Caledonian Railway 179 Class

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withdrawn 1922

This article is about the 4-4-0 "Oban Bogie" locomotives built in 1882. For the 4-6-0 goods locomotives built in 1913–1914, see Caledonian Railway 179 and 184 Classes.
Caledonian Railway 179 Class
Type and origin
Power typeSteam
DesignerGeorge Brittain
BuilderDübs & Co.
Serial number1672–1681
Build date1882
Total produced10
Specifications
Configuration:
​
 • Whyte4-4-0
 • UIC2′B n2
Gauge4 ft 8+1⁄2 in (1,435 mm)
Driver dia.5 ft 2 in (1,575 mm)
Minimum curve3 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)
CylindersTwo, outside
Cylinder size18 in × 24 in (457 mm × 610 mm)
Valve gearStephenson
Performance figures
Tractive effort
  • Originally: 13,858 lbf (61.64 kN)
  • Rebuilt: 15,991 lbf (71.13 kN)
Career
Operators
ClassCR: 179
Power classLMS: 1P
Withdrawn1922–1930

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Two locomotives (1184 and 1185) were withdrawn in 1922.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in 1923; who allocated them fleet numbers 14100–14107, but only three (14100/03/05) were renumbered.[2] All had been withdrawn by 1930.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]
YearQuantity in
service at
start of year		Quantity
withdrawn		Locomotive numbersNotes
19221021184, 1185
1923811181
1924711187
1925621180, 1188
1927411183
19303314100, 14103, 14105 (ex 1179, 1182, 1186)

References
  1. Casserley & Johnston 1966, p. 132.
  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.
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