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Williams F1 team: Kubica and Russell's cars are identical

The Williams Formula 1 team is confident it has provided "identical" chassis to Robert Kubica and George Russell, despite Kubica's suggestions of different aerodynamic behaviour between the two

Kubica has trailed his rookie team-mate Russell in every qualifying and race of the 2019 campaign so far, but insisted underlying aerodynamic differences between his and Russell's chassis have made direct comparisons moot.

"It's clear that we are driving two different cars with the same set-up, so that is something we need to understand," Kubica had said earlier this season. "It's quite obvious on the data."

When asked by Autosport about the Polish driver's concerns, deputy team principal Claire Williams suggested Kubica had suspected a difference in the the floors on the two FW42s - but said this would no longer be an issue after the component in question was written off in Russell's manhole cover crash in Baku practice.

"I know Robert has thought that the floors were slightly different," said Williams.

"We haven't been able to clearly demonstrate through scans that we've done that they are, but clearly if a driver is telling you that he believes one is different to the other, we've got to get to the bottom of that, which we're trying to do at the moment.

"But then, the feeling that Robert had around that floor, [it] was the floor that was on George's car during the Baku manhole cover incident anyway, so that's effectively gone.

"The chassis, as far as we're concerned, themselves, they're identical chassis."

Kubica suggested the team "finally had an understanding" of the problem that plagued his FW42 earlier in the season.

"Hopefully this will be fixed, and at least it will give me better, let's say, comfort and consistency on the car," he said.

When asked what the area was in which he sought more consistency from the FW42, he said: "Well, it's a difficult question. As I say, there was an issue with the car which was appearing and not appearing, depending on the corner, depending on the lap.

"So, I would have to tell you 'China, lap one, this corner, then China, lap five, the other corner'.

"Everyone in the paddock is looking for performance, and to have better driveability, to have a better understanding of the package, of the tyres, of everything. Once you add variation which shouldn't be there, it's not helping.

"In some areas it was affecting me more, on some tracks, some others, less, but I am looking forward to seeing if we were able to fix it and see how it will be the feeling."

Williams revealed that one area where her team was expecting to see an improvement in Barcelona was the FW42's brake system.

"We have a particular issue with our brake system that we believe we found a solution to, but again, we've got to wait until we run that solution tomorrow, and then we'll understand whether we've resolved that problem," she said.

"If we can fix that, and then some of the other mechanical issues that we're looking at at the moment, then we'll be in better shape, but clearly the programme to deliver performance from an aero perspective is ongoing."


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