Caledonian Railway 670 Class

Specifications
Specifications
Configuration:;
• Whyte	0-4-2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	5 ft 0 in (1.524 m)
Loco weight	34.6 long tons (35.2 t; 38.8 short tons)†; 36.95 long tons (37.54 t; 41.38 short tons)††
Boiler pressure	140 psi (970 kPa)†; 150 psi (1,000 kPa)††
Cylinders	Two, outside
Cylinder size	17 in × 24 in (432 mm × 610 mm)
Valve gear	Stephenson

Caledonian Railway 670 Class
Caledonian Railway 670 Class
Power type
Type and origin
Power type	Steam
Designer	George Brittain
Build date	1878-1881
Total produced	30
Configuration:;
Specifications
Configuration:;
• Whyte	0-4-2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	5 ft 0 in (1.524 m)
Loco weight	34.6 long tons (35.2 t; 38.8 short tons)†; 36.95 long tons (37.54 t; 41.38 short tons)††
Boiler pressure	140 psi (970 kPa)†; 150 psi (1,000 kPa)††
Cylinders	Two, outside
Cylinder size	17 in × 24 in (432 mm × 610 mm)
Valve gear	Stephenson
Tractive effort
Performance figures
Tractive effort	13,756 lbf (61.19 kN)†; 14,739 lbf (65.56 kN)††
Operators
Career
Operators	CR • LMS
Class	CR: 670
Power class	LMS: Unclassified
Withdrawn	1922-1932
Disposition	All scrapped

Power typeSteam

Build date1878-1881

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]

CR nos.	Quantity	LMS nos.	Notes
Various	7	17000-17006	†
Various	14	17007-17020	††

v t e 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 92 139 140 179 184 439 492 498 600 611 652 711 721 766 782 812 879 900 903
William Pickersgill (1914–1923)	60 72 113 159 191 300 431 944 956
Miscellaneous	Highland Railway River Class
Locomotives of the London, Midland and Scottish Railway Steam locomotives of British Railways

Numbering