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London & North Western class A
Great Britain | 1893
111 produced

Between 1893 and 1900, Francis Webb built 111 class A 0-8-0 goods locomotives for the LNWR. Like earlier Webb compounds with two driving axles they had two small high-pressure cylinders on the outside and one larger low-pressure cylinder on the inside. But unlike these, all four axles of the class A were coupled.

Since Webb's successors Whale and Bowen Cooke wanted to clear the problems of the Webb compounds, they rebuilt the whole class into two-cylinder simple locomotives. So 15 became class C, 62 became class D and 34 became class C1. Most were again rebuilt to class G1 and some of these again to class G2a, with the last ones only being withdrawn in 1962.

General
Built1893-1900
ManufacturerCrewe
Axle config0-8-0 (Eight-coupled) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase17 ft 3 in
Rigid wheelbase17 ft 3 in
Service weight112,000 lbs
Adhesive weight112,000 lbs
Axle load32,256 lbs
Fuel capacitycoal
Boiler
Grate area20.5 sq ft
Firebox area115 sq ft
Tube heating area1,490 sq ft
Evaporative heating area1,605 sq ft
Total heating area1,605 sq ft
Power Plant
Driver diameter53 in
Boiler pressure175 psi
Expansion typecompound
Cylindersthree, HP: 15 x 24 in
and LP: 30 x 24 in
Power
Power sourcesteam
Estimated power700 hp (522 kW)
Optimal speed22 mph
Starting effort20,208 lbf
with start valve24,250 lbf
Calculated Values
steam locomotive
freight
Francis William Webb
Webb compound
last changed: 07/2024
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