The reference for locomotives and railcars


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Emperor Ferdinand Northern Railway “Koloss” and “Elephant”
later series I No. 308 and 309
Austria-Hungary | 1844 | 2 produced

After the KFNB had ordered the first five freight locomotives in the 0-4-2 wheel arrangement in England at the end of the 1830s, they began to manufacture their own freight locomotives in Wiener Neustadt in 1844. Based on the 4-2-0 type from Norris, the bogie was converted into a fixed frame part and the second leading axle was replaced with a coupled axle. The cylinders continued to be fixed in an inclined position next to the smokebox and still drove the rear axle. Because of the low-lying boiler, the deep firebox reached just above the top of the rails.

The engines were given the names “Koloss” and “Elephant” and were delivered in 1844. In 1853 and 1865 they received new boilers with a larger heating surface. Although they were normally only known by their names, they were internally numbered 43 and 44. According to the new scheme from 1869, they were classified as Series I and given the numbers 308 and 309. They were phased out two years later.

Variantas builtnew boiler
ManufacturerWiener Neustadt
Axle config2-4-0 (Porter) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length24 ft 8 5/16 in
Wheelbase11 ft 7 in
Fixed wheelbase11 ft 7 in
Empty weight48,502 lbs
Service weight54,234 lbs54,454 lbs
Adhesive weight39,904 lbs
Fuel capacitycoal
Power sourcesteam
Estimated power134 hp (100 kW)148 hp (110 kW)
Optimal speed10 mph11 mph
Starting effort8,981 lbf8,325 lbf
Power Plant
Driver diameter46.5 in
Boiler pressure99 psi91 psi
Expansion typesimple
Cylinderstwo, 15 x 22 1/8 in
Grate area9.9 sq ft12.1 sq ft
Firebox area66.7 sq ft80.7 sq ft
Tube heating area749.2 sq ft803 sq ft
Evaporative heating area815.9 sq ft883.7 sq ft
Total heating area815.9 sq ft883.7 sq ft
Calculated Values
steam locomotive
last changed: 10/2022

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