Ferrari has revealed the latest development package of the track-specific FXX K - the FXX-K Evo - which will be available both as an limited-run model and as an upgrade package for the existing XX cars.
This latest arrival marks a significant evolution of the XX programme launched in 2005 with cars developed specifically to play an active role in Ferrari's research and development programme which aims to achieve ultimate performance on track.
As was the case with the Evo versions of the FXX and the 599 XX, the Ferrari FXX-K Evo benefits from an extensive package that applies concepts from all of the categories in which Ferrari competes: Formula 1, GT3, GTE and Ferrari Challenge.
Derived from the racing world and adopting track-specific components, the FXX-K Evo, like all the previous XX cars, is not homologated for road use and will not be used in competition outside its dedicated testing and development programme.
FXX-K EVo is solely aimed at a small, highly-select group of Ferrari clients keen to be involved in the Italian marques highest level customer development programme.
At the development stage, the designers worked on a broad range of different aspects of the FXX-K Evo, starting with reducing its overall weight. By drawing on Ferrari’s Formula 1 experience they've produced a lighter car than the previous FXX-K despite introducing new elements such as the fixed rear wing.
The FXX-K Evo features an evolved aero package developed by Ferrari’s engineers and the Ferrari Style Centre’s designers, one which now delivers downforce figures that are very close to those of the cars competing in the GT3 and GTE championships.
The FXX-K Evo’s downforce coefficient has been improved by 23 per cent on the previous version, which is the equivalent of a 75 per cent increase on the LaFerrari road car from which it is derived. Downforce of 640kg is said to be generated at 200 km/h, and exceeds 830 kg at the car’s red-line speed.
The FXX-K Evo’s downforce level is boosted by a twin-profile fixed wing on the tail. This new addition was developed to work with the active rear spoiler.
The twin-profile rear wing is supported by two side fins as well as by a central fin. The latter plays a dual role: it acts as a vertical fin, boosting stability at low yaw angles, and it supports the action of the three delta vortex generators.
The design of the rear bumpers was also modified in the light of the new flow structures. The by-pass vent from the rear wheel arch has been enlarged, hollowing out the volume behind the wheels to ensure the wake from the wheels is channelled.
The result is that the flow to the rear diffuser is protected and losses are reduced so that downforce has been boosted by 5 per cent.
The sides of the front bumper was altered by hollowing out the surfaces beneath the headlights. This made space for a couple of flicks divided by a vertical turning vane and an additional intake ahead of the front wheels.
This system guarantees an increase of 10 per cent in downforce. It also makes good use of know-how acquired in the GT programmes, where rules introduced in 2016 permitted extensive study of the interaction between horizontal (flicks) and vertical (dive plane) flow management systems.
Ground effect was also boosted by the introduction of vortex generators on the undertray. This capitalised on the accelerations created by the rear system and the front underbody, generating 30 per cent of the extra downforce the car delivers compared to the FXX-K.
The FXX-K Evo’s boosted performance also demanded new front brake air intakes which, although no wider to avoid increasing drag, are more efficient thanks to a complete redesign of the intake itself.
The suspension also had to be specifically calibrated to adapt it to the car’s new aerodynamic efficiency figures.
After undergoing around 5,000 km of development runs and 15,000 km of reliability test-drives, the FXX-K EVO will be a active in the XX Programme in the 2018/2019 season which spans nine track outings in all between the start of March and the end of October.
|
Ferrari FXX-K Evo Technical Specifications |
|
|
HY-KERS System |
|
|
Max. power output |
1050 cv |
|
Max. torque |
>900 Nm |
|
Power output - ICE* |
860 cv @9200 rpm |
|
Max. rpms |
9400 rpm |
|
Max. torque - ICE |
750 Nm @6500 rpm |
|
Power output - electric motor |
140 Kw (190 cv) |
|
ICE |
|
|
Type |
V12, 65° |
|
Bore and stroke |
94 x 75.2 mm |
|
Overall displacement |
6262 cm3 |
|
Compression ratio |
13.5:1 |
|
Specific power output |
137 cv/l |
|
Dimensions and weight |
|
|
Height |
1116 mm |
|
Wheelbase |
2665 mm |
|
Weight distribution |
41% front, 59% rear |
|
Gearbox |
|
|
F1 dual-clutch transmission |
7-speed |
|
Suspensions |
|
|
Front |
Double wishbone |
|
Rear |
Multilink |
|
Tyres |
(Pirelli P Zero slicks with sensors) |
|
Front |
285/650 - R19 x10½ |
|
Rear |
345/725 - R20x13 |
|
Carbon ceramic brakes (Brembo) |
|
|
Front |
398 x 223 x 36 mm |
|
Rear |
380 x 253 x 34 mm |
|
Electronic control systems |
|
|
ESC |
Stability control |
|
High performance ABS/EBD |
High performance anti-lock brakes /electronic brake distribution |
|
EF1-Trac |
F1 Traction Control integrated with hybrid system |
|
E-Diff 3 |
Third gen. electronic differential |
|
SCM-E Frs |
magnetorheological damping system with twin solenoids (Al-Ni tube) |
|
Aerodynamics |
Active |
