LMS Princess Coronation Class 6233 Duchess of Sutherland
6233 Duchess of Sutherland at Monk Fryston
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| Type and origin | |
|---|---|
| Power type | Steam |
| Designer | William Stanier |
| Builder | LMS Crewe Works |
| Build date | 1938 |
| Specifications | |
|---|---|
| Configuration: |
|
| • Whyte | 4-6-2 |
| • UIC | 2'C1'h |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) standard gauge |
| Leading dia. | 36 in (910 mm) |
| Driver dia. | 81 in (2,060 mm) |
| Trailing dia. | 45 in (1,140 mm) |
| Length | 73 ft 10 1⁄4 in (22.51 m) (conventional), 73 ft 9 3⁄4 in (22.50 m) (streamlined) |
| Loco weight | 105.25 long tons (106.94 t; 117.88 short tons) (conventional), 108.1 long tons (109.8 t; 121.1 short tons) (streamlined) |
| Tender weight | 56.35 long tons (57.25 t; 63.11 short tons) |
| Fuel type | Coal |
| Fuel capacity | 10 long tons (10.2 t; 11.2 short tons) |
| Water cap | 4,000 imp gal (18,000 L; 4,800 US gal) |
| Firebox: • Firegrate area |
50 sq ft (4.6 m2) |
| Boiler | LMS type 1X |
| Boiler pressure | 250 psi (1.7 MPa) superheated |
| Heating surface: • Tubes |
2,577 sq ft (239.4 m2) |
| • Firebox | 230 sq ft (21 m2) |
| Superheater: |
|
| • Heating area | 822–856 sq ft (76.4–79.5 m2) |
| Cylinders | 4 |
| Cylinder size | 16 1⁄2 in × 28 in (419 mm × 711 mm) |
| Valve gear | Walschaerts for outside cylinders with rocking shafts for inside cylinders, |
| Valve type | piston valves |
| Performance figures | |
|---|---|
| Tractive effort | 40,000 lbf (180 kN) |
| Career | |
|---|---|
| Power class | 7P, later 8P |
| Retired | 1964 |
| Disposition | Operational (Mainline Certified) |
No.46233 'Duchess of Sutherland' is a London, Midland and Scottish Railway (LMS) Princess Coronation Class 4-6-2 "Pacific" type steam locomotive built in 1938 by Crewe Works for the London Midland and Scottish Railway. Built as a high speed express passenger locomotive, 46233 was built to haul fast express passenger services such as ‘The Royal Scot’ and ‘The Mid-Day Scot' between London Euston and Glasgow Central as well as other expresses to Liverpool.
Withdrawn by British Railways in 1964, the locomotive was originally sold to Butlins holiday camp in Scotland. In 1996, the locomotive was acquired by The Princess Royal Class Locomotive Trust with the intention of restoration to mainline condition . In 2001, 46233 was restored to operating condition and since then has been a regular performer on the national network.
6233 was outshopped in July 1938 from Crewe Works and was part of the third batch of her class. These were unstreamlined, painted in LMS standard crimson lake livery and had a single chimney and no smoke deflectors and an estimated cost of £13,800 each.
6233 was initially allocated to Camden, London. It acquired a double chimney in March 1941 and because of drifting smoke acquired smoke deflectors in September 1945 before being painted in postwar LMS black livery in September 1946. With the creation of British Railways on 1 January 1948 it was allocated to Crewe North depot. BR renumbered the locomotive to 46233 in October 1948 and repainted it in BR Brunswick green livery in 1952 or early 1953. In June 1958 it was allocated to Carlisle Upperby before eventually being withdrawn from Edge Hill depot in February 1964. During its 25 years service Duchess of Sutherland ran 1,650,000 miles - the second highest mileage by any member of the class.
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