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Great Central class 13
Great Britain | 1900 | 6 produced
Locomotive Engineering, July 1900

The Great Central Railway Class 13 was the last single-driver express locomotive to be built in Britain and one of the last to see regular service. It was developed by Harry Pollitt, who called it Type X4. It had 7 feet 9 inches diameter wheels and had a boiler pressure of 200psi from the factory. Since, despite the sophisticated sanding system that was obligatory on the last singles, there was more power than could be converted into traction, the boiler pressure was soon reduced to 160 psi

When Pollitt retired in 1900 and John G. Robinson took over as chief engineer at GCR, the Class 13 was just being produced. Anticipating the imminent end of the singles, Robinson reduced the order from ten to six. These locomotives initially ran the important route from Sheffield to London, but were moved to Cheshire in 1903 and replaced by the 4-4-0 Robinson class D4 locomotives. Four examples were fitted with a superheater between 1915 and 1919, but they were all retired between 1923 and 1927.

Variantas builtsuperheated
General
Built19001915-1919
Axle config4-2-2 (Single) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length54 ft 9 in
Wheelbase22 ft 11 in
Total wheelbase45 ft 5 in
Service weight105,840 lbs111,664 lbs
Adhesive weight41,104 lbs
Total weight200,480 lbs207,984 lbs
Axle load41,104 lbs
Fuel capacitycoal
Power
Power sourcesteam
Estimated power750 hp (559 kW)850 hp (634 kW)
Optimal speed26 mph37 mph
Starting effort18,072 lbf14,458 lbf
Power Plant
Driver diameter93 in
Boiler pressure200 psi160 psi
Expansion typesimple
Cylinderstwo, 19 1/2 x 26 in
Boiler
Grate area24.8 sq ft
Firebox area132 sq ft128 sq ft
Tube heating area1,062 sq ft777 sq ft
Evaporative heating area1,194 sq ft905 sq ft
Superheater area138 sq ft
Total heating area1,194 sq ft1,043 sq ft
Calculated Values
steam locomotive
express
John George Robinson
last changed: 04/2022
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