Dual-clutch transmission in the transaxle configuration with the Torque Tube
The AMG 6.3-litre V-8 engine transmits its tremendous power to the rear axle via an especially lightweight drive shaft made of carbon -- similar to the DTM C-Class touring car. The dual-clutch transmission is located on the rear axle (in line with the transaxle principle) and is tightly connected with the engine housing by means of a Torque Tube. In the Torque Tube, a carbon camshaft rotates with the same speed as the engine. The advantages of this sophisticated solution include the rigid connection between the engine and the transmission, which results in an optimal response to forces and torques.
The new AMG SPEEDSHIFT DCT seven-speed sports transmission is responsible for the power transmission. This dual-clutch transmission is characterized by quick shifting without any interruption of traction -- minimum speeds of 100 milliseconds are possible. The driver has a choice of four different driving programmes: C (Controlled Efficiency), S (Sport), S+ (Sport plus) and M (Manual), as well as a RACE START function. During the Sport, Sport plus and Manual driving programmes, the automatic double-declutching function is active; all of these modes can be comfortably managed via the torque regulator in the AMG DRIVE UNIT. Optimal traction is guaranteed by the mechanical differential lock, which is integrated into the compact transmission housing.
Sophisticated chassis layout with double wishbone suspension
The solution that was chosen, a front-mid engine plus transaxle configuration, ensures an ideal weight distribution of 47 per cent in the front and 53 per cent in the rear. Mounting the engine behind the front axle provided optimal conditions for perfect handling dynamics with precise steering behaviour, top class agility, low inertia during sudden changes of direction and outstanding traction. The aim of Mercedes-Benz and AMG -- to build a desirable super sports car and combine flawless race circuit performance with the long distance comfort typical of Mercedes-Benz -- led to this sophisticated chassis layout. All four wheels are guided on dual A-arms with track rod, a technique that has proven itself in motor racing up to Formula 1 level. In a double wishbone suspension, the wheel location and suspension function are separated from each other, and the spring struts/damper struts are supported on the lower transverse link. With its high shatter strength and directional stability, the double wishbone concept decisively controls the wheel, with minimal springy movements, and gives the driver optimal contact with the road surface even in extreme situations.