Posted on | November 30, 2011 | No Comments
The new SL Roadster by Mercedes-Benz is expected to be unveiled by the end of this year. Three are the innovative aspects: construction material, new wiper/washer system and “concert hall” sound experience. The new SL has in fact a new 89 percent aluminium bodyshell: non-aluminium parts include even lighter magnesium used for the rear panel while the A-pillars and roof frame are made from steel to ensure maximum safety in case of overturning. The aluminium structure has a better performance than steel since different types of aluminium were used depending on the function of each component and on the stress to support thus streamlining performance. The bodywork is 44% diecast aluminium, 17% aluminium extrusions, 28% aluminium sheet metal, 8% steel and 3% other materials. Many aluminium sheets are designed in order to be made 100% from recycled material thus leading to an 80% energy saving for their production. Assembly follows different methods and processes depending on the parts to combine and on their function thus reaching a higher degree of safety. The whole aluminium bodywork designed for this vehicle is 110 kg lighter than a comparable model made with the traditional technology: this means that the SL 350 and SL 500 are respectively 140- and 125-kg lighter than their previous models and, compared to other roadsters, the new SL offers a definitely better experience in terms of noise, vibrations and stiffness. Therefore SL gives a new meaning to this German car: S for sports and L for light, reduced weight for better dynamism and limited consumption.