Mercedes-AMG SL received several innovations in the chassis at once – DRIVE

In full accordance with the announcement, roadster Mercedes-AMG SL debuted in the seventh generation. The company has already talked in detail about power frame newbie, revealed its interior. It is not a surprise for a long time and the landing formula 2 + 2, to which the SL returned a couple of decades after the fourth generation (R129, 1989-2001). Like the appearance at “es-el” all-wheel drive and a return from the hardtop to the soft top. So the main interest is the powertrain.

The body uses a combination of aluminum alloy, steel, magnesium and a composite that combines glass and carbon fiber. Air resistance coefficient – 0.31. The soft top is 21 kg lighter than the previous metal one and transforms in 15 seconds at speeds up to 60 km / h.

The car is presented in versions SL 55 4Matic + (gray sample in the pictures) and SL 63 4Matic + (red) with a V8 4.0 biturbo engine. The first has 476 hp. (700 N • m), the second has 585 hp. (800 N • m). Both are combined with a nine-speed automatic AMG Speedshift MCT 9G with a wet multi-plate clutch for starting and all-wheel drive.

The Germans consider the interior to be a mixture of “analog forms and the digital world” (“hyperanalogue”). The tidy has a diagonal of 12.3 inches, the central screen is 11.9 inches. It can be tilted electrically to reduce glare. Options include a head-up display. The rear seats will comfortably accommodate passengers up to 1.5 m tall, so more often the seats here will be used as an additional compartment for bags.

With a curb weight of 1950 kg (with a driver), the SL 55 gains a hundred from zero in 3.9 seconds and develops a maximum speed of 295 km / h. For the older brother SL 63, the parameters are 1970 kg, 3.6 s, 315 km / h. Combined cycle fuel consumption for both is 11.8-12.7 l / 100 km. The plug-in hybrid SL is just announced for the future. Here you can pre-focus on Mercedes-AMG GT 63 S E PerformancePowered by a V8 4.0 engine, an electric motor on the rear axle with a combined output of 843 hp. and 1470 N • m, as well as a traction battery with a capacity of 6.1 kW • h.

The discs of the new composite brake system are lighter than the previous ones and feature innovative directional perforations that provide better heat dissipation, faster response in wet conditions and better shoe cleaning.

The SL 55 has a new steel AMG Ride Control suspension with lighter coil springs and aluminum shock absorbers (the latter have two stepless valves to adjust the compression and rebound force independently of each other). For the first time on production AMG cars, the front suspension is five-link, with the levers fit inside the rim. The rear suspension is also five-link. The SL 63 uses the AMG Active Ride Control suspension with an active hydraulic anti-roll bar system. For the first time on an SL, a steerable rear axle has been introduced.

The parameters of the braking system are the same for both versions. The front discs measure 390 mm in diameter and are fitted with fixed aluminum six-piston calipers. Rear – 360 mm single-piston floating.

Among the innovations, it is worth noting active aerodynamics. The Airpanel adjustable louver system has become a two-piece system: the plates behind the lower and upper air intakes open separately. Moreover, they are normally closed, and only when certain temperatures are reached, the nodes begin to open. And the active rear spoiler has five positions (from –11 degrees to +22). The electronics select the optimum based on vehicle speed, longitudinal and lateral acceleration and steering wheel speed. Efficiency can be improved with an aero package that adds perimeter elements and an enlarged diffuser.

History Robert Yessenov, Leonid Popov

The history of the Mercedes SL model goes back to 1954 – it was then at the New York Auto Show that the Germans presented the two-door Mercedes 190 SL. You can imagine the level of aesthetic shock to the visitors of the then motor show. Under the body of captivating beauty was a shortened platform from the Mercedes W120 Ponton sedan and a steel monocoque. The suspension was completely independent – with a double wishbone at the front and swinging axle shafts at the rear. Length – 4290 mm, distance between axles – 2400 mm. The open car Mercedes 190 SL was called a convertible because of the three-seater cabin layout.

The engine was installed alone – a new four-cylinder unit with a working volume of 1.9 liters. The “four” was obtained by cutting off two cylinders from the in-line motor of the 300 SL Gullwing roadster. The two engines have the same bore (85mm), but the stroke has decreased from 88mm to 83.6mm. On the “one hundred and ninety” engine, equipped with two Solex carburetors, it produced 105 forces and 142 N • m. The convertible (dry weight – 1160 kg) was equipped with a fully synchronized “mechanics” with four stages and could accelerate to 171 km / h. Cars with a soft top (price – $ 3998) and with a removable hard top ($ 4295) were available to buyers. Production in Stuttgart went on from 1955 to 1963, and a total of 25,881 cars were made.

The second generation Mercedes SL roadster with a soft and hard top lasted the same eight years at the Stuttgart plant (1963-1971), but was much more popular – 48,912 cars sold. What’s the secret? Obviously not in the changed design – the enchanting femininity has disappeared in the image. But the Germans compensated by expanding a number of versions. Built on the basis of the Mercedes W111 sedan (stylistic details are borrowed from it), the two-door, the length of which was 4285 mm (base – 2400), was equipped at different times with three motors.

Modification 230 SL (1963-1967) received a “six” with a volume of 2308 cm³, equipped with mechanical Bosch injection and developing 150 forces and 196 N • m. The 250 SL version (1966-1968) was equipped with an aspirated 2.5 M129.II. Recoil – 150 “horses” and 216 N • m. And from 1967 to 1971, buyers were offered the performance of the 280 SL – with the “six” M130 with a volume of 2.8 liters, 170 forces and 244 Newton meters. And the increase in sales was greatly influenced by the fact that SL roadsters were finally equipped with a four-band “automatic”, which increased the popularity of the model in the States. By the way, 280 SL (23,885 cars) became the best selling version, and 250 SL (5196) became the least sold.

