LMS diesel shunter 7050

LMS diesel shunter 7050 is an experimental 0-4-0 diesel-mechanical shunting locomotive, introduced by the London Midland and Scottish Railway (LMS) in 1934 and which remained in service with that railway for six years. It was later acquired for military use and is now preserved at the National Railway Museum.

LMS 7050
Preserved LMS 0-4-0 diesel mechanical shunter No.7050 at the National Railway Museum
Type and origin
Power typeDiesel-mechanical
BuilderDrewry Car Co. at English Electric, Preston
Serial numberDrewry 2047
English Electric 847
Build date1934
Total produced1
Specifications
Configuration:
​
 • Whyte0-4-0DM
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter3 ft 0 in (0.914 m)
Wheelbase7 ft 0 in (2.13 m)
Length23 ft 10+1⁄2 in (7.28 m)
Width8 ft 5 in (2.57 m)
Height12 ft 8 in (3.86 m)
Loco weight25 long tons 8 cwt (56,900 lb or 25.8 t)
25 long tons 8 cwt (25.8 t; 28.4 short tons)
Fuel capacity100 imperial gallons (454.61 L; 120.09 US gal)
Prime moverW. H. Allen 8RS18 later Gardner 6L3
Engine type8-cyl,later 6-cyl, Diesel
TransmissionENV and Bostock & Bramley
Loco brakeAir brake
Train brakesNone
Performance figures
Maximum speed12 mph (19 km/h)
Power output160 hp (120 kW) at 1,200 rpm, later 150 hp (110 kW)
Tractive effort11,200 lbf (49.8 kN)
Career
Operators
Number in class1
DispositionPreserved in 1979

History

No. 7050 was an experimental locomotive built by the Drewry Car Co. at the English Electric Preston works in 1934. It carried an original number of 7400 only within the works and was delivered as LMS number 7050. For six years it was used for dock shunting at Salford before being loaned to the Air Ministry in 1940.[1] It was withdrawn from LMS stock in March 1943 and sold to the War Department (WD) which numbered it 224. Subsequent renumberings by the WD, and later the Army, saw it carry numbers 70224 (in 1944), 846 (1952) and 240 (1968).

At some point it was rebuilt with a Gardner engine and was used at the Royal Navy base at Botley, Hampshire.[2]

Preservation

No 7050 was preserved in 1979, and displayed at the Museum of Army Transport in Beverley. Upon the closure of that Museum in 2003 it was transferred to the National Railway Museum in York.

Footnotes
  1. Marsden, Colin (1981). The diesel shunter: a pictorial record. Oxford: Oxford Publishing Company. pp. Notes. ISBN 0860931080.
  2. Marsden (1981).

References
  • Rowledge, J.W.P. (1975). Engines of the LMS built 1923–51. Oxford: Oxford Publishing Company. pp. 36, 46, 72, 94. ISBN 0-902888-59-5.
  • Strickland, David C. (September 1983). Locomotive Directory: Every Single One There Has Ever Been. Camberley: Diesel and Electric Group. p. 23. ISBN 978-0-906375-10-5. OCLC 16601890. OL 27959920M. Wikidata Q105978499.
  • Tourret, R. (1995). Allied Military Locomotives of the Second World War. Abingdon, Oxon: Tourret Publishing. pp. 36–42. ISBN 0-905878-06-X.
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