A HANDS ON STUDENT PROJECT
Under the umbrella of MAKE Projects in the EPFL, the EPFL Racing Team is among the biggest scale projects made on campus. For the members of the team, Formula Student is an excellent way to put into practice everything learned in theoretical courses during the many semesters of their university careers. These students are either designing systems from scratch or improving systems tested on previous cars. From software to hardware, each part is made to perform best on track. These single seaters being composed of numerous complex interconnected systems, this project is highly interdisciplinary and brings students from many engineering specialties together. By the end of their experience as part of the EPFL Racing Team, every member gains key practical and theoretical skills through building the engineering marvels that these race cars are!
ARTEMIS
May 25 we unveiled the newest addition to the EPFL RT family: Artemis. As the first hybrid-monocoque of the team, this car is a huge step toward new horizons. With torque vectoring and regenerative braking, Artemis promises to be more solid, safer and more efficient than our previous cars.
The team will be present at FS Switzerland in Zurich, FS EAST at Hungaroring, FS Germany in Hockenheim and FS Spain near Barcelona. Follow us to be updated on our adventures!
FACT SHEET OF Artemis
S4FRAME CONSTRUCTION CFRP skin aluminium honeycomb core front monocoque. Tubular steel from main hoop
MATERIAL Corex aluminium honeycomb sandwich panel (1mm skins)
OVERALL (L / W / H) 2986mm / 1551mm / 1169mm
WHEELBASE / TRACK (Front / Rear) 1570mm / 1371mm / 1403mm
WEIGHT WITH 68kg DRIVER (Front / Rear) 122kg / 149kg
SUSPENSION Double unequal length A-Arm. Adjustable Z style ARB. Rear push rod, front pull rod actued
TYRES (Front / Rear) Hoosier R25B 160*75
WHEELS (Front / Rear) 7x10, 22mm offset, 1pc magnesium rim
NUMBER OF MOTORS / LOCATION / MAX POWER 2 / Rear right, rear left / 52KW
MOTOR TYPE Emrax 188
MAX MOTOR RPM 8000
MOTOR CONTsOLLER Unitek Bamocar D3
MAX SYSTEM VOLTAGE 430V
ELECTRODE MATERIALS LiPo
COMBINED ACCUMULATOR CAPACITY 6.8 kWh
TRANSMISSION RATIO (PRIMARY / SECONDARY) 4.5 / 1
DRIVE TYPE Tripod
DIFFERENTIAL Electronic
COOLING 2 radiators mounted in sidepods without fans. 880cc. Dedicated to battery and to power module
BRAKE SYSTEM 4-Disk system, self developed rotors with 175mm diameter, adjustable brake balance
ELECTRONICS Self designed telemetry, multifunctional steering wheel, touchscreen dashboard
Mercury
The 2019 season’s battle-hardened team went to work on building the team’s second car: Mercury, which was completed in 2021. The new insider knowledge permitted us to improve the technology in the car, notably turning to composite fibre for the body and aero kit, as well as developing the electronics. Due to the COVID-19 pandemic, the 2020 FS racing season was cancelled, and the team had an extra year to perfect the design and manufacture. Although there were times quarantine prevented active work on the car, eventually the team again came together to build, in our new lab space on the EPFL Campus. Mercury went to FS Czech Republic, FS East and to FS Germany. Overall, the team celebrated a rule-compliant car which successfully completed the team’s first Endurance race on the Hungaroring in FS East! Since the competitions, Mercury has been used for testing: mainly checking the aero kit and verifying its maximum capacities. Now, it is being reutilized by the Driverless division to become the EPFL Racing Team’s first autonomous car.
FACT SHEET OF ORION
FRAME CONSTRUCTION Tubular space frame
MATERIAL E235 steel Tubing (round 25mm diameter and square 25x25mm)
OVERALL (L / W / H) 3002mm / 1432mm / 1200mm
WHEELBASE / TRACK (Front / Rear) 1570mm / 1250mm / 1250mm
WEIGHT WITH 68kg DRIVER (Front / Rear) 150kg / 196kg
SUSPENSION Double unequal length A-Arm. Push rod actuated horizontally oriented spring and damper
TYRES (Front / Rear) Avon 7.2/20.0-13 / Avon 7.2/20.0-13
WHEELS (Front / Rear) 7×13, 22mm offset, Al Rim, 4 stud bolt / 7×13, 22mm offset, Al Rim, 4 stud bolt
NUMBER OF MOTORS / LOCATION / MAX POWER 1 / Rear / 100KW
MOTOR TYPE Emrax 228
MAX MOTOR RPM 6000
MOTOR CONTROLLER Unitek Bamocar D3 700
MAX SYSTEM VOLTAGE 600V
ELECTRODE MATERIALS LiPo
COMBINED ACCUMULATOR CAPACITY 8.65 kWh
TRANSMISSION RATIO (PRIMARY / SECONDARY) 1 / 4,03
DRIVE TYPE 520 & 530 X-ring chain
DIFFERENTIAL Adjustable clutch pack limited slip diffe- rential
COOLING Single radiator, with fan on main-hoop bracing
BRAKE SYSTEM 4-Disk system, self made 220mm rotors,adjustable brake balance, AP racing callipers
ELECTRONICS Traction control, launch control, self developed BMS
Orion
The team first competed in 2019 with our car: Orion. At this point, the rookie team was formed of around fifty students. This first car was a major challenge, it had to be reliable : reducing the risk of electrical or mechanical failure. If this was achieved, the experiment of building a car for the first time would open the doors for future vehicles and competitions! The team completed a functioning and sturdy car with a complete aero kit, although the car was lacking in electronics, with in-house AMS and safety circuits that were not on point. We went to FS Spain in Barcelona and FS Germany in Hockenheim, although without much success. The most important thing was that the team had learned the true undertaking that making a Formula Student Car is. Additionally, we learned a vast understanding of the teamwork such projects require, as well as how to collaborate to tightly integrate all components of the car and the business.
FACT SHEET OF MERCURY
FRAME CONSTRUCTION Tubular space frame
MATERIAL Steel, 32kg
OVERALL (L / W / H) 3065mm / 1540mm / 1185mm
WHEELBASE / TRACK (Front / Rear) 1570mm / 1240mm / 1200mm
WEIGHT 223.5kg
SUSPENSION (Front / Rear) Double A-arms carbon suspension, pullrod / pushrod
TYRES Hoosier 43075 R25B 16.0 x 7.5-10
WHEELS (Front / Rear) 10” OZ magnesium rims with centerlock
NUMBER OF MOTORS / LOCATION / MAX POWER 2 / Rear / 52KW each
MOTOR TYPE Emrax 188
MAX MOTOR RPM 6500 rpm
MOTOR CONTROLLER Unitek Bamocar D3 400
MAX SYSTEM VOLTAGE 403V
ELECTRODE MATERIALS LiPo
COMBINED ACCUMULATOR CAPACITY 8.3 kWh
TRANSMISSION RATIO (PRIMARY / SECONDARY) 1 / 4,5
DRIVE TYPE Single stage planetary gearbox
DIFFERENTIAL Electronic differential with torque vectoring
COOLING Water cooled
BRAKE SYSTEM regen, adjustable brake balance, 175 mm self made floating discs
COMPETITIONS WITH mERCURY
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How can you become our partner
Send us an email at sponsoring@epflracingteam.ch or call us at +41 78 690 39 65.
For further information click here.