The reference for locomotives and railcars


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London & South Western class 700 “Black Motor”
Great Britain | 1897 | 30 produced
British Railways No. 30355 in May 1959 at Feltham depot
British Railways No. 30355 in May 1959 at Feltham depot
Ben Brooksbank / SR (ex-LSW) 0-6-0 at Feltham Locomotive Depot

Drummond had 30 freight locomotives built in 1897, which he had designed while still with the Caledonian. Construction eventually took place at Dübs in Scotland and they were nicknamed “Black Motors”. From 1919 all locomotives were fitted with a superheater, with the smoke box being lengthened. This process was continued under the Southern Railway and lasted until 1929. The superheater was partly of the Eastleigh works design and partly of the Maunsell design. Most machines were retired in 1961 and 1962.

Variantas builtsuperheated
ManufacturerDübs & Co.Eastleigh
Axle config0-6-0 (Six-coupled) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length27 ft 7 5/8 in29 ft 1 5/8 ft
Length loco52 ft 7 1/4 in54 ft 1 1/4 in
Wheelbase16 ft 6 in
Fixed wheelbase16 ft 6 in
Total wheelbase39 ft 1 in
Empty weight86,464 lbs95,312 lbs
Service weight95,760 lbs104,608 lbs
Adhesive weight95,760 lbs104,608 lbs
Total weight177,968 lbs186,816 lbs
Axle load36,512 lbs38,080 lbs
Water capacity4,203 us gal
Fuel capacitycoal
Power sourcesteam
Estimated power700 hp (522 kW)900 hp (671 kW)
Optimal speed21 mph24 mph
Starting effort21,699 lbf23,542 lbf
Power Plant
Driver diameter61 in
Boiler pressure175 psi180 psi
Expansion typesimple
Cylinderstwo, 18 1/2 x 26 intwo, 19 x 26 in
Grate area20.4 sq ft
Firebox area124 sq ft117 sq ft
Tube heating area1,067 sq ft859.5 sq ft
Evaporative heating area1,191 sq ft976.5 sq ft
Superheater area167 sq ft
Total heating area1,191 sq ft1,143.5 sq ft
Calculated Values
steam locomotive
Dugald Drummond
last changed: 03/2023

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