Caledonian Railway 179 Class

Type and origin
Power type	Steam
Designer	George Brittain
Builder	Dübs & Co.
Serial number	1672–1681
Build date	1882
Total produced	10

Specifications
Configuration:
• Whyte	4-4-0
• UIC	2′B n2
Gauge	4 ft 8 ¹⁄₂ in (1,435 mm)
Driver dia.	5 ft 2 in (1,575 mm)
Minimum curve	3 ft 2 in (965 mm)
Loco weight	Originally: 41 long tons 11 ³⁄₄ cwt (42.25 t) Rebuilt: 40 long tons 17 ¹⁄₂ cwt (41.53 t)
Boiler pressure	Originally: 130 lbf/in² (0.90 MPa) Rebuilt: 150 lbf/in² (1.03 MPa)
Heating surface	Originally: 1,146.42 sq ft (106.506 m²) Rebuilt: 1,085.9 sq ft (100.88 m²)
Cylinders	Two, outside
Cylinder size	18 in × 24 in (457 mm × 610 mm)
Valve gear	Stephenson

Performance figures
Tractive effort	Originally: 13,858 lbf (61.64 kN) Rebuilt: 15,991 lbf (71.13 kN)

Career
Operators	Caledonian Railway → London, Midland and Scottish Railway
Class	CR: 179
Power class	LMS: 1P
Withdrawn	1922–1930

The Caledonian Railway 179 Class (nicknamed Oban bogie) was a class of 4-4-0 steam locomotives designed by George Brittain for the Caledonian Railway (CR) and introduced in 1882.^[1]

Table of orders and numbers
CR nos.	Quantity	LMS nos.	Notes
179–188	10	14100–14107	CR 1184 and 1185 withdrawn 1922

All ten were built by Dübs and Company in 1882; they came with 4-wheel tenders to reduce the overall length in order to fit on the turntables. They were rebuilt and reboilered between 1898 and 1901. They were placed on the duplicate list (by adding 1000 to their original fleet number) between 1913 and 1914.

Two locomotives (1184 and 1185) were withdrawn in 1922. Eight survived into the ownership of the London, Midland and Scottish Railway (LMS) in 1923; who allocated them fleet numbers 14100–14107, but only three (14100/03/05) were renumbered.^[2] All had been withdrawn by 1930.

Table of withdrawals^[2]
Year	Quantity in service at start of year	Quantity withdrawn	Locomotive numbers
1922	10	2	1184, 1185
1923	8	1	1181
1924	7	1	1187
1925	6	2	1180, 1188
1927	4	1	1183
1930	3	3	14100, 14103, 14105 (ex 1179, 1182, 1186)

References

↑ Casserley & Johnson 1966, p. 132.
1 2 Baxter 1984, pp. 69–70.

Baxter, Bertram (1984). Baxter, David, ed. British Locomotive Catalogue 1825–1923, Volume 4: Scottish and remaining English Companies in the LMS Group. Ashbourne, Derbyshire: Moorland Publishing Company.
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.

Caledonian Railway locomotives
Robert Sinclair (1847–1856)	59 (2-2-2) 96 101 111
Benjamin Connor (1856–1876)	59 (2-4-0) 552 600
George Brittain (1876–1882)	1 130 140 152 179 485 486 670
Dugald Drummond (1882–1890)	66 80 123 124 171 262 264 272 294 323
Hugh Smellie (1890)	Appointed 1 September 1890. Died 19 April 1891
John Lambie (1891–1895)	1 13 19 211 538A
John F. McIntosh (1895–1914)	29 43 49 55 92 139 140 179 184 439 498 611 652 711 721 766 782 812 879 900 903
William Pickersgill (1914–1923)	60 72 113 159 191 300 431 956
Miscellaneous	Highland Railway River Class

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