a race track, drivers usually know characteristics of every corner for selected weather conditions. For example: at the Nordschleife, exit of Foxhole into Adenauer Forst is safe to cut in the dry but a no no in the wet, unless you’re in a GT3 class car with enough downforce. It is the same with kerbs, stay out of then when it is wet, use them in the dry. But it’s all touch and go when the conditions change and sometimes that leads to a crash.
MikeBVaughn 4y ago
The modeling in iRacing is really striking in that way. It's good enough in practice that driving in the sim is extremely convincing, which makes the odd methods of exploiting the physics model that much more striking. I saw a video a few months ago of people running an endurance race in iRacing, and they'd consistently drop their left-side (IIRC, it could have been right) tires off the track on a specific straightaway. My understanding is that a) they didn't lose that much speed, b) because of the reasons stated previously, it's fairly safe in the sim, and c) it kept the front left tire temperatures closer to the optimum for the full duration of the lap. Thinking on it, one of the things I found cool was that, in a way, it's not entirely unlike what real drivers will do with wet-weather tires, where they sacrifice the best line to hunt for wetter stretches.