The right-side aileron and stabilizer deploy, squeezing more downforce onto the right-side, foot-wide Pirellis.
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It allows teams to configure their cars with a lot less downforce, and produces quicker times.
This aerodynamic detail is designed to increase downforce over the driven wheels, further improving traction.
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The solution being studied is to halve the amount of downforce allowed on any car.
They provide 450 kilograms of downforce at 60kph, which enhances traction and side-to-side stability in the curves.
They provide 1, 000 pounds of downforce at 60mph, which enhances traction and side-to-side stability in the curves.
Changes to the cars that will ensure downforce is reduced by 20-25%.
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"The primary problem with last year's car was that it produced a lot of downforce but in a very aggressive way, " said Brawn.
As a car prepares to overtake, the air turbulence of the wake from the car ahead interferes with the downforce of the overtaker.
Both Renaults, who seem suited to high downforce tracks, were in the top seven after successfully fitting a new front wing and updated diffuser.
Yes, the low downforce wing made it easier to make such errors but was not in itself the cause of the poor lap time.
That way they can produce a body shape with maximum downforce.
McLaren surprised everyone by running with a conventional rear wing in first practice as opposed to a shallower, lower model more suited to Monza's low-downforce track.
McLaren drivers Hamilton and Heikki Kovalainen floundered for most of the first half of the season in a car that struggled for downforce and subsequent race pace.
Still, his team has led the complaints to Pirelli because Red Bull uses exhaust gases to improve its cars' rear downforce, which exposes the tires to more heat.
The teams run their cars here with less aerodynamic downforce than at any other circuit and finding the right balance between straight line speed and cornering is key.
He spoke afterwards that it had been a mistake to opt for the low downforce set-up, that he should have gone for the same high-downforce wing as Button.
This created a significant amount of downforce and extra grip, meaning the cars cornered like they were on rails and the drivers got less feedback through the steering wheel.
Like the modified old car, it has been designed to conform to new rules requiring reduced downforce, tyres which last an entire race and engines which last for two races.
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"It seems Ferrari have a major upgrade for the European GP at the end of June - a copy of Red Bull's downforce-producing exhaust system, and a new diffuser, " said Legard.
McLaren say they are struggling for downforce - the magic ingredient at the Hungaroring - but Lewis Hamilton reckons they can eke out a few more 10ths of a second if they can perfect their set-up.
The device reduces the car's drag on the straights, allowing them either to have fastest straight-line speed for the same cornering pace, or to run more downforce in the corners without a penalty down the straights.
The Technical Working Group came up with a change which they believe will slow the cars by 1.5 to two seconds per lap by reducing the effectiveness of the rear of the cars in producing aerodynamic downforce.
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Mercedes will wait until Bahrain to introduce their definitive aerodynamic package - which will include a modified diffuser, a crucial part that defines airflow at the back of the car and has a huge role in producing downforce.
Hamilton was on the third row not because the low downforce wing did not work but because he had made a couple of key errors on the lap, partly induced by being in the wake of Mark Webber's Red Bull.
It feels great around the corners, and then you start to push more to close the gap and then the car really starts to be on the ragged edge but I think it's just downforce, their car is just on rails.
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Hamilton will continue to run with an aerodynamic package suited to Monza's low-downforce circuit, which includes a rear wing with a lower angle of attack - approximately 40 degrees compared to Button's conventional rear wing, which is raised at around 70 degrees.
For another, the Brawn appears particularly strong on slow corners, where the benefits of a diffuser - which creates downforce by accelerating the airflow under the car and effectively sucking it to the road - would not be as great as on faster corners.
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