FS.13 is the result of a two-year work during the pandemic, when the races did not take place. The CTU CarTech team chose to build a new car even during the non-racing season only for testing new components. This is how the predecessor of this year's car was created, a formula called FS.12. This journey, although relatively time-consuming, turned out to be crucial this season and brought the team a lot of data from testing and experience.
FS.13 has a new system of suspension and damping of the front axle, which allows to isolate the tilting and vertical components of the driving forces. Thanks to this, it is possible to set the car's behaviour faster so that drivers are able to get the most out of mechanical grip in all disciplines. Modifications to the front axle also meant the transition from a pullrod system to a pushrod system, ie the location of the suspension system at the top of the car. Thanks to this, the space in the lower part of the car was freed up and it was possible to achieve a greater air flow to the aerodynamic floors and to the wings on the sides of the cockpit. Thanks to this and thanks to further optimizations of the aerodynamic package, our aerodynamic group managed to increase the total downforce by up to 20.4% compared to the last car tested on the racing circuit.
Power unit - the engine of the Yamaha R6 motorcycle has its own cams for a better performance curve. From previous years, we took over the design of titanium drains and exhausts, carbon intake and a total reduction of 30 mm using a dry tub with an external lubrication circuit. All these modifications contribute to a maximum output of 59 kW, which is transmitted to the rear wheels via a new four-speed transmission. The semi-automatic paddle gear under the steering wheel is used to change the transmission, which has undergone considerable optimization, thanks to which we have managed to significantly reduce gear shifting times. In racing mode, petrol consumption reaches 18 l/100 km.
Low weight and low moment of inertia are crucial for a racing car. Thanks to the use of carbon wheels together with low-profile tires, it was possible to save up to 8 kg of rotating masses furthest from the center of gravity of the car. Along with other design modifications to the entire car, the total weight stopped at just 187 kg.
The CTU CarTech team started the season by defending the victory at FS Czech in Most, where it had the fastest car in the Autocross and Endurance disciplines out of all the teams. At the Hungarian FSEast race at Hungaroring, the CTU CarTech team finished third overall. At the third race of FS Alpe Adria in Croatia, where FS.13 once again dominated in two dynamic disciplines, the team didn't win due to a technical driving issue. Despite the lost points from the main discipline, CTU CarTech finished fifth in the overall standings. The last race of the season took place in Italy, where we secured sixth place.
|Frame:||Carbon fibre sandwich monocoque, spatial frame in the rear manufactured from high strength steel tubes (25CrMo4), TIG welded|
|Wheel track (front/rear):||1180/1100 mm|
|Weight of the Vehicle (without driver):||187 kg|
|Longitudinal Weight Ratio (front:rear):||48:52 %|
|Wheel Suspension:||Roll-Heave system in the front, independent pullrod in the rear, double A-arms of unequal length on both axles.|
|Damping:||Four-way, adjustable Öhlins TTX25 MKII dampers|
|Tires (front/rear):||Hoosier 16×7,5 -10 R25B/Hoosier 16×7,5 -10 R25B|
|Wheel Rims:||Machined centers with carbon collar|
|Engine:||Yamaha YZF-R6, straight-four engine|
|ECU (Engine Control Unit):||EFI Technology Euro 4|
|Maximal Engine Power:||64 kW at 10 400 rev/min|
|Maximal Torque:||60 Nm at 8 700 rev/min|
|Second Gear:||Motorcycle chain 520|
|Differential:||Drexler LSD v2010|
|Cooling:||Forced - sealed intake ducts, coolers and electric fans.|
|Electronics:||AIM data logger, electro-pneumatic sequential shifting system|