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Midland Railway 990 Class

From Wikipedia, the free encyclopedia

Midland Railway 990 class
The official photograph of 990 in photographic grey livery
Type and origin
Power typeSteam
DesignerRichard Deeley
BuilderDerby Works
Build date1907–1909
Total produced10
Specifications
Configuration:
 • Whyte4-4-0
 • UIC2′B n2, later 2′B h2
Gauge4 ft 8+12 in (1,435 mm) standard gauge
Leading dia.3 ft 3+12 in (1.003 m)
Driver dia.6 ft 6+12 in (1.994 m)
Loco weight58 long tons 5 cwt (130,500 lb or 59.2 t)
Fuel typeCoal
BoilerMR type G9A, later G9AS
Boiler pressure200 lbf/in2 (1.38 MPa)
CylindersTwo, inside
Cylinder size20+12 in × 26 in (521 mm × 660 mm)
Valve gearDeeley
Performance figures
Tractive effort23,662 lbf (105.3 kN)
Career
Operators
ClassMR: 990
Power class4P
Numbers990–999 (801–809 from 1926)
Withdrawn1925–1929
DispositionAll scrapped

The Midland Railway 990 class was a class of 4-4-0 steam locomotive with simple expansion. Ten were built by the Midland Railway in 1907–1909. They shared many features with the 1000 class compounds. Initially built as saturated, from 1910 to 1914 they were equipped with superheated boilers. These locomotives were well-known for their work North of Leeds, over the demanding Settle and Carlisle route.

Accidents and incidents

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Withdrawal

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They passed to the London, Midland and Scottish Railway (LMS) in 1923 and were withdrawn between 1925 and 1929. In 1926, the eight surviving locomotives were renumbered 801 to 809 to free up their old numbers for more Compounds. None have survived into preservation, though the first of the compounds has.

Table of withdrawals[2]
Year Quantity in
service at
start of year
Quantity
withdrawn
Locomotive numbers
1925 10 1 990
1926 9 1 994
1927 8 2 807
1928 6 4 802, 803, 805, 806
1929 2 2 808, 809

See also

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References

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  1. ^ *Gerard, Malcolm; Hamilton, J. A. B. (1981) [1967]. Trains to Nowhere. London: Georg Allen & Unwin. pp. 22–25. ISBN 0-04-385084-7.
  2. ^ Baxter 1982, p. 176.
  • Baxter, Bertram (1982). Baxter, David (ed.). British Locomotive Catalogue 1825–1923. Vol. 3A: Midland Railway and its constituent companies. Ashbourne, Derbyshire: Moorland Publishing Company. ISBN 9780903485524.
  • Casserley, H. C. & Johnston, Stuart W. (1974) [1966]. Locomotives at the Grouping 3: London, Midland and Scottish Railway. Shepperton, Surrey: Ian Allan. ISBN 0-7110-0554-0.