Gräf & Stift SR
The Graf & pen SR 2 is a passenger car of the upper class which the automobile company Graf & pin brought out 1921st The car was initially a copy of a contemporary Rolls-Royce that the Austrian General Staff used during the First World War . After the intervention of Rolls-Royce, the design was modified several times until sufficient differences emerged.
The car had a side-controlled 6-cylinder engine installed at the front, which drove the rear wheels via a 4-speed gearbox. The in- line engine developed 75 HP (55 kW) at a speed of 1800 rpm.
In 1924 a revised version appeared, the Gräf & Stift SR 3 . Its engine of the same size developed 90 hp (66 kW) at 2000 rpm.
In 1926, the Gräf & Stift SR 4 switched to the overhead motor. With the same engine size, the new model developed 110 hp (81 kW) at 2400 rpm and accelerated the 2-ton car to up to 110 km / h.
In 1928 the series was discontinued after approx. 200 copies.
Technical specifications
Type | SR 2 | SR 3 | SR 4 |
Construction period | 1921-1924 | 1924-1926 | 1926-1928 |
engine | 6 cyl. Row 4 bars | 6 cyl. Row 4 bars | 6 cyl. Row 4 bars |
Valves | standing (sv) | standing (sv) | hanging (ohv) |
Bore × stroke | 115 mm × 125 mm | 115 mm × 125 mm | 115 mm × 125 mm |
Displacement | 7749 cc | 7749 cc | 7749 cc |
Horsepower) | 75 | 90 | 110 |
Power kW) | 55 | 66 | 81 |
consumption | |||
Top speed | 110 km / h | ||
Empty weight | 2000 kg | ||
wheelbase | 3800 mm |
literature
- Hans Seper : The Brothers Gräf. History of the Graef und Stiftautomobile . Verlag Welsermühl, Munich 1991, ISBN 3-85339-216-4 .
source
- Werner Oswald : German Cars 1920–1945 . 10th edition. Motorbuch Verlag, Stuttgart 1996, ISBN 3-87943-519-7 .