Midland Railway 990 Class

Midland Railway 990 class

The official photograph of 990 in photographic grey livery
Type and origin
Power type Steam
Designer Richard Deeley
Builder Derby Works
Build date 1907–1909
Total produced 10
Specifications
Configuration 4-4-0
UIC class 2′B n2, later 2′B h2
Gauge 4 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 weight 58 long tons 5 cwt (130,500 lb or 59.2 t)
Fuel type Coal
Boiler MR type G9A, later G9AS
Boiler pressure 200 lbf/in2 (1.38 MPa)
Cylinders Two, inside
Cylinder size 20 1⁄2 in × 26 in (521 mm × 660 mm)
Valve gear Deeley
Performance figures
Tractive effort 23,662 lbf (105.3 kN)
Career
Operators
Class MR: 990
Power class 4P
Numbers 990–999 (801–809 from 1926)
Withdrawn 1925–1928
Disposition All scrapped

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.

Accidents and incidents

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They passed to the London, Midland and Scottish Railway (LMS) in 1923 and were withdrawn between 1925 and 1928.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]
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withdrawn 		Locomotive numbers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

References

  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.
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