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Caledonian Railway 60 Class (details for original CR batch)
Pickersgill/Hughes 4P 4-6-0 No. 14640 at Motherwell Locomotive Depot, 15 August 1948.
Type and origin Power type Steam Designer William Pickersgill Builder St. Rollox Works Order number Y115, Y116 Build date November 1916 – April 1917 Total produced 6
Specifications Configuration: ​  • Whyte 4-6-0  • UIC 2′C h2 Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Leading dia. 3 ft 6 in (1.067 m) Driver dia. 6 ft 1 in (1.854 m) Loco weight 75 long tons (76 t; 84 short tons) Tender weight 46.5 long tons (47.2 t; 52.1 short tons) Fuel type Coal Boiler pressure 175 lbf/in (1.21 MPa) Heating surface 1,676 sq ft (155.7 m) Superheater: ​  • Type Robinson  • Heating area 258.3 sq ft (24.00 m) Cylinders Two, outside Cylinder size 20 in × 26 in (508 mm × 660 mm) Valve gear Stephenson Valve type Piston valves
Performance figures Tractive effort 21,795 lbf (96.95 kN)
Career Operators Caledonian Railway → London, Midland and Scottish Railway → British Railways Class CR: 60 Power class LMS: 4P Numbers CR: 60–65 LMS: 14630–14655 Withdrawn 1944 (1), 1946–1953 Disposition All scrapped

The Caledonian Railway 60 Class were 4-6-0 passenger engines designed by William Pickersgill and introduced in 1916. Six locomotives were constructed by the Caledonian Railway at its St. Rollox works between 1916 and 1917, all of which transitioned to LMS (London, Midland and Scottish Railway) ownership in 1923. An additional twenty locomotives, featuring slight design modifications, were produced under the direction of George Hughes for the LMS between 1925 and 1926.

While the 60 Class locomotives were robust and free-steaming, they were also unsophisticated and exhibited lethargic performance given their size. Although initially classified as passenger locomotives by the LMS, they were frequently deployed on goods trains later in their service life. This shift in usage earned them the nickname Greybacks, likely referencing their long, grimy boilers. Alternatively, the nickname may have been an insult coined by former Glasgow and South Western Railway enginemen, as "greyback" was an old term for a louse.

Withdrawals from service began in 1944, but twenty-three locomotives remained operational when British Railways was formed in 1948. The final locomotives were retired in 1953, and none of the class were preserved, with all locomotives ultimately scrapped.

Numbering and locomotive histories

sources Longworth (2005) and RailUK

Technical details

Pickersgill Caledonian Railway design

See box, top right.

Hughes LMS development of Pickersgill design

The locomotives built by the LMS had slightly larger cylinders and weighed slightly less than the original CR locomotives. Details were as for the CR locomotives except:

• Introduced: 1925
• Boiler Pressure: 180 psi (1,200 kPa)
• Two cylinders: 20.5 in × 26 in (521 mm × 660 mm)
• Loco Weight: 74.75 long tons (75.95 t)
• Tender Weight: 41.5 long tons (42.2 t)
• Starting tractive effort: 22,900 lbf (102 kN)

References

1. Atkins, C. P. (1976), The Scottish 4-6-0 Classes, Ian Allan, p.53
2. Longworth, Hugh (2005), British Railway Steam Locomotives 1948-1968, page 166
3. "Rail UK Steam Loco Class Information". Railuk.info. Retrieved 26 May 2013.
4. "Rail UK Steam Loco Class Information". Railuk.info. Retrieved 26 May 2013.
5. "Rail UK Steam Loco Class Information". Railuk.info. Retrieved 21 June 2012.
6. Atkins, C. P. (1976), The Scottish 4-6-0 Classes, Ian Allan, p.109

• 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.

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 92 139 140 179 184 439 492 498 611 652 711 721 766 782 812 879 900 903
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

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