DR 18 201
| DR 18 201 | |
|---|---|
18 201
|
|
| Number(s) | 18 201 since 1970: 02 0201-0 |
| Quantity | 1 |
| Manufacturer | RAW Meiningen |
| Year(s) of manufacture | 1960 |
| Wheel arrangement | 4-6-2 |
| Axle arrangement | 2'C1' h3 |
| Type | S 36.20 |
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Length over buffers | 25.145 m (82.50 ft) |
| Empty weight | 102.5 t (100.9 long tons; 113.0 short tons) (without tender) |
| Service weight | 113.6 t (111.8 long tons; 125.2 short tons) |
| Service weight incl. tender | 172 t (169 long tons; 190 short tons) |
| Adhesive weight | 62.3 t (61.3 long tons; 68.7 short tons) |
| Axle load | 20.8 t (20.5 long tons; 22.9 short tons) |
| Top speed | 180 km/h (110 mph) |
| Indicated Power | 1,581 kW (2,120 hp) |
| Driving wheel diameter | 2.3 m (7 ft 7 in) |
| Leading wheel diameter | 1.1 m (3 ft 7 in) |
| Trailing wheel diameter | 1.25 m (4 ft 1 in) |
| No. of cylinders | 3 |
| Cylinder bore | 520 mm (20 in) |
| Piston stroke | 660 mm (26 in) |
| Boiler Overpressure | 16.3 bar (1,630 kPa) |
| Grate area | 4.23 m2 (45.5 sq ft) |
| Superheater area | 83.80 m2 (902.0 sq ft) |
| Evaporative heating area | 206.30 m2 (2,220.6 sq ft) |
| Tender | 2'2' T 34 + additional tender |
| Water capacity | 34,000 l (7,500 imp gal; 9,000 US gal) |
| Fuel | 13,500 l (3,000 imp gal; 3,600 US gal) oil |
| Train heating | Steam |
The German express locomotive, number 18 201 of the Deutsche Reichsbahn in East Germany, appeared in 1960-61 at Meiningen Steam Locomotive Works as a conversion of the Henschel-Wegmann train locomotive 61 002, the tender from 44 468 and parts of H 45 024 and Class 41. It is the fastest operational steam locomotive in the world.
The motivation for the conversion was firstly that, as a one-off, locomotive 61 002 could not really be used for scheduled services, and secondly that the research institute at VES-M Halle urgently needed locomotives that could do at least 160 km/h in order to test passenger coaches.
For the conversion a DR Class 22 new-design boiler, parts of the unsuccessful high pressure locomotive, H 45 024, (outside cylinders, trailing wheels and rear section of the locomotive frame) as well as the tender of locomotive 44 468 were used. The inside cylinder of the three-cylinder engine was not however taken from 61 002, rather a new one was made. Other technical improvements were a Riggenbach counter-pressure brake and a Giesl ejector. The locomotive was streamlined at the front and over the boiler fittings.
The new locomotive was given its number to commemorate the first German locomotive with a 4-6-2 ('Pacific') wheel arrangement, the Baden IV f of the Baden State Railways (later the DRG Class 18.2).
...
Wikipedia