LMS diesel shunter 1831

LMS 1831

Type and origin Power type Diesel Hydraulic Builder LMS, Derby Works Build date 1931 Total produced 1

Specifications Configuration 0-6-0DH Gauge 4 ft 8 ^1⁄2 in (1,435 mm) standard gauge Wheel diameter 4 ft 7 in (1.397 m) Wheelbase 15 ft 8 in (4.78 m) Length 30 ft 3 ^3⁄4 in (9.24 m) Width 8 ft 7 ^1⁄2 in (2.63 m) Height 12 ft 9 in (3.89 m) Loco weight 45 long tons 2 cwt (101,000 lb or 45.8 t) Fuel capacity 140 imperial gallons (640 l; 170 US gal) Prime mover Davey Paxman Engine type 6-cyl Transmission Haslam & Newton Loco brake Air brake (independent) Train brakes Vacuum brake

Performance figures Maximum speed 25 mph (40 km/h) Power output 400 hp (298 kW) at 750 rpm; later300 hp (224 kW) Tractive effort 22,400 lbf (99.6 kN); later 20,000 lbf (89.0 kN)

Career Operators London, Midland and Scottish Railway Numbers 1831 Delivered Testing: December 1932; In stock: May 1934 Withdrawn September 1939 Disposition Rebuilt 1940 in to mobile power unit; scrapped 1950s

No. 1831 was the first experimental diesel hydraulic shunter of the London, Midland and Scottish Railway (LMS) which pioneered diesel shunting in the UK. It was introduced in 1932, built at Midland Railway's Derby Works. It was nominally a rebuild of a Midland Railway 1377 Class 0-6-0T steam locomotive of the same number, built in September 1892 by the Vulcan Foundry.^[1] The frames and running gear of the original locomotive were retained.^[2]

The experiment was not a success and the locomotive was put into storage in 1936. 1831 was withdrawn from service in September 1939 and converted to a mobile power unit, emerging in its new guise as MPU3 in November 1940. It was scrapped in August 1951.^[3]

References

1. Details from Marsden, Colin (1981). The diesel shunter: a pictorial record. Oxford: Oxford Publishing Company. pp. unpaged. ISBN 0860931080.
2. Strickland, D.C. (1982). Locomotive directory: every single one there has ever been. Camberley: Diesel and Electric Group. p. 23. ISBN 0-906375-10-X.
3. Strickland (1982), p.23.