BREMBO READY FOR THE TECHNICAL CHALLENGE OF THE 2009 FORMULA ONE WORLD CHAMPIONSHIP SEASON

With the 2009 Formula One (F1) season starting this weekend at the Australian Grand Prix, Brembo brake systems are already up to speed with the new 2009 F1 technical regulations. Among the most important new designs incorporated is an emphasis on front axle braking along with lighter calipers.

Six teams willpresent brake systems and components provided by Brembo: BMW Sauber F1 Team, Brawn GP F1 Team, Force India Team, Panasonic Toyota Racing, Red Bull Racing, Scuderia Ferrari Marlboro, Scuderia Toro Rosso.

2008 Season: braking "made to measure" and en plein of wins Last year, Brembo provided braking systems that were "deep customized" to the different design choices of Formula One cars. Each of the customer teams had requested braking systems that were "made to measure", closely integrated with the design of the chassis and subject to on going development during the season.

According to the technical regulations, front and rear brakes had to have separate hydraulic circuits and the driver could only adjust the distribution of brake pressure between the two axles manually from the cockpit. Nevertheless, some teams, in collaboration with Brembo, developed systems altering the distribution of front rear load during braking in order to faithfully "copy" the intrinsic behavior of the car.

During the 2008 season, some victories were achieved on circuits that are notoriously hard on brakes, such as Bahrain (UAE), where Ferrarifinished 1 2 and BMW 3 4, and also on the challenging circuit ofMontreal (Canada), where BMW finished 1 2.

Brembo in 2009

Formula One brake system development for the 2009 season has been mainly influenced by two factors: the reduction of aerodynamic load due to the limitation of wing surfaces and, in opposition, the increase in mechanical grip thanks to the return of slick tires.

These technical revisions will make 2009 F1 cars slower in fast corners and quicker in slow corners to hopefully provide a more entertaining and competitive race.

In addition, many of the teams were uncertain as to impact that the introduction of KERS (KineticEnergy Recovery Systems) would have on the new rules. For several months Brembo has been working with the teams in order to achieve the best design solution in relation to the characteristics of the car during the braking event.

Different distribution of the braking between front and rear axle For the 2009 season, Brembo expects that, due to the new rules, the load on the front axle of the car will increase, reaching a range of 60 65%, compared to a load varying between 55 and 60% in 2008. This variable of 5% partly depends upon driver style. In essence, those drivers who tend to brake in a straight line, willmove the distribution of braking on the front (~65%); instead, drivers who brake and turn into a corner at the same time, will limit the load on front axle (~60%).

Lighter and more compact brakes on the rear

Considering the previously mentioned aspects, that is the reduction of aerodynamic load, mainly as regards the rear, the return of slicktires, bringing above all an increase in the performance of front end and the introduction of KERS, Brembo has calculated that in 2009, compared to 2008, rear brake caliper could be downsized optimizing weight component. As the introduction of KERS varies the percentage of the braking power at the rear end, Brembo has made the system more manageable, designing adequately the brake caliper and the specification of the friction material, in order to make the rear axle less sensitive to the variation of torque and operating temperature.

As a whole, for the 2009 season rear brake calipers will be lighter and more compact thanks to new design studies carried on by Brembo.

New friction materials for discs and pads

Brembo is continuing also the evolution of discs and pads friction materials, in order to make the material more manageable, especially given the wide range of torque and operating temperature.

Due to less use of rear brakes, the performances of friction material, at some tracks, need to be well under control to limit the situation of "glazing": a chemical process which tends to occur when the brakes are not so heavily used.

-credit: brembo