A 220SL the Mercedes 190SL brother that never made it

19 Май 2015 | Author: | No comments yet »
300 sl w127


220SL, the alternative to the 190SL in the

When talking about the we have to look first at the 190SL, which would probably have never built without the input of Max The Austrian born Hoffman was in New York and imported a variety of British cars to the US. When he into an agreement to sell the in the United States, he told executives that he needed another such car but this an open car with a smaller

The prototype (of two built) of the Mercedes was displayed next to the 300 SL Coupe at the Show in New York in February The response was clearly positive, so management decided to prepare the new car for They knew that Max was right, the Mercedes 190SL would a large enough customer

This Mercedes engineer in 1954, where the first differs from the final

Both photos courtesy of AG

The engine of the Mercedes 190SL was a four-cylinder 1.9 liter (116 cu which was in its basic concept for the Mercedes Benz 180 ponton It operated with two Solex carburetors and developed 105 hp at 5.700 The car could accelerate from 0 to 100 in 14.4 seconds and gave a top speed 172 km/h or 108 mph.

More than a year the initial unveiling, the Mercedes was finally presented in March at the Geneva Automobile Show. Its price in Germany was DM 16 500 .- ($ 4,125 The starting price in the United was slightly less than $ .-. This was more expensive the Jaguar XK140. Commemorating the Arrow racing cars, the car was in the year available only in metallic.

Daimler-Benz wanted to the car as a sports car, they had produced some 17 special that were supposed to in international races. But except for the and Casablanca race in 1955, hadn’t been much as the car was not approved by the FIA, the International Federation, for the GT category. Consequently the support was stopped and the name car slowly dropped from the

The Mercedes 190SL R was a mildly version of the SL and some 85 kg (187 lighter

Board member Dr. and some of his engineers did not give up on the of the Mercedes 190SL being a sports car That is why Goschel, who had developed the engine, was given the task to for suitable alternatives. As he had assisted the fuel injection of the 300SL M198, he naturally decided to some of the technology of that to a revised version of the M121 of the 190SL. The project received the designation M126 and was equipped a new cylinder head casting and a Bosch mechanical fuel When tested, it produced 117 hp 5,900 and 6,100 rpm. was just 12 hp more than the 190SL engine. And that was one of the why it was cancelled. The other reason was it would have been far too to produce.

Uhlenhaut suggested to use a bigger instead. In this case the engine of the 300 sedan. The task was to young Kurt Obländer, the who had developed the carburetion system of the His problem was that he couldn’t the big engine fit into the engine That bay was never designed for large power plants. But at the age of 27 you are shy of trying something unusual, so he to build a parts-bin engine. reading about it, it looked to a recipe from a cookbook: you take the 300 engine block, add to it car’s cylinder head and try to three Solex 32 PAIAT fit. You can’t use the injection of the 300SL, as it was too bulky (and way too Once you have accomplished add an air filter from the 300Sc. you fabricate a new intake manifold, pan, add a water pump and fit a new system. And this new concoction you try to now into the 190SL’s engine But it doesn’t fit! Well, you to cant it by fifty degrees. Et now it fits.

Initial tests showed the power output was 139 hp, but that was not yet for Obländer. So he worked on the engine and this time he was able to the output to a respectable 151 hp at a reasonable rpm. Now that engine to be tested in real life. So it was to enter a 190SL with engine in the 1956 Alpine Everybody was thrilled, because 151 hp under the hood, acceleration and top were far superior to the normal SL. Two remained though and one of them was a one.

The lesser one was the inferior distribution, which could been dealt with. The one was production costs for such an They would have prohibitive. Unfortunately and much to dislike, the project had to be cancelled But once you got an engineer excited, he give up so easily. And as there was sufficient support from top it was now the 2.2-liter six-cylinder M180 from the 220 ponton sedan was selected. After all it was lighter the 3.0-liter and was cheaper to produce. that’s what Uhlenhaut had in the first place. Only the output needed to be addressed. And by fuel injection and a touring camshaft, output could be increased to 117 hp. Problem was, the was again too long for the engine So body modifications were such as the bulkhead being by some 152 mm (6 in). Once the strength of the transmission tunnel had increased, the six-cylinder engine and a gearbox were assembled the sub-frame and positioned underneath the body shell. Two such were produced and they given the internal code As they were the fourth and trial cars with a engine, they were 190SL /4 and 190SL /5. The first to lay his hands on 190SL /4 was engineer Waxenberger. Like his boss Uhlenhaut, he just loved cars. That is why he was eager to the latest attempt to make the faster.

Coming back from his test run, he remarked he was happy with the speed and but that he felt the front were too soft for the heavier resulting in over-steering in fast He said that after he had an 80 kg ( 176 lbs) heavy bag in the trunk, the over-steering would disappear.

In 1956 it was time for some serious testing and this Rudolf Uhlenhaut and Formula One Karl Kling got behind the of the two Mercedes SL W127 on the famous of the Nürburgring. The car developed in the meantime 130 hp. lapped in perfect harmony one lap another in eleven minutes and nine seconds. Arthur who later became head of tried to follow them in a SL, but was constantly a good 25 seconds These results and further in the alpine area of the Gross the highest mountain in Austria, Nallinger to address his fellow members and propose to put the W127 as in the official Mercedes-Benz program and it ready for production. On 12 th of April it was decided at a board meeting to both Mercedes SL cars offered to Mercedes customers: the old and the more powerful 220SL.

But fate had it another way. was called Hans Moll. And Moll was works chief in He had bad news for Nallinger. He advised him the tooling needed to produce the new six-cylinder would not be ready on to meet the launch timetable. as head of overall development was now with a problem. Because the launch of the 220SL would that his other and more project, the development of the brand new and W112 series would be put in as well.

At a further meeting Moll he was told that if the of the W111 and W112 would as planned, the earliest for production of the to commence would be 1960. the board met again, Nallinger his concern that the new W111 had a completely new body manufacturing And this might interfere the production of the 220SL, which used the old 180 platform, on the opposite of the same assembly line. is why he proposed to halt the planned of the 220SL and prepare for a completely new with a brand new engine using the modern basis of the As the standard Mercedes 190SL was selling quite well its standard engine, his colleagues that proposal. This new known internally as W113, was development called 220SL and in 1963 as 230SL .

Later versions of the SL had an enlarged window similar to the 300SL

If you want to read much about the Mercedes 190SL and Mercedes models of the 1950s and all of that is covered in my books and and can be ordered from my website . offer next to the cars’ the experience to own one of these great and have plenty of (non color pictures, most of have never been in a book before. I am sure you enjoy.

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