DRG Class 99.21

DRG Class 99.21
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

See also

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