RT13 Garage
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Mechanical Drivetrain

  • Motor: 2x Bosch SMG 138/80 FSE on the rear axle
  • Power: 50 kW per motor
  • Motor housing: aluminium investment casting and sand casting structure in AlSi7Mg0.6
  • 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 C19 Slick
  • Wheelbase: 1530mm
  • Front and rear track width: 1200mm


  • Monocoque structure: sandwich construction made of aluminum sheet and aluminum honeycomb; Magnesium and aluminum inlays at connection points; weight: 22 kg
  • Rear frame: 5-piece aluminium investment casting structure consisting of gearbox and swing; material made of AlSi7Mg0.6
  • Accumulator housing: consisting of CFRP sandwich and open cooling; weight: 4.5kg
  • Pedals: Accelerator and brake pedal made of aluminium; weight: 2 kg
  • Security structures: Main roll hoop made of steel, front roll hoop made of aluminium; crashbox made of an aluminum honeycomb and CFRP plate
  • Ergonomics: CFRP seat; CFRP steering wheel; 6-point harness; pedals adjustable to driver size



  • Accumulator: total capacity of 6.9 kWh, 394.8 V maximum voltage, 282 lithium-polymer cells in a 94s3p connection, self-developed Battery Management System (BMS) in master slave design
  • Power electronics: 2x Bosch INV2.2 as double inverter in cast aluminum housing
  • Low voltage system: Modular system of self-designed circuit boards for:
    • Measured value acquisition
    • Driver interface
    • Vehicle supply
    • Vehicle dynamics control
    • Security systems
    Supply by a HV DC/DC converter
    optional wheel carrier acceleration sensors to optimize the chassis setup
  • Driving dynamics control: consisting of torque vectoring with yaw rate control, wheel-specific traction control and range control; cycle time 2 ms



  • CFD-optimized vehicle
  • Validated with load cells / flow visualization
  • Coefficient of Lift * A: -4.1 [m^2]
  • Lift / Drag: -2.6
  • Package weight: 14 kg including all covers
  • DRS in the rear wing
  • Highlights:
    • 3D front wing profile adapted to different flow areas
    • Wheel covers for tire wake control
    • laminated printed connections in front and rear wing


World Ranking
4th place

Formula Student Germany

3. Overall
2. Endurance
4. Autocross
4. Efficiency

Formula Student EAST

3. Overall

3. Dynamic Overall
4. Endurance
4. Efficiency
6. Autocross
8. Skid Pad
8. Acceleration

8. Static Overall
8. Cost and Manufacturing Event

Formula Student Austria

4. Overall
4. Endurance
4. Efficiency
5. Acceleration
7. Autocross
8. Skid Pad

5. Cost and Manufacturing Event
7. Design Event

Racetech Racing Team TU Bergakademie Freiberg e.V.