Lemfoerde, Germany -- New 300 HP German sports car Artega GT has a power-to-weight ratio of 3.72 kg/HP, made possible partly because the two-seater is the first series-production vehicle in the world to have a body made completely of polyurethane.
The chassis was developed by Artega of Delbrück, Germany, in co-operation with polyurethane experts at BASF subsidiary Elastogran, of Lemfoerde.
The lightweight frame and body is manufactured by German automotive plastics experts such as Erwin Friedmann Kunststoffwerk GmbH in Offenburg and Automobil- und Kunststofftechnik GmbH in Hörselberg, Elastogran said.
Mudgards, rear end, front and side parts of the sports car are made of Elastolit, a carbon fibre-reinforced, microcellular PU system from Elastogran, which the company says has great robustness and impact resistance, even at extremely low temperatures.
The parts were made using RIM (reaction injection moulding) technology, where the two-component, liquid, highly reactive PU system is injected into a closed tool in one second and the finished part is demoulded after only 15 to 30 seconds. PU RIM materials maintain a low viscosity and so have excellent flowability during the reaction time - which Elastogran points out is a key feature in making parts with complicated component geometries and sophisticated designs.
RIM technology makes it possible to produce thin prefabricated parts with inherent rigidity. The low thermal expansion coefficient of the fibre-reinforced PU system ensures a high accuracy of fit and an extreme dimensional stability under heat, Elastogran said. Its high surface quality means lightweight material is ideally suited for Class A finishes of visible free-form surfaces.
Fuel consumption for the Artega GT is only 8.9 litres (super plus ROZ 98)/100 km, which translates into CO2 emissions of only 211 g/km. But it has an acceleration speed of 4.8 seconds from 0 - 100 km/h and a top speed of 270 km/h.