The reference for locomotives and railcars
Great Central classes 9K and 9L
London & North Eastern classes C13 and C14
Great Britain | 1903 | 52 produced
9K No. 1055
9K No. 1055
Locomotive Magazine, April 1903

Between 1903 and 1905 the Great Central Railway procured a total of 40 class 9K tank locomotives for the suburban routes of London, which were based on the 2-4-2T class 9G tank locomotives and were designed by John G. Robinson. They were created by enlarging the boiler on the 9G and accommodating the extra weight and length by replacing the leadingaq axle with a bogie. They were stationed at London's Marylebone railway station and were distinguished by the fact that they were fitted with appropriate scooping devices for the water troughs introduced at the time to refill water during the journey. A further twelve class 9L locomotives followed in 1907. By widening the water tanks by three inches, they had a larger water capacity and the higher walls of the coal bunker meant that more coal could be carried.

The use in London did not last long, as the electric railcars could run at higher average speeds on competing routes and the steam locomotives therefore had to be more powerful. This led to the introduction of the class 9N with the 4-6-2T wheel arrangement from 1911. The 9K and 9L were subsequently moved to other locations and used, for example, on suburban routes from Manchester or in central England for regional trains. In 1914 and 1915, a 9L and a 9K were each fitted with a boiler with a superheater, but these initially remained one-offs.

9L No. 1120
9L No. 1120
Locomtive Magazine, July 1907

After the LNER took over operations in 1923, the classes were now designated C13 and C14. After a short time, shorter chimneys were installed to ensure suitability for the loading gauge of the entire LNER network. In addition, the scoops were removed because they weren't really necessary on short-haul routes. Between 1926 and 1935, all locomotives were given a new boiler with a superheater as part of the scheduled boiler replacement. British Railways took over all examples in 1948 and used them unchanged until the mid-1950s. New competition now arose in the form of the new diesel railcars, which soon made them superfluous. Almost all locomotives were scrapped between 1957 and 1959 and one locomotive of each class was used until 1960.

ManufacturerVulcan Foundry, Beyer, Peacock & Co.
Axle config4-4-2T (Atlantic) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase29 ft 10 1/2 in
Fixed wheelbase9 ft 1 in
Empty weight140,784 lbs
Service weight160,719 lbs
Adhesive weight70,896 lbs
Axle load41,440 lbs
Water capacity1,741 us gal
Fuel capacity8,176 lbs (coal)
Power sourcesteam
Estimated power600 hp (447 kW)
Optimal speed22 mph
Starting effort17,099 lbf
Power Plant
Driver diameter67 in
Boiler pressure160 psi
Expansion typesimple
Cylinderstwo, 18 x 26 in
Grate area20 sq ft
Firebox area110 sq ft
Tube heating area1,033 sq ft
Evaporative heating area1,143 sq ft
Total heating area1,143 sq ft
Calculated Values
steam locomotive
tank locomotive
John George Robinson
last changed: 04/2022

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