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War Department Austerity 2-10-0
British Rail Standard class 8F
Great Britain | 1943 | 150 produced
NS 5009 in Utrecht in the year 1947
NS 5009 in Utrecht in the year 1947
Het Utrechts Archief / NS 5009 (Ex-WD locomotive No. 73669) in Utrecht

Similar to the German class 52, the 2-10-0 from the British War Department's austerity program was a ten-coupled, light-footed goods locomotive for use in World War II. It shared cylinders with the Austerity 2-8-0, but featured an additional coupled axle. Due to the same driver diameter, the length of the locomotive was increased and the weight increased by about eight tons, but the axle load fell to 13 tons 9 cwt. While the firebox on the 2-8-0 was located between the wheels of the two rear coupled axles, on the 2-10-0 it was shorter, wider and positioned above the wheels.

Of the 150 built, the majority saw service in France after D-Day to support the British Army. 20 of the first batch had already been delivered to the Middle East for the same task. After the end of the war, most of them stayed abroad. A total of 103 pieces came from France to the Netherlands and were used there by the NS as class 5000. Four remained in Syria as class 150.6 of the CFS and 16 in Greece as class Λβ of the SEK. Eight survived in Greece in varying condition, two of which were later returned to the UK.

In Britain, British Railways bought 25 from the War Department in 1948 and used them in Scotland. They were treated by BR like standard locomotives and classified in the second highest performance class 8F. Since their performance largely corresponded to the Austerity 2-8-0, which was available in larger numbers, both types were used together. From 1957 another engine from the Longmoor Military Railway joined them. All engines remained in service until May 1961, but the vast majority were retired in December 1962.

General
Built1943-1945
ManufacturerNorth British
Axle config2-10-0 (Decapod) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length67 ft 6 1/4 in
Wheelbase29 ft 8 in
Fixed wheelbase21 ft
Total wheelbase57 ft 1 in
Service weight175,392 lbs
Adhesive weight153,440 lbs
Total weight299,712 lbs
Axle load30,128 lbs
Water capacity6,005 us gal
Fuel capacity20,160 lbs (coal)
Power
Power sourcesteam
Estimated power1,700 hp (1,268 kW)
Optimal speed32 mph
Starting effort34,215 lbf
Power Plant
Driver diameter56.5 in
Boiler pressure225 psi
Expansion typesimple
Cylinderstwo, 19 x 28 in
Boiler
Grate area40 sq ft
Firebox area192 sq ft
Tube heating area1,759 sq ft
Evaporative heating area1,951 sq ft
Superheater area423 sq ft
Total heating area2,374 sq ft
Calculated Values
steam locomotive
freight
war locomotive
Robert Arthur Riddles
last changed: 01/2022
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