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Imperial-Royal State Railways and Austrian Southern Railway class 280
Italian State Railway class 478 and Yugoslav Railway class 07
| 1906 | 8 produced

Since the 2-8-0 locomotives of the class 170 were no longer powerful enough in express service on the Arlberg, Gölsdorf had the 2-10-0 class 280 built in the StEG locomotive factory from 1906 onwards. Initially there were only three machines with four-cylinder compound engines and Clench steam dryers. The Südbahn had five more built in Floridsdorf and used them on the Brenner.

The many driving axles ensured that the axle load remained below 14 tonnes. The smoke problem in tunnels was defused with an additional oil firing. The locomotives were able to pull trains of 280 tonnes at 32 km/h at 2.6 percent the Arlberg. On a test run with thicker tires, speeds of up to 92 km/h were reached on the flat and approval was given for 70 km/h.

Since the Clench steam dryer required extensive maintenance, no further class 280 locomotives were built and the steam dryers were removed again in 1918. Instead, the class 380 was built with a Schmidt superheater from 1909 onwards. Two of the three kkStB locomotives were later superheated by the BBÖ. The Südbahn locomotives came to the FS after the First World War and partly to the JDŽ after the Second World War.

General
Built1906-1911
ManufacturerStEG, Floridsdorf
Axle config2-10-0 (Decapod) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length59 ft 4 13/16 in
Length loco38 ft 8 1/16 in
Wheelbase28 ft 5 5/16 in
Fixed wheelbase16 ft 5 1/4 in
Total wheelbase48 ft 8 1/4 in
Empty weight154,323 lbs
Service weight170,197 lbs
Adhesive weight148,591 lbs
Axle load30,424 lbs
Water capacity4,491 us gal
Fuel capacitycoal
Power
Power sourcesteam
Indicated power1,628 hp (1,214 kW)
Optimal speed33 mph
Top speed43 mph
Starting effort31,788 lbf
with start valve38,146 lbf
Power Plant
Driver diameter55.5 in
Boiler pressure232 psi
Expansion typecompound
Cylindersfour, HP: 14 9/16 x 28 3/8 in
and LP: 24 13/16 x 28 3/8 in
Boiler
Grate area49.5 sq ft
Firebox area166.8 sq ft
Tube heating area1,932.1 sq ft
Evaporative heating area2,099 sq ft
Superheater area678.1 sq ft
Total heating area2,777.1 sq ft
Calculated Values
steam locomotive
express
Von Borries compound
Karl Gölsdorf
last changed: 02/2024
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