| Team Name | : | Ecurie Piston Sport Auto |
| University | : | Ecole Centrale de Lyon |
| Class | : | Class 1 |
| Car Number | : | 81 |
| Country | : | France |
EPSA is a team from the Ecole Central de Lyon, a general engineering school in France.
The presented car, named Atomic, is only the second car built by the team.
It was designed and built from scratch by a completely new and what (was) an inexperienced team.
The car is the accomplishment of a two years project began in 2014 conducted by 21 students : first year for design, second to build, test and compete.
Our team aims at presenting a new car every year, involving that while a car is being built a new one is designed by other students one year younger.
The main goal of our design was to reduce weight and introduce the use of composite materials which were unused before, while keeping simple and controlled processes to have a safe and easy-handling car. This goal was achieved with a loss of 40 kg compared to the previous car and a carbon fibre suspension system.
We would like to thank all of our sponsors, partners and all the people who helped and supported us through all our project.EPSA is a team from the Ecole Central de Lyon, a general engineering school in France.
| Length, width, height, wheelbase | 2315mm 1156mm 795mm 1550mm |
| Track (front/rear)1200mm/1100mm | 1220mm/1150mm |
| Weight of car (no driver) | 216kg |
| Weight distribution including 68kg driver (front/rear) | 143/141 |
| Suspension (front/rear) | Double unequal length and non-parrallel A-Arms. Push rod actuated Ohlins TTX 25 dampers |
| Tyres (front/rear) | Hoosier 18×6.0 – 10 LCO |
| Wheels (front/rear) | 10′, offset 1.75, aluminium, Keizer i10 |
| Brakes (front/rear) | Beringer disc brakes, 195 mm stainless steel floating rotors |
| Chassis construction | SAE 4130 steel round tubing frame, TIG welded |
| Engine (Electric motor for alternatively fuelled vehicles) | 2008 / Honda CBR600RR (PC40) / 4 stroke in line four |
| Bore/stroke/cylinders/cc (Electric motor spec for alternatively fuelled vehicles) | 67mm 42.5mm 4 599cc |
| Fuel type (Type of Energy Storage for alternatively fuelled vehicles) | 98 octane unleaded gasoline |
| Fuel system (Accumulator Spec for alternatively fuelled vehicles) | Sequential injection, DTAfast S60 ECU, dynamometer calibrated |
| Max power/max torque | 56kW@11,000 rpm 55 Nm@7,200 rpm |
| Transmission | Single 520 Chain |
| Differential | Drexler Limited slip differential |
| Final drive | 3:1 |
