Caledonian Railway 670 Class
Type and origin
Power typeSteam
DesignerGeorge Brittain
Build date1878-1881
Total produced30
Specifications
Configuration:
​
 • Whyte0-4-2
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.5 ft 0 in (1.524 m)
Loco weight34.6 long tons (35.2 t; 38.8 short tons)†
36.95 long tons (37.54 t; 41.38 short tons)††
Boiler pressure140 psi (970 kPa)†
150 psi (1,000 kPa)††
CylindersTwo, outside
Cylinder size17 in × 24 in (432 mm × 610 mm)
Valve gearStephenson
Performance figures
Tractive effort13,756 lbf (61.19 kN)†
14,739 lbf (65.56 kN)††
Career
OperatorsCR • LMS
ClassCR: 670
Power classLMS: Unclassified
Withdrawn1923

The Caledonian Railway 670 Class was a class of 0-4-2 steam locomotives designed by George Brittain for the Caledonian Railway (CR) and introduced in 1878. [1]

Ownership changes

Nine locomotives were withdrawn in 1922, or earlier. Twenty-one survived into the ownership of the London, Midland and Scottish Railway (LMS) in 1923; these were withdrawn between 1923 and 1932.[2]

Numbering

CR nos. Quantity LMS nos. Notes
Various 7 17000-17006 †
Various 14 17007-17020 ††
Notes
  • † locos with 140 psi pressure
  • †† locos with 150 psi pressure

References

  1. ↑ Casserley, H.C. and Johnston, S.W., Locomotives at the Grouping, No.3, London Midland and Scottish, Ian Allan, 1966, page 170
  2. ↑ Baxter, Bertram (1984). Baxter, David (ed.). British Locomotive Catalogue 1825-1923, volume 4: Scottish and remaining English Companies in the LMS Group. Ashbourne: Moorland Publishing. pp. 68–69.
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