
The six cylinder Adler had a streamlined body with a cW of merely 0,36…
The first car in a series where I delight you, dear reader, with my recent car drawings is the astonishing Adler 2,5-litre.
It showed its streamlined body on the 1937 Berlin Motor Show to a surprised public, and indeed it caused nothing short of a sensation. The Germans had a special name for the sloping roof saloon body: “Schiebedach Limousine”. It was designed by Karl Jenschke, who was until 1935 the director of Engineering at Steyr-Daimler-Puch. There he had created the Steyr 50, which also had a streamlined body akin to the Adler.

The Adler 2,5 litre was also available as a sleek cabriolet, built by Karmann in Osnabrück…
The Adler factory was situated in Frankfurt am Main. After the war, the management decided to stop with car production, as the factory had also been completely destroyed. Instead, it started manufacturing…typewriters.
But let’s turn back to the glorious days when Adler cars were rolling of the production lines.
Actually, the fast back saloon body was built by Ambi Budd in its factory in Berlin. The Adler Typ 10, as the car was officially known, was also available in two- and four door cabriolet bodies, which came from Karmann in Osnabrück.

A classic sidevalve straight six was powering the streamlined Adler…
A six cylinder for the Autobahn…
In 1937 the construction of the German Autobahnen was in full swing. This meant that the German automakers were keen on building cars meant for speed. The streamlined body was a first step, and the second one was providing sufficient power. So the Adler engineers opted for a 2,5 litre straight six, which otherwise was still fairly traditional with side valves and a four-bearing crankshaft. It offered a rather sedate 58 PS or 43 kW, but was nevertheless thanks to its streamlined body with a drag coefficient of merely 0,36 still 125 kph fast.
In 1938, a “Sport” version was offered. It had a two-door body that was lower and longer, built by Gläser-Karosserie in Dresden. It had the same 2,494 cc engine as the sedan, but had now THREE carburetors instead of one. Together with a higher compression ratio, 80 PS was achieved. It was offered for 8,750 Reichsmarks instead of 5,750 Reichsmarks for the standard Limousine. The stylish cabriolet version was costing only a few hundred Reichsmarks more.

A small Philips radio, proudly mentioning “Made in Holland” was placed close to the steering wheel column…
This Adler offered a few more futuristic touches like a compact Phillips car radio and a centrally located gear lever, emerging from the dashboard, later seen in the Citroën 2 CV…

The instrument panel was rather boldly styled with a central placed gearlever on the dashboard…
Comfort and handling were already quite sophisticated. The front suspension used wishbones and quarter-elliptical springs. The rear wheels were attached to a swing axle with a transverse leaf spring and tie rods. The differential was bolted to the frame. All four wheels used hydraulic shock absorbers and hydraulically controlled drum brakes. This Adler can indeed be used in today’s traffic without a hitch.

The engine hood consisted of two panels, which could be opened to reach the engine on both sides… the central part of the hood with its long profiles stayed fixed.
Despite its futuristic qualities and ingenuity, the actual sales success did not materialize; from its introduction to the end of production in 1940, only 5,295 units were sold, all versions combined. Maybe this streamlined proved too modern for its age…Just enjoy the drawings!
Hans Knol ten Bensel


































































