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Tyrolean State Railway “Achensee” to “Tirol”
Austrian Southern Railway class 18 (old) or 25
Austria-Hungary | 1856 | 8 produced
No. 594 “Ambras”
No. 594 “Ambras”

The Tyrolean State Railway built two lines, the northern one running between Innsbruck and Kufstein on the Bavarian border. Among the 26 locomotives purchased were eight Engerth-type supporting tender locomotives, which were intended for operation with freight trains. Their chassis consisted of three driving axles with a wheel diameter of 1,264 mm and a two-axle tender.

Five of the eight machines were given the names of places along the route. These were “Amras”, “Hall”, “Innsbruck”, “Kufstein” and “Martinswand”. The remaining three were called “Achensee”, “Inn” and “Tirol”. As early as 1859, just a year after the line opened, the Tyrolean State Railway was taken over by the Southern Railway. These locomotives were first renumbered as class 18 and later as class 25.

General
Built1856
ManufacturerMaffei
Axle config0-6-4-T (Engerth-Stütztender)
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Empty weight88,405 lbs
Adhesive weight76,280 lbs
Axle load25,133 lbs
Fuel capacitywood
Power
Power sourcesteam
Estimated power329 hp (245 kW)
Optimal speed15 mph
Starting effort14,210 lbf
Power Plant
Driver diameter49.8 in
Boiler pressure102 psi
Expansion typesimple
Cylinderstwo, 18 1/8 x 24 7/8 in
Boiler
Grate area17.2 sq ft
Evaporative heating area1,595.2 sq ft
Total heating area1,595.2 sq ft
Calculated Values
steam locomotive
freight
supporting tender
Engerth supporting tender
tank locomotive
last changed: 10/2023
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