DRG Class 05
| DRG Class 05 DB Class 05 |
|
|---|---|
05 001 Brockhaus 1938
|
|
| Number(s) | 05 001-003 |
| Quantity | 3 |
| Manufacturer | August Borsig Werke (Berlin-Tegel) and Borsig Lokomotiv Werke (Hennigsdorf) |
| Year(s) of manufacture | 1935, 1937 |
| Retired | 1958 |
| Wheel arrangement | 4-6-4 |
| Axle arrangement | 2'C2' h3 |
| Type | S 37.19 |
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Length over buffers | 26.265 m (86 ft 2 in) |
| Height | 4.45 m (14 ft 7 in) |
| Empty weight | 118.5 t (116.6 long tons; 130.6 short tons) |
| Service weight | 129.9 t (127.8 long tons; 143.2 short tons) |
| Adhesive weight | 57.7 t (56.8 long tons; 63.6 short tons) |
| Axle load | 19.4 t (19.1 long tons; 21.4 short tons) |
| Top speed | 200.4 km/h (124.5 mph) |
| Indicated Power |
|
| Driving wheel diameter | 2,300 mm (90.55 in) |
| Leading wheel diameter | 1,100 mm (43.31 in) |
| Trailing wheel diameter | 1,100 mm (43.31 in) |
| Valve gear | Walschaerts (Heusinger) |
| No. of cylinders | 3 |
| Cylinder bore | 450 mm (17.72 in) |
| Piston stroke | 660 mm (25.98 in) |
| Boiler Overpressure | 20 bar (2.0 MPa; 290 psi) (reduced to 16 bar (1.6 MPa; 230 psi) in 1950) |
| No. of heating tubes | 106 |
| No. of smoke tubes | 24 |
| Heating tube length | 7.0 m (23 ft 0 in) |
| Grate area | 4.71 m2 (50.7 sq ft) |
| Radiative heating area | 18.5 m2 (199 sq ft) |
| Superheater area | 90 m2 (970 sq ft) |
| Evaporative heating area | 255.52 m2 (2,750.4 sq ft) |
| Tender | 2'3T37St |
| Water capacity | 37,000 L (8,100 imp gal; 9,800 US gal) |
| Fuel | 10 t (9.8 long tons; 11 short tons) |
The Deutsche Reichsbahn's Class 05 was a German class of three express passenger steam locomotives of 4-6-4 wheel arrangement in the Whyte notation, or 2'C2' in the UIC notation used in continental Europe. They were part of the DRG's standard locomotive (Einheitslokomotive) series.
Since the success of the Diesel high speed trains like the Flying Hamburger in the middle of the 1930s, locomotive industry worked on faster steam locomotives. After speed tests with a streamlined DRG Class 03 the Borsig locomotive factories produced three engines:
The locomotives did regular service in FD express passenger trains, e.g. FD 23 from Hamburg to Berlin. The design speed was 175 km/h (109 mph). In 1944, the streamline plates were removed. 05 003 had been rebuilt and lost the cab forward design.
05 001 and 05 002 were mainly used for test runs from 1935 to 1936. Most of these runs were made on complete journeys between Hamburg and Berlin. On 7 June 1935 the 05 002 made a top speed of 191.7 km/h (119.1 mph) near Berlin. The same engine made six more runs with more than 177 km/h (110 mph) with trains up to 254 t (250 long tons; 280 short tons) weight. On 11 May 1936 it set the world speed record for steam locomotives after reaching 200.4 km/h (124.5 mph) on the Berlin–Hamburg line hauling a 197 t (194 long tons; 217 short tons) train. The engine power was more than 2,535 kW (3,399 ihp)). This record was broken two years later by the British LNER Class A4 4468 Mallard engine.
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