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Mechanical Drivetrain

  • Motor: 2x Bosch SMG 138/80 FSE on the rear axle
  • Power: 50 kW per motor
  • Transmission: self-developed 2-stage spur gear; transmission of 8.9
  • Cooling: separate cooling circuits for motors and inverter; AKG radiators; cooling agent: water



  • Wheel suspension: CFRP double wishbone axles
  • Upright: Topology-optimized aluminum investment casting structure made of AlSi7Mg0.6
  • Spring damper system: KW damper actuated via push rod and rocker, CFRP U stabilizer with titanium bending swords
  • Wheel hub: milled aluminum structure from EN AW 7075
  • Brake system: self-developed brake calipers for front and rear axle made of AlSi9Cu3, topology optimized, manufactured by DSLM process; steel brake disks
  • Rims: 13" CFRP-rim with aluminium rim star
  • Tires: 13" Continental C18 Slick
  • Wheelbase: 1530mm
  • Front and rear track width: 1200mm


  • Monocoque structure: sandwich construction made of magnesium and aluminum sheet and aluminum honeycomb; magnesium and aluminum inlays at connection points; weight: 22.5 kg
  • Rear frame: 5-piece aluminium investment casting structure consisting of gearbox and swing; material made of AlSi7Mg0.6
  • Accumulator housing: Electron beam welded aluminum accumulator housing
  • Pedals: Accelerator and brake pedal made of aluminium
  • Security structures: Main roll hoop made of steel, front roll hoop made of steel; crashbox made of an aluminum honeycomb
  • Ergonomics: CFRP seat; CFRP steering wheel; 6-point harness; pedals adjustable to driver size



  • Accumulator: total capacity of 7.0 kWh, 403.2 V maximum voltage, 288 lithium-polymer cells in a 96s3p connection, self-developed Battery Management System (BMS) in master slave design
  • Power electronics: 2x Bosch INV2.2 as a double inverter in a self-developed cast aluminum housing with pin-fin cooling structure
  • Low voltage system: Modular decentralized control system of self-developed control devices for:
    • Measured value acquisition
    • Driver interface
    • Vehicle supply
    • Vehicle dynamics control
    • Security systems
    12 V supply voltage via a HV DC/DC converter
    optional force sensors in the chassis to record the wheel contact forces
  • Driving dynamics control: consisting of torque vectoring, wheel-specific traction control and range control



  • CFD-optimized vehicle
  • Validated with load cells / flow visualization
  • Coefficient of Lift * A: -3.1 [m^2]
  • Lift / Drag: -2.4
  • Package weight: 13 kg including all covers
  • DRS in the rear wing
  • Highlights:
    • Rear wing connection on the less aerodynamically sensitive upper side of the profile
    • New side wing concept


World Ranking
10th place

Formula Student EAST
3. Overall
2. Cost and Manufacturing Event
5. Business Event
6. Design Event
3. Dynamic Overall
3. Endurance
4. Efficiency
4. Autocross
4. Skid Pad
7. Acceleration

Formula Student Austria
2. Overall
2. Cost and Manufacturing Event
6. Business Event
1. Endurance
4. Efficiency
5. Skid Pad

Formula Student Spain
8. Overall
4. Cost and Manufacturing Event
6. Endurance
6. Efficiency

Racetech Racing Team TU Bergakademie Freiberg e.V.