"A difference between success and failure is a matter of a few microns," says Andreas Ladner. He heads the mechanical section of the Formula Student team "DHBW Engineering" at Stuttgart University of Applied Sciences. For the car for the 2025 race season, the team asked Paul Horn GmbH for help in manufacturing components for the "eSleek25". The machining of the aluminium hub carriers for the race car posed a particular challenge. HORN Product Manager Patrick Artelt took on this challenge and developed a tool and machining concept together with specialists from HORN's production department. "The task was tricky. The component geometry is very complex and the required tolerances are to within a few microns," says Artelt.

The performance data of the Formula Student race car "eSleek25" is sure to make the hearts of sports car fans beat faster. All four wheels are directly driven by individual 38 kW electric motors. Together, the four motors deliver an output of 152 kW (around 204 HP) and catapult the car from zero to 100 km/h (62 mph) in 2.2 seconds. In total, the hub motors deliver an impressive torque of 1,400 Nm. For racing, however, the power output is limited to a maximum of 80 kW. The components for the electric drive are proprietary developments of the team. Only the individual battery cells have been bought in. The battery has a capacity of 6.82 kWh at an on-board voltage of 600 volts.