Tube 8

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Röhr 8 type F from 1933
Röhr 8 type F from 1933
8th
Production period: 1927-1934
Class : upper middle class
Body versions : Roadster , limousine , Pullman limousine , convertible
Engines:
Gasoline engines : 2.0-3.3 liters
(29-74 kW)
Length: 4255-4700 mm
Width: 1610-1750 mm
Height: 1650 mm
Wheelbase : 3055-3235 mm
Empty weight : 1030-1740 kg
Logo on the tube 8
Röhr 8 Type F streamlined limousine from Autenrieth from 1932
Röhr 8 Type RA convertible sedan from Autenrieth from 1931
Röhr-8 logo

The Rohr 8 is a car of the upper middle class , which the automobile company Rohr Auto AG brought out the 1927th The model was characterized by particularly good road holding, which was due to the rear swing axle ( pendulum axle ) and the long wheelbase . The rear axle was still behind the rear bench.

description

The front wheels were attached to an axleless construction with two transverse leaf springs. A swing axle with cantilever half-springs was used at the rear. The vehicle had an eight-cylinder OHV in - line engine installed at the front, which drove the rear wheels via a 3-speed gearbox. In contrast to the chassis, the 2-liter engine of the first type R 8/40 PS was not convincing: At certain speeds it tended to resonate vibrations and consumed a lot of gasoline and, above all, oil. In addition, the car's engine output of 40 hp was disappointing. Up to 1928 only about 100 copies were made.

In 1928 the engine was revised: its displacement increased to 2.3 liters and the output to 50 hp. This type was called Röhr 8 Type R 9/50 PS . The result was a little better, but the decisive breakthrough in the market did not materialize. Around 1000 cars were produced by 1930.

In 1930 the entire car was modernized: When the engine was further enlarged to 2.5 liters displacement and 55 hp, the cylinders were offset from one another by 10 ° in a V-shape ( VR engine ), which did not lead to a greater overall length despite the larger bore. ( Volkswagen applied the same principle in the early 1990s with the Passat VR6 and Golf VR6 models ). In addition, the body was significantly lengthened and widened. The new Röhr 8 type RA 10/55 PS could not be sold better, so that Hans Gustav Röhr had to file for bankruptcy in 1931. Neue Röhr AG , which was subsequently founded by the Swiss Röhr general agent Joos Andreas Heintz, had the car continued to be built until 1933, but no more than 350 copies were made.

The new owner then had Ferdinand Porsche design a completely new car. He had already completed construction documents from an order from Wanderer , but they were not used there. In 1933 the Röhr 8 type F 13/75 PS appeared . With its exterior dimensions enlarged again, it offered a 3.3-liter engine with 75 hp, which finally achieved the performance that one would expect from an eight-cylinder car. Nevertheless, only 250 cars had been delivered by 1934.

For those customers who wanted even more power, the Röhr Olympier type FK 13/75/100 PS appeared in 1934 . It had the same engine as the type F, but had a switchable Zoller compressor. The front wheels were guided on both sides with two rocker arms, the suspension was handled by two transverse torsion bars - this was the first time this principle was used in a production car. The elaborate construction made the car very expensive (14,500 to 16,500 Reichsmarks ) and after delivery of around 20 cars, production of the Röhr 8 was stopped in the same year 1934.

Technical specifications

Type 8 (8/40 hp) 8 type R (9/50 hp) 8 type RA (10/55 HP) 8 Type F (13/75 HP) Olympian type FK (13/75/100 HP)
Construction period 1927-1928 1928-1930 1930-1933 1933-1934 1934
Superstructures L4, Cb4 L4, Cb4, Cb2, R2 L4, Cb4, Cb2 L4, PL4, Cb4, Cb2 L4, PL4, Cb2
engine 8 cyl. Row 4 bars 8 cyl. Row 4 bars 8 cyl. Row 4 bars 8 cyl. Row 4 bars 8 cyl. Row 4 bars
Valves hanging (OHV) hanging (OHV) hanging (OHV) hanging (OHV) hanging (OHV)
Bore × stroke 58 mm × 94 mm 60 mm × 100 mm 63 mm × 100 mm 69.6 mm × 108 mm 69.6 mm × 108 mm
Displacement 1980 cc 2246 cc 2496 cc 3287 cc 3287 cc
Horsepower) 40 50 55 75 75 (100)
Power kW) 29 37 40 55 55 (74)
consumption 14 l / 100 km 14 l / 100 km 15 l / 100 km 17 l / 100 km 22 l / 100 km
Top speed 90 km / h 100 km / h 100 km / h 120 km / h 135 km / h
Empty weight 1030 kg 1080 kg 1400 kg 1600-1700 kg 1640-1740 kg
Perm. total weight 1530 kg 1580 kg 1950 kg 2200-2300 kg 2240-2340 kg
Electrics 6 volts 6 volts 6 volts 6 volts 6 volts
length 4255 mm 4255 mm 4600 mm 4700 mm 4700 mm
width 1610 mm 1610 mm 1690 mm 1750 mm 1750 mm
height 1650 mm 1650 mm 1650 mm 1650 mm 1650 mm
wheelbase 3055 mm 3055 mm 3155 mm 3235 mm 3235 mm
Front / rear track 1350 mm / 1350 mm 1350 mm / 1350 mm 1350 mm / 1350 mm 1400 mm / 1400 mm 1420 mm / 1420 mm
Turning circle 11 m 12.4 m 12.4 m

literature

Web links

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