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London, Midland & Scottish Stanier class 8F
Italian State Railway class 737 and Turkish State Railway 45151 to 45170
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Great Britain | 1935
852 produced
No. 8510, built in 1943 at Doncaster
No. 8510, built in 1943 at Doncaster
flickr/Historical Railway Images

Since the LMS needed powerful goods locomotives to reduce the need for double-heading, Stanier designed the 8F as a 2-8-0 goods variant of his 4-6-0 “Black Five”. So apart from the changed wheel arrangement with smaller drivers, they had a similar tapered boiler with a Belpaire firebox and a small dome. They were not only built for the LMS, but were also selected as the British standard locomotive in World War II and also were used in Italy and the Middle East.

The LMS itself received 331 locomotives directly, with many built in their own works at Crewe and Horwich. The LNER bought 68 more, 208 were built for the War Department and 245 were built for the Railway Executive Committee for use with other operators. So in total, 852 locomotives were built by the works of all “Big Four” railways and commercial manufacturers.

In the War, they did not come into service in France since this country had already been invaded by Germany when they were ready. In 1944, the Middle East Forces sent 15 to Italy. After the war they were bought by the Italian State Railways. Designated class 737, they only operated until the early fifties.

Greater numbers were used in Egypt, Iran, Iraq, Palestine and Turkey. There they were not always without problems since they had been designed for use in Britain, but all in all they delivered good performances. While Egypt and Iran withdrew them in the sixties, Iraq used them until the seventies and also the locomotives from Palestine were used by Israel Railways until 1973. Turkey numbered its 20 locomotives starting with 45151 and even used them until the eighties.

British Railways inherited a total of 666 locomotives of this class. They were also used for passenger trains up to 60 mph (97 km/h) and some also received specially balanced wheelsets and motion for fast, fitted goods trains. In 1964, 664 were still in service and the last 150 survived until 1968, the last year of British steam traction. From 14 locomotives surviving in different countries, eight are situated in the UK. Two of these had returned from Turkey and are right hand drive.

General
Built1935-1946
ManufacturerCrewe, Horwich, North British, Darlington, Doncaster, Swindon, Vulcan Foundry, Brighton, Eastleigh, Ashford, Beyer, Peacock & Co.
Axle config2-8-0 (Consolidation) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length63 ft 0 1/2 in
Wheelbase26 ft 7 in
Rigid wheelbase17 ft 3 in
Total wheelbase52 ft 7 3/4 in
Service weight161,504 lbs
Adhesive weight138,880 lbs
Axle load35,840 lbs
Water capacity4,804 us gal
Fuel capacity20,160 lbs (coal)
Boiler
Grate area28.7 sq ft
Firebox area171 sq ft
Tube heating area1,479 sq ft
Evaporative heating area1,650 sq ft
Superheater area215 sq ft
Total heating area1,865 sq ft
Power Plant
Driver diameter56.5 in
Boiler pressure225 psi
Expansion typesimple
Cylinderstwo, 18 1/2 x 28 in
Power
Power sourcesteam
Estimated power1,800 hp (1,342 kW)
Starting effort32,438 lbf
Calculated Values
Optimal speed35 mph
steam locomotive
freight
Willian Arthur Stanier
last changed: 05/2025
No. 8233, here in passenger service, was used in Iran during World War II and returned to England in 1952
No. 8233, here in passenger service, was used in Iran during World War II and returned to England in 1952
flickr/Historical Railway Images
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