DRG Class 99.21

The only example of the German DRG Class 99.21 steam locomotive was built for the Wangerooge Island Railway on Wangerooge, one of the German-owned Friesian islands in the North Sea.

DRG Class 99.21
99 211
Number(s)99 211
Quantity1
ManufacturerHenschel & Sohn
Year(s) of manufacture1929
Retired1960
Wheel arrangement0-6-0T
Axle arrangementC n2t
TypeK 33.6
Track gauge1,000 mm (3 ft 3 38 in)
Length over buffers6,400 mm (21 ft 0 in)
Height3,200 mm (10 ft 6 in)
Overall wheelbase2,000 mm (6 ft 6 34 in)
Service weight18.3 tonnes (18.0 long tons; 20.2 short tons)
Adhesive weight18.3 tonnes (18.0 long tons; 20.2 short tons)
Axle load6.1 tonnes (6.0 long tons; 6.7 short tons)
Top speed30 km/h (19 mph)
Indicated Power105 kW (143 PS; 141 hp)
Driving wheel diameter800 mm (2 ft 7 12 in)
Valve gearWalschaerts (Heusinger)
No. of cylindersTwo
Cylinder bore310 mm (12 316 in)
Piston stroke400 mm (15 34 in)
Boiler Overpressure14 bar (1.40 MPa; 203 psi)
No. of heating tubes90
Heating tube length2,550 mm (8 ft 4 12 in)
Grate area0.60 m2 (6.5 sq ft)
Evaporative heating area29.6 m2 (319 sq ft)
Water capacity1.8 m3 (64 cu ft) or 1,800 litres (400 imp gal; 480 US gal)
FuelCoal: 600 kg (1,300 lb)
Parking brakeCounterweight brake
Locomotive brakesSteam brake

History

For hauling eight-wheeled passenger coaches a more powerful locomotive was needed. After the procurement of diesel locomotives in 1958 she remained for a time as a reserve engine. She carried number 99 211.

Today the locomotive is restored and is displayed as a monument on Wangerooge.

Technical Details

The inner frame of the locomotive was also used as a water tank. She was designed as a wet steam locomotive. The boiler had two shell rings and 90 heating tubes. The drive was achieved via a Walschaerts valve gear driving the third axle. The wheels on the centre axle were made without flanges to improve curve running.

The engine could hold 0.6 tonnes of coal in side tanks either side of the boiler, and 1.8 m2 of water in the frame and in an attachment to the coal bunker. The engine was first equipped with electrical lighting in 1953.

Literature

    • Werning, Malte (1999). Wangerooge: Die Inselbahn und ihre Geschichte. Gülzow: Lokrundschau Verlag. ISBN 3-931647-09-9.

    See also

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