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DKW Auto Union
Motor Cars
1950s
Germany

History

DKW F91 3=6 Sonderklasse

DKW F91 3=6 Sonderklasse

Production period:

1953 to 1957

Class :

Motor car

Body versions :

Saloon , Coupé ,Cabriolet , Kombi

Engines:

Petrol : 0.9 liter (25 kW)

Length:

4170-4225 mm

Width:

1520-1595 mm

Height:

1450-1555 mm

Wheelbase :

2350-2500 mm

Curb weight:

895 kg

The DKW F91 Sonderklasse (special class) was a car of Auto Union , which appeared in March 1953 at the International Motor Show (IAA) in Frankfurt.

History

The F91 had This internal name and largely corresponded to the DKW F9 planned for 1940 . While its predecessor, the DKW F89 in contrast to the IFA F9 was still had the two-cylinder engine of the DKW F8 (hence DKW F8-9 ), the F91 had a three-cylinder engine , therefore DKW F9-1 .This Larger 3=6 model built as a two-door saloon with front suicide type opening doors . Also a ‘pillarless’ coupe version and Cabriolet.

From March 1953 to September 1955, 57,407 sedans and coupes were produced in Dusseldorf, in addition Karmann produced 1550 two- and four-seater convertibles. The until June 1957 further produced Kombi Universal brought the total to 15.193.

From the DKW Meisterklasse with transversely mounted two-cylinder two-stroke engine, the special class distinguished first and foremost by a standing front of the front three-cylinder engine with 897 cc displacement and 34 hp (25 kW) and a new transmission along the rear axle. As before, it was a two-stroke engine with reverse purge and a partially synchronized transmission (2nd and 3rd gear). There was also the typical for DKW freewheel. The radiator was like the Meisterklasse behind the engine and not in front behind the radiator grille. Innovations were tilted telescopic shock absorbers on the rear axle axis .The advertising promised of the three-cylinder two-stroke engine smoothness and vibration freedom of a six-cylinder four-stroke, which was also approximately achieved. The standard consumption in accordance with DIN 70030 (at a constant three-quarters of the maximum speed, but no more than 110 km / h, on a level track) was relatively low at 7.8 l / 100.

Externally, the special class differed from its predecessor by a radiator grille with only five instead of nine transverse bars. From 1954 she was also available as a four-seater coupe with rear panoramic window , as seen at the 1953 IAA. The coupe had fully retractable side windows front and rear and no B-pillar (" hardtop coupe "). As special equipment details highlighted the advertising of the manufacturer flasher, gasoline watch and automatic switching on the interior lighting when opening the right door.with over 34 hp can achieve a top speed of more than 120 km/h
a great a special feature. An easily accessible unusual large trunk that holds numerous luggage also for long journeys.Convenient front passenger seat is located right next to the information for the adjustable heating and defroster system are located in the middle on the right Seat (LHD) backrest tilt completely forward.

 

Technical

  • DKW F91 Technical data 

    Vehicle type:

    DKW F91 special class

    Engine: 

    3-cylinder in-line two-stroke

    Displacement : 

    896 cm³

    Bore × stroke: 

    71 mm × 76 mm

    Power: 

    25 kW (34 hp) at 4000 rpm

    Compression: 

    6.5: 1

    Cooling: 

    Water cooling ( thermosyphon ), fan driven by V-belt

    carburetor: 

    1 Solex downdraft 40 PBIC

    Lubrication: 

    Fuel oil mixture 1:25

     

    Transmission: 

    3-speed gearbox * with freewheel (2nd and 3rd gear synchronized), steering wheel circuit

     

    Front suspension: 

    Wishbone below and high-lying transverse leaf spring, telescopic bumper

     

    Rear suspension: 

    Rigid axle ( stabilizer axis ) on trailing arms and high-lying transverse leaf spring, telescopic shock absorbers

     

    Body: 

    Box frame with all-steel body

     

    Steering: 

    Rack and pinion steering

     

    brakes: 

    hydraulically operated drum brakes, front duplex

     

    Wheelbase : 

    2350 mm (universal: 2500 mm)

     

    Track front / rear: 

    1190/1250 mm

     

    Wheel size: 

    5.60-15

     

    Dimensions L × W × H: 

    4225 mm × 1595 mm × 1450 mm (universal: 4170 mm × 1520 mm × 1555 mm)

     

    Net weight (without fuel): 

    895 kg

     

    maximum speed: 

    115 km / h (factory specification)

     
    • Towards the end of the relatively short construction period, a 4-speed gearbox was available (second to fourth gear synchronized).

Related

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Also read (Members)
  • Auto Union 1000 SP (1958-1965)
  • Auto Union 1000 (1958-1963)
  • Auto Union Type A (1934)
  • Auto Union race cars (1934-1939)
Vehicles launched in 1953 | German Automotive 1950s

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