The jubilee 5. monopost was given the name Spitfire. It reflects experience of the old team, succesfully handed to the successors. Despite that fact, several new ideas were applied in the construction.
In the 2013 season, we decided to further reduce weight of the monopost and to improve driving performance. We accomplished both, thanks to semi-monocoque chassis and different aproach to the suspension kinematics design based on real tire data. The CFRP monocoque was a big step forward, it has been developed since 2010 and the 94th design was manufactured, after passing FEA stiffness and modal analysis. Weight of the chassis was reduced by 8kg.
Spitfire is our first monopost to obtain aero package consisting of front and rear two-element wing. Thanks to downforce of 500N available at 64km/h, the maximum of 2,3g lateral acceleration was achieved.
| Frame: | Carbon fibre sandwich monococque, space frame at the rear manufactured from high strength steel tubes (25CrMo4), TIG welded |
| Wheel base: | 1640 mm |
| Wheel track (front/rear): | 1260/1210mm |
| Weight of the vehicle (without pilot): | 216kg |
| Longitudinal weight ratio (front:rear): | 45:55% |
| Wheel suspension: | Double A-arm, pushrod suspension on both axles |
| Damping: | Four-way, adjustable Öhlins TTX25 MKII dampers. |
| Tires (front/rear): |
Hoosier 20,5×7,0 -13 R25B/Hoosier 20,0×7,5 – 13 R25B |
| Wheel rims: | OZ Racing FSAE rims 13×7 |
| Engine: | Yamaha YZF-R6, straight-four engine |
| ECU (Engine control unit): | EFI Technology Euro 4 |
| Bore: | 67mm |
| Stroke: | 43mm |
| Engine displacement: | 599ccm |
| Compression ratio: | 12,8:1 |
| Fuel: | RON 98 |
| Maximal engine power: | 64kW @ 10 400 1/min |
| Maximal engine torque: | 60Nm @ 8 700 1/min |
| Second gear: | Motorbike chain 520 |
| Differential: | Drexler LSD |
| Cooling: | Yamaha R6 water pump, custom-made radiator with electric fan. |
| Brake system: |
2 circuit system, adjustable brake ratio between rear and front brakes. 235mm GOLDFREN brake discs in the front, 4 piston calipers AP Racing CP4227 220mm GOLDFREN brake discs in the rear, 2 piston calipers AP Racing CP4226 |
| Electronics: | AIM data logger, electropneumatic sequential shifting system |