The next Mercedes SL (R107 series) is a star car! The two-door, which was born in 1971, fell in love with wealthy people, especially in the New World. The sophisticated roadster was often shot in Hollywood films, and employees of the dream factory often became its buyers. The basis of the car is the platform of the large Mercedes W114 sedan with fully independent suspensions and anti-roll bars. Front – double wishbones, rear – swinging axle shafts with a compensation spring. From nose to tail, 4390 mm fit, width and height were 1790 and 1300 mm, respectively. The wheelbase has increased to 2460 mm.

The roadster borrowed engines from the flagship of the Mercedes line – the S-class sedan (W116). And there were as many as eight of these motors in different years! For in-line “sixes” were units 2.8 (185 forces, 238 N • m) and 3.0 (188 and 255). The tribe of “eights” consisted of motors 3.5 (200 forces, 286 N • m), 3.8 (218 and 299), 4.2 (218 and 392), 4.5 (225 and 377) and 5.6 (240 and 402). Gearboxes – four- and five-speed “mechanics” ZF, as well as “automatic” with three and four gears. The dry weight of the model varied from 1530 to 1690 kg. The third generation Mercedes SL Roadster is a long-lived conveyor. Production in Sindenfilgen ceased in 1989. The total circulation is over 237,287 cars.

The model Mercedes SL series R129 is considered by many to be one of the most beautiful in the history of the company from Stuttgart. Even now, well-groomed specimens make casual passers-by turn their necks. The roadster debuted in 1989. It was based on a shortened “trolley” model Mercedes E-class series W124. The front suspension consisted of wishbones and shock absorbers and springs spaced apart from each other (for the SL 500 version, electronically controlled shock absorbers could be ordered, which were standard equipment for the SL 600), the rear was a five-link design with an anti-roll bar.

The first years of the car were equipped with engines I6 3.0 (190-231 power), V8 5.0 (326) and V12 6.0 (394). After restyling in 1992, the 300 SL was replaced by the SL 280 (I6 2.8, 197 hp) and SL 320 (I6 3.2, 219) versions. The second update in 1998 brought the model a slightly retouched exterior and new engines for modifications SL 280, SL 320 and SL 500. They were assigned units with a capacity of 204, 224 and 306 “horses”.

Standing apart were AMG cars based on the SL model – SL 60 AMG (V8 6.0, 381 hp), the super-exclusive SL 73 AMG (V12 7.3, 525) and SL 55 AMG (V8 5.4, 354).

“Mechanics” was originally equipped with only “two hundred and eightieth” SL, the rest was put on an automatic transmission (four or five steps). The list of equipment included four airbags, a stabilization system, climate control, leather-trimmed seats, a navigation system with a Bose audio system and electrically adjustable front seats. Until 2001, 213,089 cars were made.

The “fifth” Mercedes SL (4534 mm in length, base – 2560 mm) is not the most popular in the history of the model – from 2001 to 2011, almost 170 thousand cars were assembled in Germany and Mexico. But the number of modifications makes the head spin. The two-door, built using elements of the Mercedes S-class W220 in the chassis, until 2006 had versions SL 350 (245 hp), SL 500 (306), SL 600 (500), SL 55 AMG (476) and SL 65 AMG (612). After this date, the output of the engines of the SL 350, SL 500 and SL 600 versions was 272, 388 and 517 forces, respectively, and for the SL 55 AMG and SL 65 AMG versions – 517 and 612 “horses”.

In 2008, the second restyling took place, after which the SL 280 / SL 300 modifications (231 “horses”) appeared in the range, and the SL 350 and SL 63 AMG versions received 316 and 525 hp each. respectively. The manual gearbox fell out of the cage – only five- and seven-band “automatic machines” remained in the lineup, as well as an automated AMG Speedshift MCT gearbox with a wet clutch package instead of a torque converter (these were installed on the SL 63 AMG).

Mercedes SL 63 AMG and SL 65 AMG sports cars are bright cars. But even they pale in comparison to the Mercedes SL 65 AMG Black Series supercar. Closed carbon fiber body, 670-horsepower V12 engine with two turbines (1000 N • m) and a structure lightened by 250 kg.

The sixth generation was released at the end of 2011. Vehicle with index R231 received a body, 89% made of aluminum alloy, resting on an upgraded S-class platform. This alone saved the model 100 kg, but in general, the difference in weight between the newcomer and its predecessor in comparable versions reached 140 kg. Engines (V6 3.0 and 3.5, V8 4.7 and 5.5, V12 6.0) were combined with a seven-speed “automatic”.

Depending on the year, the range included the usual versions of the SL 350, SL 400 and SL 500 (from 306 to 455 hp), as well as the AMG versions of the SL 63 (564-585 hp) and SL 65 (630 forces). Shown here is the 2012 SL 500 and 2015 SL 63.

In the fall of 2015, the model survived restyling, which made it from the front somewhat similar to Mercedes-AMG GT, and the steering wheel and multimedia system were updated in the cabin. The SL 400 and SL 500 versions added 34 and 20 forces (up to 367 and 455 hp). The most significant change was the replacement of the seven-band “automatic” with a nine-speed one (but the AMG models remained with seven gears).

Source: DRIVE.RU by

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