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Southern State Railway “Seraing”
Austria-Hungary | 1851 | only one produced

The “Seraing” was one of the four locomotives that took part in the Semmering competition. Its name came from the Belgian city where its manufacturer was based. It had two complete boilers which met in the middle at the firebox. Two power plants were each in a bogie. The locomotive thus anticipated the design of the Double Fairlie and is said to have basically met the requirements.

The biggest problem, however, was that the manufacturing methods for the flexible steam pipes at that time were not yet mature enough to remain permanently leak-proof. The amount of dry steam that could be extracted from the boiler was also said not to have been sufficient. It eventually finished third in the competition and was not used for long.

General
Built1851
ManufacturerCockerill
Axle config0-4-4-0T (Double Fairlie) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase26 ft 10 3/16 in
Fixed wheelbase6 ft 11 3/8 in
Service weight123,459 lbs
Adhesive weight123,459 lbs
Axle load30,865 lbs
Fuel capacitycoal
Power
Power sourcesteam
Estimated power335 hp (250 kW)
Optimal speed7 mph
Starting effort32,326 lbf
Power Plant
Driver diameter42.5 in
Boiler pressure104 psi
Expansion typesimple
Cylindersfour, 16 5/8 x 28 in
Boiler
Grate area23.7 sq ft
Evaporative heating area2,023.6 sq ft
Total heating area2,023.6 sq ft
Calculated Values
steam locomotive
freight
prototype
two-section
last changed: 03/2023
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