Because there are two states with different rules and outcomes. The first state, DRS closed, which is for the majority of the straights, is performing well. It is only the second state, DRS open, that is less effective, but even then it isn't universally "bad". The cars are still comparable for a small period after DRS is open as the DRS effect needs to kick in and the cars push on. By the time the speed difference is of consequence, this period lasts for less than 5% of the straight and because of the speeds involved, a 1-2% gain in that 5% of the time the car is on the straight (4kph say at 220kph) is miniscule. Look at any of the deltas when we "lose time" on the straight. We don't lose time on the straight overall.LionsHeart wrote: ↑26 Jul 2024, 19:35How exactly do you implement the passage of a straight section in the shortest time? If the maximum speed is limited, and it is always limited in one way or another, then you need to reach maximum speed as quickly as possible and then maintain it until the braking point. I think McLaren deliberately decided to sacrifice a little peak maximum speed in exchange for the most effective acceleration.mwillems wrote: ↑26 Jul 2024, 19:03This year, many top speed numbers are reported and used to make commentary on the speed of the Mclaren. Usually negative. For most of the year, even at the start of the year, the car is around parity with other cars with DRS closed.LionsHeart wrote: ↑26 Jul 2024, 19:00
By "always fast on a straight line," do you mean 2024? And do you mean the time it takes to drive a straight line in full throttle mode without the help of the DRS? In that case, yes. And as we discussed earlier in the spring, perhaps McLaren uses the hybrid part differently. Trying to transfer as much energy (power, torque) as possible during the initial acceleration, when the acceleration is most intense.
The car is now actually better than average with DRS closed, so in most Qualy laps, the cars efficiency with DRS closed has not been an issue. There isn't much DRS at this track anyway, so the car wasn't going to have a speed issue in terms of one lap pace.
Interestingly, that trait that we were talking about in spring, where the car dropped speed before high energy braking zones, I think that was down more to the fact that before Miami, we needed to scrub more speed before the corner due to the Aero deficiencies or to how much energy we were getting into the tyres.
We still aren't as fast as others with DRS open, but you are right, that scubbing of speed at the end of the straight has also been an improvement to the car, as we can carry more speed on the straight for longer as we can attack the corner as we'd prefer to. It didn't impact the top speed number by much though.
The work is very complex, because we have to take into account the exit from a slow corner, when the intense acceleration begins, then the straight itself. The work of aerodynamics, suspension, engine and gear ratios in a gearbox, how tenaciously the rear tires bite into the road surface. All this is important. I agree, the peak maximum speed at the end of the straight alone does not mean anything.
Because the Mclaren is actually quicker than most cars when DRS is closed, the overall time spent on the straight, for the Mclaren, is about the same as most of the front runners, from start to finish. Any difference is negligible. Although, qualifying differences have also been negligible too. But it should be looked at in terms of overall time lost and gained on the car. DRS efficiency is absolutely minor in terms of where the car can improve, I think.
I totally understand why the team don't make it a focus, there are far more important areas. If you take the idea that we should be fastest from the start, then the main benefit of DRS, overtaking, becomes even less important. So I think it is right to focus on downforce and DRS closed efficiency.
But in terms of measuring the performance of the cars and corners, I would introduce mini sectors than span corners from specified entry and exits, and the straights in between, measuring min speed, max speed and average speed in each, which I think is a for more effective indicator of what the cars are doing. You could go even further.
Maybe I will do something tonight, if I get the chance, to show what I mean.