DRG Class 61
The two German DRG Class 61 steam engines were express train locomotives specifically built by Henschel for the Henschel-Wegmann train in service with the Deutsche Reichsbahn. The Henschel-Wegmann train was an initiative of the German locomotive construction industry, intended to be able to demonstrate a powerful steam locomotive-hauled train alongside the emerging express diesel multiple units, such as the Hamburg Flyer.
| DRG Class 61 | ||
|---|---|---|
| Number(s): | DRG 61 001 | DRG 61 002 |
| Quantity: | 1 | 1 |
| Manufacturer: | Henschel | |
| Year of manufacture: | 1935 | 1939 |
| Retired: | 1952 | Rebuilt to 18 201 |
| Wheel arrangement (Whyte): | 4-6-4T | 4-6-6T |
| Axle arrangement (UIC): | 2′C2′ h2t | 2′C3′ h3t |
| Sub-class: | St 37.18 | St 38.18 |
| Length over buffers: | 18.475 m (60 ft 7.4 in) | 18.825 m (61 ft 9.1 in) |
| Gauge: | 1,435 mm (4 ft 8+1⁄2 in) | |
| Service weight: | 129.1 t (127.1 long tons; 142.3 short tons) | 146.2 t (143.9 long tons; 161.2 short tons) |
| Adhesive weight: | 56.7 t (55.8 long tons; 62.5 short tons) | 56.3 t (55.4 long tons; 62.1 short tons) |
| Axle load: | 19 t (19 long tons; 21 short tons) | 18.8 t (18.5 long tons; 20.7 short tons) |
| Top speed: | 175 km/h (109 mph) | |
| Indicated power: | 1,066 kW (1,430 hp) | |
| 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) | |
| Cylinder diameter: | 460 mm (18.11 in) | 390 mm (15.35 in) |
| Piston stroke: | 750 mm (30 in) | 660 mm (25.98 in) |
| Boiler overpressure: | 19.6 bar (1,960 kPa; 284 psi) | |
| Grate area: | 2.75 m2 (29.6 sq ft) | 2.79 m2 (30.0 sq ft) |
| Superheater area: | 69.2 m2 (745 sq ft) | 73.4 m2 (790 sq ft) |
| Evaporative heating area: | 151.65 m2 (1,632.3 sq ft) | 149.82 m2 (1,612.6 sq ft) |
| Brakes: | Hildebrand-Knorr automatic Schnellbahnbremse with auxiliary brakes and counterweight brake. Operating on both sides of all coupled and carrying wheels. | |
| Water capacity: | 17,000 L (3,700 imp gal; 4,500 US gal) | 21,000 L (4,600 imp gal; 5,500 US gal) |
| Fuel capacity: | 5.0 t (4.9 long tons; 5.5 short tons) coal | 6.0 t (5.9 long tons; 6.6 short tons) coal |
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