DRG Class 99.21

DRG Class 99.21
99 211
Number(s)	99 211
Quantity	1
Manufacturer	Henschel
Year(s) of manufacture	1929
Retired	1960
Wheel arrangement	0-6-0
Axle arrangement	C n2t
Type	K 33.6
Gauge	1,000 mm
Length over buffers	6,400 mm
Height	3,200 mm
Overall wheelbase	2,000 mm
Service weight	18.3 t
Adhesive weight	18.3 t
Top speed	30 km/h
Indicated Power	105 kW 140 PS
Driving wheel diameter	800 mm
Valve gear	Walschaerts (Heusinger)
No. of cylinders	2
Cylinder bore	310 mm
Piston stroke	400 mm
Boiler Overpressure	14 bar
No. of heating tubes	90
Heating tube length	2,550 mm
Grate area	0.60 m²
Evaporative heating area	29.6 m²
Water capacity	1.8 m³
Fuel	0.6 t coal
Parking brake	Counterweight brake
Locomotive brakes	Steam brake

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.

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

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

See also

• List of DRG locomotives and railbuses