[Auto] Mercedes-Benz SLR McLaren

[S e u o n g]

 

The Mercedes-Benz SLR McLaren is a two-seater 2-door dihedral super sports car, produced by the German manufacturer Mercedes-Benz from 2003 to 2009. Its current price is around £ 300,000 or $ 495,000.

 

Features
The SLR has a center-front V8 engine positioned well behind the front axle of 5439 cm³ (5.4 liters), with double overhead camshaft (DOHC) timing for each cylinder bank and 3 valves per cylinder ( 24 in total), equipped with a Lysholm-type volumetric compressor with intercooler, which delivers a maximum power of 626 hp (617 HP; 460 kW) at 6,500 rpm and a maximum torque of 780 Nm (575 lbft) at 3250-5500 rpm. It is similar to that of the "55 AMG" versions of various Mercedes models.

The bodywork has two doors that open upwards, two seats and a little better standard equipment than, for example, an E-Class.

Technically, the most peculiar thing about the SLR McLaren is the frame, which consists of a carbon fiber part and, bolted to it, an aluminum structure that holds the engine and the front suspension.

It has a normal suspension, albeit made of aluminum, with coil springs and gas shock absorbers. It is not pneumatic as in the E-Class, nor does it have the body control system (ABC).

It can have three types of wheels: There are two wheels to choose from without surcharge, with 245/40 18-inch (45.7 cm) front tires and 295/35 18-inch (45.7 cm) rear tires. In addition, there is an optional third wheel in a turbine design with 245/35 19-inch (48.3 cm) front and 295/30 19-inch (48.3 cm) rear tires.

According to Mercedes, the SLR McLaren is "a contemporary interpretation of stylistic elements of the original SLR, with design details borrowed from Formula 1 in 2003."

Its disc brakes are carbon-ceramic vented, capable of maintaining their effectiveness up to a temperature of 1000 ° C (1832 ° F). The front ones are 370 mm (14.6 inches) in diameter with eight-piston calipers, while the rear ones are 360 mm (14.2 inches) with four-piston calipers.

It can accelerate from 0 to 100 km / h (62 mph) in 3.8 seconds, from 0 to 200 km / h (124 mph) in 9.9 seconds and from 0 to 300 km / h (186 mph) in 30, 6 seconds. Its top speed exceeds 334 km / h (208 mph) .1

Weighs 1693 kg (3732 lb) (DIN) .1 Its body has a Roadster version since September 2007.

 

Body and structure
Its length of 4656 mm (183.3 in) is similar to that of a CLK with 4638 mm (182.6 in). They also have a similar wheelbase: 2700 mm (106.3 in) for the SLR and 2715 mm (106.9 in) for the CLK. The width 1908 mm (75.1 in) and the height 1261 mm (49.6 in) are similar to those of other mid-front-engine sports cars, such as the Aston Martin Vanquish or the Ferrari 575M Maranello.

The aerodynamic study is made to ensure good stability at high speed, rather than a low coefficient of penetration. Consequently, the SLR McLaren has 0.374 Cx, but has negative Cz lift coefficients: 0.050 at the front axle and 0.089 at the rear.

Two of the methods to get the air to press the car against the ground are a nearly flat bottom and a movable rear wing. The bottom has deflectors that deflect part of the air and diffusers that accelerate it, to facilitate the flow of air in relation to the car.

The rear wing starts to unfold from 95 km / h (59 mph) and increases its inclination automatically, or manually via a control on the dashboard.

Mercedes-Benz refers to this spoiler as "airbrake" because, when the pressure in the brake circuit exceeds a certain limit, the spoiler takes its maximum inclination of 65 ° to provide an aerodynamic brake.

The frame is made of carbon fiber and aluminum. The passenger and rear safety cell is made of carbon fiber. Inside this carbon fiber structure there are integrated metal elements to hold the rear axle.

The front of the car, which forms the cradle of the engine and the supports for the front suspension, is made of aluminum. That structure is bolted to the carbon fiber one. Other methods of joining between the different pieces are glue and rivets.

Ahead of the aluminum frame are two conical carbon fiber stringers joined by a cross member. These side members have the function of collapsing in the event of a frontal collision, slowing down the collision as much as possible. These stringers are manufactured in the same plant as the car, using procedures from the textile industry.