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Great Northern (UK) class H1
Great Britain | 1899
20 produced
Railway and Locomotive Engineering, March 1900

The obsolescence of the existing freight locomotives on the Great Northern shortly before the turn of the century faced the problem that there was no free capacity in the local locomotive factories. Neither the own workshops in Doncaster, nor the commercial British factories were able to deliver any significant number in a timely manner. So they turned to Baldwin in the USA, which designed a freight locomotive for use in England.

While in Great Britain at that time ordinary freight locomotives were normally manufactured with a 0-6-0 wheel arrangement, mainline locomotives in the USA were always designed with a leading axle or bogie. Thus the new locomotive was a lightly built Mogul, which was delivered a total of 20 times in 1899. It corresponded mainly to American design principles and got a four-axle tender with bogies. Typically British features were the placement of the sandbox under the running boards and a British-design chimney.

Schematic drawing
Schematic drawing
Locomotive Magazine, November 1900

During operation, a somewhat high coal consumption and a very high consumption of lubricating oil were noticed. Despite the leading axle, their running was considered unsteady and due to the light construction, the continuous steaming performance did not have any significant advantages compared to earlier freight locomotives. Even the experimental use with London suburban trains from King's Cross did not bring convincing results. Thus, the decommissioning took place between 1909 and 1915, when enough freight locomotives from indigenous production were available.

General
Built1899
ManufacturerBaldwin
Axle config2-6-0 (Mogul) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase22 ft 8 in
Rigid wheelbase14 ft 9 in
Total wheelbase51 ft 7 in
Service weight100,700 lbs
Adhesive weight85,500 lbs
Total weight194,700 lbs
Axle load28,500 lbs
Water capacity4,203 us gal
Fuel capacity11,200 lbs (coal)
Boiler
Grate area16.7 sq ft
Firebox area120 sq ft
Tube heating area1,260 sq ft
Evaporative heating area1,380 sq ft
Total heating area1,380 sq ft
Power Plant
Driver diameter61.5 in
Boiler pressure175 psi
Expansion typesimple
Cylinderstwo, 18 x 24 in
Power
Power sourcesteam
Estimated power650 hp (485 kW)
Optimal speed22 mph
Starting effort18,808 lbf
Calculated Values
steam locomotive
freight
last changed: 07/2022
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