Midland Railway 990 Class

The Midland Railway 990 class was a class of 4-4-0 steam locomotive. Ten were built by the Midland Railway in 1907–1909, with simple expansion, to compare with the 1000 class compounds, with which they shared many features. 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.

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+1⁄2 in (1,435 mm) standard gauge
Leading dia.3 ft 3+1⁄2 in (1.003 m)
Driver dia.6 ft 6+1⁄2 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+1⁄2 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)
Withdrawn1925–1928
DispositionAll scrapped

Accidents and incidents
Main article: 1913 Ais Gill rail accident

Withdrawal

They passed to the London, Midland and Scottish Railway (LMS) in 1923 and were withdrawn between 1925 and 1928. in 1926, the eight surviving locomotives were renumbered 801 to 809 to free-up their old numbers for more Compounds. None has survived to preservation, though the first of the compounds has.

Table of withdrawals[2]
YearQuantity in
service at
start of year		Quantity
withdrawn		Locomotive numbers
1925101990
192691994
192782807
192864802, 803, 805, 806
192922808, 809

See also

References
    • 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.
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