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London & North Eastern classes V1 and V3
Great Britain | 1930 | 92 produced
V1 No. 7677 in April 1948
V1 No. 7677 in April 1948
flickr/stratfordman72

Gresley developed the V1 as a powerful tank locomotive for suburban lines. Its drive consisted of three cylinders cast in one piece. Between 1930 and 1939, 82 V1s were built, which were initially used in the Glasgow and Edinburgh area. Ten V3s were then built, which had 20 psi higher boiler pressure. From 1948, a total of 71 V1s were converted to V3s by the LNER and British Railways. The decommissioning took place between 1960 and 1964.

VariantV1V3
General
Built1930-19391939-1940
ManufacturerDoncaster
Axle config2-6-2T (Prairie) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase32 ft 3 in
Service weight127,800 lbs130,140 lbs
Axle load43,120 lbs44,800 lbs
Water capacity2,402 us gal
Fuel capacity8,960 lbs (coal)10,080 lbs (coal)
Power
Power sourcesteam
Estimated power1,050 hp (783 kW)
Optimal speed30 mph27 mph
Starting effort22,464 lbf24,960 lbf
Power Plant
Driver diameter68 in
Boiler pressure180 psi200 psi
Expansion typesimple
Cylindersthree, 16 x 26 in
Boiler
Grate area22 sq ft
Firebox area127 sq ft
Tube heating area1,197 sq ft
Evaporative heating area1,324 sq ft
Superheater area284 sq ft
Total heating area1,608 sq ft
Calculated Values
steam locomotive
passenger
tank locomotive
Herbert Nigel Gresley
last changed: 04/2023
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