This car is the 67th to be built in Maranello to compete in the Formula 1 World Championship and is an evolution of last year’s SF1000, as dictated by the regulations, which require the use of the same chassis as in 2020, thus limiting the opportunities for change in many areas. Therefore, the SF21 was developed in all the permitted areas, from the engine, which is completely new, to the aerodynamics and, at the rear end, which is where the two development tokens allowed in the regulations have been used.
Laurent Mekies Racing Director
“There’s plenty of positive energy coming from our two drivers. Carlos has spent a lot of time in the factory and has integrated with the team very quickly.
As for Charles, he is already perfectly at home with the team: he knows what he wants and is also very aware of the role he has in the team, both in and out of the car. Over the winter, we have witnessed the two guys getting on very well together and this can only be a good thing for the whole team.”
Enrico Gualtieri Head of Power Unit
“As engine engineers, last season on track produced a clear picture of where we were and that was our starting point. It was that awareness, combined with our determination, our skills and those of our partners that led to the creation of the 065/6 power unit for the 2021 season.
We adopted a systematic approach, with all departments – design, simulation, development, track – working together to find every opportunity for improvement. Along with our colleagues on the chassis side, we worked a lot on the layout of the power unit, to make the overall design of the car as efficient as possible. With the internal combustion engine, we focused on increasing its level of thermal efficiency, in conjunction with our partner Shell and this has produced an improvement in lap time that we estimate at over one tenth of a second.
We are also carrying out further development on the hybrid system and the electronics, in order to revise and optimise all components. All this in a season in which power unit test bench time has been reduced still further.”
Enrico Cardile Head of Chassis
“When we began the SF21 project, our first task was to identify which area of the car we should focus on in order to achieve a radical change. We opted for the rear end, designing a new gearbox and new suspension system. This, in addition to the efforts of our power unit colleagues has led to a much tighter rear end.
We also looked at the cooling system, increasing the effectiveness of the central radiator and designed the body with more “downwashing.” Aerodynamics was one of the areas affected by the regulation changes aimed at reducing the ability to generate vertical load, in order not to put too great a strain on the tyres. That’s why, as we began developing the car’s aerodynamics, we set ourselves two goals: recovering more aerodynamic downforce than was lost through the regulations and reducing drag.
Because of the regulations, less drastic changes were possible at the front end of the car. So, we developed a new front wing which works in conjunction with a new concept nose, but the chassis itself and the suspension is off last year’s SF1000.”
Power unit 065/6
Capacity 1600 cc
Max RPM 15,000
Supercharging Single turbo
Fuel flow 100 kg/hr max
Configuration V6 90°
Bore 80 mm
Stroke 53 mm
Valves 4 per cylinder
Injection 500 bar – direct
ERS System
Configuration Hybrid energy recovery system via electrical Motor Generator Units
Battery pack Lithium-Ion batteries of minimum 20 kg weight
Battery pack max energy storage 4 MJ
MGU-K max power 120 kW (161 hp)
Max MGU-K RPM 50,000
Max MGU-H RPM 125,000
Car
Overall weight including water, oil and driver: 752 kg
Chassis made from carbon fibre and honeycomb composite with halo protection device around the cockpit. Bodywork and seat made from carbon fibre
Rear differential with hydraulic torque converter
Brembo carbon disc brakes, front and rear. Electronic brake-by-wire on rear brakes
Ferrari longitudinally-mounted gearbox with 8 forward gears and reverse
Push-rod front suspension, pull-rod rear suspension
13” front and rear wheels
