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Mechanical Drivetrain

  • Motor: 2x Bosch SMG 138/80 FSE on the rear axle
  • Power: 25 kW per motor
  • Transmission: self-developed 2-stage spur gear; transmission of 7.88
  • Cooling: separate cooling circuits for motors and inverter; AKG radiators; cooling agent: water



  • Wheel suspension: CFRP double wishbone axles
  • Upright: topology optimized aluminium structure, manufactured via investment casting
  • Spring damper system: Öhlins TTX25 MK2 Dampers actuated via pull rod (front axle), push rod (rear axle) 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 AlSi7Mg0.6, topology optimized, manufactured by investment casting; steel brake disks
  • Rims: 13" CFRP-rim with magnesium rim star
  • Tires: 13" Continental C16 Slick
  • Wheelbase: 1530 mm
  • Front track width: 1200 mm
  • Rear track width: 1160 mm


  • Monocoque structure: sandwich construction made of magnesium and aluminum sheet and aluminum honeycomb; magnesium and aluminum inlays at connection points
  • Rear frame: 5-piece aluminium investment casting structure consisting of gearbox and swing; material made of AlSi7Mg0.6
  • Accumulator housing: consisting of GFRP sandwich structure
  • 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 7.1 kWh, 403.2 V maximum voltage, 192 lithium-polymer cells in a 96s2p 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
  • Low voltage system: Modular decentralised control system of self-designed circuit boards for:
    • Measured value acquisition
    • Driver interface
    • Vehicle supply
    • Vehicle dynamics control
    • Security systems
    12 V supply voltage via a HV DC/DC converter
  • Driving dynamics control: consisting of torque vectoring, wheel-specific traction control



  • CFD-optimized vehicle
  • Package weight: 13.2 kg including all covers
  • Sideplates made of CFRP and aramid honeycomb sandwich structure
  • DRS in the rear wing


Formula Student Germany
1. Cost Report

Formula Student Spain
7. Autocross
9. Skid Pad

Formula Student Austria
5. Cost Report

World Ranking
40th place

Racetech Racing Team TU Bergakademie Freiberg e.V.