The French GP, second round of the MotoE World Cup 2022, takes place this weekend. According to Brembo technicians, the Le Mans circuit falls into the category of circuits that are demanding on the brakes. On a scale of one to six, the French circuit has a difficulty index of four.
The Le Mans circuit hosts the second round of the MotoE World Cup for the French GP, scheduled from 13th to 15th of May. According to Brembo, whose technicians assist the MotoGP and MotoE, the Le Mans circuit falls into the category of demanding circuits for the brakes, with an index of four on a scale where the maximum is six.
The Le Mans circuit is 4185m in lenght with five left-hand and nine right-hand corners and a final straight of 674m. During a full lap the MotoGP bikes use the brakes in nine corners, 34% of the lap time, exactly like the MotoE.
Of the nine MotoGP braking sections on the Le Mans circuit, two are classified as demanding on the brakes, three are of medium difficulty, while the remaining four have a slight impact on the braking systems.
The most complex braking for the MotoGP and MotoE at Le Mans it is the one at turn nine: the MotoGP riders go from around 300 km/h to 105 km/h braking for 4,5 seconds during which they are subjected to 1,5 g of deceleration. The MotoGP bikes travel 231 meters during braking, exerting a maximum load of 5,7 kg on the brake lever.
The MotoE starts braking at 222,3 km/h and slows down to a speed of 98,7 km/h; it covers 155 meters in 3,7 seconds. In practice, the braking time is longer for MotoGP than for MotoE but what changes is the maximum deceleration which for the MotoGP reaches the value of 1,5 g while the MotoE reaches a maximum of 1,2 g.
The Brembo braking system for the MotoE
The braking system of the MotoE it is derived from MotoGP and Superbike and has been adapted for use on the Ego Corsa. The discs are of the "T-Drive" type in steel while the calipers are the GP4-PR; let's see the details. The front discs are the steel "T-Drive", have a diameter of 336 mm and a thickness of 7,1 mm with a configuration specifically designed for MotoE.
The front caliper is machined from solid aluminum monobloc, model GP4-PR. It is the caliper already used in the MotoGP championship with steel discs up to the 2017 season, when discs of this type were used in the case of wet races. It has 4 titanium pistons with differentiated diameters of 32-36 mm and is operated by a radial pump with a diameter of 19 mm and a displacement of 18 mm.
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