FI Braking Points – New Regs, New Limits. More Passing?

Ken Zino of AutoInformed.com on FI Braking Points - New Regs, New Limits. More Passing?

The latest FIA regulations shave wheel diameters increase from 13 inches to 18 inches. This of course requires larger, heavier brake discs.

For the first time in almost 50 years, Brembo is supplying calipers to all ten F1 teams. When the 2022 season opens at the Bahrain Grand Prix this weekend, nine teams will be supplied with Brembo calipers. The last will be supplied with calipers made by AP Racing, the Coventry-based company owned by the Brembo Group.

Brembo – as AutoInformed readers are likely aware – is a force in the Formula One and performance car worlds. It has hard won stopping expertise gained during 47 Formula One seasons, during which cars with Brembo brakes have won 27 Drivers’ World Championships, 31 Constructors’ World Championships and 463 Grand Prix races. The company will also supply most of the cars with hydraulics – calipers, pumps and by-wire units, as well as friction parts – carbon discs and pads. (AutoInformed: BWT Alpine F1 Team Reveals Its 2022 A522 Contender; Aston Martin’s Next Formula One car – AMR22 – Revealed, Mike Krack Leaves BMW for Aston Martin Formula One; Rolex 24 – Cold Beginning to Start a Sizzling Racing Season)

The latest FIA regulations and limits see wheel diameters increase from 13 inches to 18 inches. This of course requires larger, heavier brake discs. For 2022, the diameter of Brembo front axle carbon discs increases from 278 mm up to as much as 328 mm, while the maximum thickness remains unchanged at 32 mm. Those on the rear axle increase from 266 mm to 280 mm, with the thickness increasing from 28 mm to 32 mm.

All 20 Formula One drivers will have new nickel-plated and machined from billet six-piston calipers, the maximum number allowed by the regulations. Five teams will also use the by-wire units developed by Brembo and AP Racing to manage rear braking, which balances out the braking forces between front and rear axles. Unlike performance cars, the calipers on F1 cars are upside down since they are mounted at the bottom of the wheel.

Another perhaps significant point of difference concerns the air intake flaps, which are “prescribed components” and so must be identical across all Formula One cars. This change limits their use in increasing aerodynamic load and cooling the braking system.

Other regulations have also affected brake disc design. Until 2021, discs could be pierced with up to 1,480 holes of 2.5 mm diameter. This year, the requirements allow for between 1,000 and 1,100 holes at the front and ~900 at the back, compared with 1,050 holes previously. The updated rules also impose a new minimum diameter of 3 mm. While disc thickness stays the same, there will be fewer and larger holes, reducing cooling ability. Perforated brake pads have also been banned this season so Brembo is offering teams a choice of two alternative configurations.

In terms of weight, the 2022 braking system is around 700g heavier per wheel, adding almost 3kg to the total weight of cars compared to last season. With cars heavier than last year – with the total weight rising from 752kg to 795kg – along with the new aerodynamics, means drivers will have use new braking points around each circuit.

Customization?

Every Formula One car is set up differently. Some teams prefer lighter and less rigid calipers, while others opt for stiffer, heavier set-ups, says Brembo. Brembo group engineers worked with each team to optimize the weight/stiffness ratio and customize the brake calipers in each car. In-wheel sensors keep teams informed of disc and caliper temperatures at all times, so they and the drivers can regulate and optimize the performance of braking.

More on the 2022 F1 Regulations

Perhaps the most significant changes for 2022 affects the least visible part of the cars – the under-body. Gone is the scalino (or “step-front”) in favor of two Venturi tunnels that assist in the creation of downforce. It’s a move that it’s claimed makes the vehicle far less sensitive to turbulence caused by the one in front, meaning chasing cars can stay closer for longer when attempting to overtake.

All aerodynamics permitted in the 2021 season have been banned, including bargeboards. In response, the wings have been simplified and have a new look. There have also been changes to the tires, which as well as being set lower have a greater rim diameter, allowing wheel covers to be mounted. The latter make the tires stiffer, similar to those on street super-cars. The new regulations and lower-set tires have in turn prompted teams to review suspension design.

All this work has been carried out within the new 2022 budget cap of $140 million per team, down from $145 million in 2021. Should teams want to, they can further customize the cars’ dynamic air intakes, engine covers and wing profile, among other things.

Brembo SpA

Brembo SpA is an acknowledged innovator of brake technology for automotive vehicles. Brembo supplies high performance brake systems for many manufacturers of cars, commercial vehicles and motorbikes worldwide, as well as clutches and other components for racing. Brembo is also a leader in the racing sector and has won more than 500 championships. Today the company operates in 15 countries on 3 continents, with 29 production and business sites, and more than 12,200 employees, about 10% of whom are engineers and product specialists active in R&D. 2021 turnover was €2,777.6 million (31 December 2021). Brembo is the owner of the Brembo, AP, AP Racing, Breco, Bybre, J.Juan, Marchesini and SBS Friction brands.

This entry was posted in performance, racing and tagged , , , , , , . Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *