The reference for locomotives and railcars
Great Northern (UK) No. 472 and 473
Great Britain | 1866 | 2 produced
Locomotive Magazine, February 1899

The Great Northern needed new locomotives to accommodate the growing freight traffic on the Metropolitan Line between King's Cross and the goods yards between Farringdon Street and Ludgate Hill. The particular challenges were gradients of up to 1 in 35, tight curves and several tunnels. Two locomotives were therefore ordered from Avonside in 1866, based on two others that had been built for the Vale of Neath Railway.

With four coupled axles they were exceptionally strong by British standards at the time. In order to be able to drive through the tight curves, the first and last axles could each be moved laterally by 5/8 inch and were reset by springs. Because of the tunnels they had a condenser. However, as they turned out to be too large for the Metropolitan Line, it is unclear how long they were actually used there in the time until they were scrapped in 1880.

Axle config0-8-0T (Eight-coupled) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase15 ft 10 in
Fixed wheelbase5 ft 5 in
Service weight125,440 lbs
Adhesive weight125,440 lbs
Axle load31,360 lbs
Fuel capacitycoal
Power sourcesteam
Estimated power425 hp (317 kW)
Optimal speed11 mph
Starting effort24,935 lbf
Power Plant
Driver diameter42 in
Boiler pressure150 psi
Expansion typesimple
Cylinderstwo, 18 1/2 x 24 in
Grate area17 sq ft
Firebox area100 sq ft
Tube heating area1,450.1 sq ft
Evaporative heating area1,550.1 sq ft
Total heating area1,550.1 sq ft
Calculated Values
steam locomotive
tank locomotive
Archibald Sturrock
last changed: 12/2023

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