DRG Class 05
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| Power type | Steam |
|---|---|
| Builder | Borsig |
| Configuration | 4-6-4 |
| UIC classification | 2'C2' |
| Gauge | 4 ft 8½ in (1435 mm) |
| Driver size | 2,300 mm in diameter |
| Length | 26,265 mm |
| Locomotive and tender combined weight | 214 tons |
| Boiler pressure | 196.1 kPa (28.4 lbf/in²) |
| Fire grate area | 4.71 m² |
| Cylinders | 3 |
| Cylinder size | 450 mm in dia x 660 mm in stroke |
| Top speed | 200.4 km/h (175 km/h regular service) |
| Power output | 2,360 ihp avg / 3,400 ihp max |
| Career | Deutsche Reichsbahn / Deutsche Bundesbahn |
| Class | 05 |
| Number in class | 3 |
| Number | 001 – 003 |
| Delivered | 1935 – 1937 |
| Retired | 1958 |
The Deutsche Reichsbahn Gesellschaft's BR 05 (Baureihe, or series) was a 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 Europe.
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[edit] Pre WWII history
Since the success of the Diesel high speed trains like the Flying Hamburger in the middle of the 1930s, locomotive industrie worked on faster steam locomotives. After speed tests with a streamlined DRG Class 03 Borsig produced three engines:
- 05 001 in 1935, streamlined,
- 05 002 in 1935, streamlined, world speed record in 1936
- 05 003 in 1937, cab forward streamlined.
The locomotives did regular service in FD express passenger trains, e.g. FD 23 from Hamburg to Berlin. The design speed was 109 mph = 175 km/h. In 1944, the streamline plates were removed. 05 003 had been rebuilt and lost the cab forward design.
[edit] World high speed records
05 001 and 05 002 (mainly) were used for test runs from 1935 to 1936. Most of these runs were made on complete journeys between Hamburg and Berlin. On June 7, 1935 the 05 002 made a top speed of 119.1 mph = 191.7 km/h near Berlin. The same engine made six more runs with more than 110 mph with trains up to 254 t weight. On May 11, 1936 it set the the world speed record for steam locomotives after reaching 124.5 mph = 200.4 km/h on the track between Hamburg and Berlin hauling a 197 t train. The engine power was more than 3.400 ihp. This record was broken two years later by the British LNER Class A4 4468 Mallard engine.
On May 30, 1936 the 05 002 set an unbroken start stop speed record for steam locomotives: During the return run from a 190 km/h test Berin-Hamburg it did the 70.1 miles from Wittenberge to a signal stop before Berlin-Spandau in 48 min 32 s, meaning 86.66 mph average between start and stop.
[edit] Post-War history
After World War II, the three engines came to the engine shop in Hamm, Westfalia. Since there were only three specimens of the 05, DB thought to scrap them. But then the engines were sent to Krauss-Maffei to be restored. 05 003 went into regular service in 1950, the other two in 1951. Boiler pressure was reduced to 16 bar (1600 kPa or 230 lbf/in²), hence the engines lost some of their old power. All three locomotives were used to haul express trains until 1958.
Mostly the 05 hauled the FD (long distance express) trains "Hanseat" and "Domspatz" on the run Hamburg - Cologne - Frankfurt. The regular top speed of the trains was 140 km/h. On this 703 km run the 05 operated trains did the longest run with steam traction in the DB network. July 1958 the 05 were replaced by the diesel-hydraulic DB class V 200.
05 001 went to the Verkehrsmuseum Nürnberg, where it can be seen streamlined with its original red livery. The other two locomotives were scrapped in 1960.
