The 2020 Formula 1 Belgian Grand Prix according to Brembo


 A guide to the Brembo braking systems in Formula 1 single-seaters and their use at Spa-Francorchamps


According to Brembo technicians, the Spa-Francorchamps Circuit is one of the most demanding circuits for brakes. On a scale of 1 to 5, it earned a 4 on the difficulty index, the same as the Monza track which will be the racing venue in a week's time. 

Considered the most complete track in the Formula 1 World Championship because of its combination of bends and straight sections of all kinds, it has 3 long braking sections which all last for over 2.5 seconds, an unreachable value for all the bends at Silverstone.


The superiority of carbon ​ ​

In Formula 1, carbon discs have been used since the Eighties and then spread into other motorsport competitions. Indeed, no other element offers that special combination of light weight, high thermal conductivity, and absence of dilation, even at a thousand degrees, that distinguishes Brembo F1 discs. 

The density of carbon is 1.8 grams per cubic centimeter, compared to steel's 7.8 grams and gray cast iron's 7.2 grams. Its thermal expansion coefficient is one twentieth of that of steel and one fifteenth of cast iron. The melting point of carbon is higher than 3,000°C (5,430°F) compared to the 1,200°C (2,190°F) of cast iron and 1,800°C (3,270°F) of steel. ​


Brake use during the Formula 1 Belgian Grand Prix​

Although it is the longest track in the World Championship, brakes are used just 7 times per lap, the same as the Red Bull Ring although it is almost 2.7 km (1.7 miles) shorter. The brakes are used for 13.3 seconds, just 13% of the overall duration of the race. On the Hungaroring, brakes are used for 23% of the race. 

In 6 of these braking sections, deceleration exceeds 4G whereas on bend 9 it is only 0.9G: here, the single-seaters require a reduction in speed of only 30 km/h (18.6 mph), which can be achieved in half a second, and a pedal load of 6 kg (13.2 lbs). On bends 1, 5 and 8, the load exceeds 120 kg (265 lbs) and can reach up to 174 kg (384 lbs). ​ ​



The most demanding braking section of the Spa-Francorchamps Round​​

Of the 7 braking sections at the Belgian GP, 3 are classified as very demanding on the brakes, 2 are of medium difficulty and the other 2 are light. 

The most demanding one for the braking system is bend 18: the single-seaters reach 333 km/h (207 mph) and slow down to 92 km/h (57 mph) in just 134 meters (440 feet). The Formula 1 drivers only need to brake for 2.78 seconds, but they have to apply a force of 207 kg (456 lbs) on the brake pedal with a deceleration of 5.9 G.​