LMS Princess Royal Class
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The London, Midland and Scottish Railway (LMS) Princess Royal Class is a class of an express passenger steam locomotive designed by William Stanier. They were pacifics (i.e. had a 4-6-2 wheel arrangement). Thirteen examples were built at Crewe Works, between 1933 and 1935 and two are preserved.
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[edit] Overview
When originally built, they were used to haul the famous Royal Scot train. A single example of a version using steam turbines instead of cylinders was built as 6202 (see The Turbomotive). They were withdrawn in the early 1960s in line with British Railway's modernisation plan. Two examples, 6201 Princess Elizabeth and 46203 Princess Margaret Rose are preserved. Each locomotive was named after a princess, the official name for the class was chosen as Mary, Princess Royal was the Commander-in-Chief of the Royal Scots. However, they were known to railwaymen as "Lizzies", after the second example of the class named for Princess Elizabeth who later became Queen Elizabeth II of the United Kingdom. Later examples of express passenger locomotive built by the LMS were of the related but larger, Princess Coronation Class.
[edit] Technical
Power Classification: 7P reclassified 8P in 1951
Introduced: 1933-1935
Designer: Sir William Stanier
Weights:
- Loco - 104t 10cwt, 110t 11cwt (Turbo.)
- Tender - 54t 13cwt
Driving Wheel: 6' 6"
Boiler pressure: 250psi superheated
Cylinders (4): 16¼ " x 28"
Tractive Effort: 40,285lbf
Valve Gear: Walschaert (piston valves)
- 6205 Outside Walschaert with rocking shafts operating inside valves.(piston valves)
[edit] Details
| Numbers | Name(s) | Date | Notes | ||
|---|---|---|---|---|---|
| LMS | BR | Built | Withdrawn | ||
| 6200 | 46200 | The Princess Royal | Jul. 1933 | Nov. 1962 | . |
| 6201 | 46201 | Princess Elizabeth | Nov. 1933 | Oct. 1962 | Preserved. |
| 6203 | 46203 | Princess Margaret Rose | Jul. 1935 | Oct. 1962 | Preserved. Owned by the Princess Royal Class Locomotive Trust. |
| 6204 | 46204 | Princess Louise | Jul. 1935 | Oct. 1961 | . |
| 6205 | 46205 | Princess Victoria | Jul. 1935 | Nov. 1961 | Fitted with modified valve gear, 1947.Converted back to normal 1955 |
| 6206 | 46206 | Princess Marie Louise | Aug. 1935 | Oct. 1962 | . |
| 6207 | 46207 | Princess Arthur of Connaught | Aug. 1935 | Nov. 1961 | . |
| 6208 | 46208 | Princess Helana Victoria | Aug. 1935 | Oct. 1962 | . |
| 6209 | 46209 | Princess Beatrice | Aug. 1935 | Sep. 1962 | . |
| 6210 | 46210 | Lady Patricia | Sep. 1935 | Oct. 1961 | . |
| 6211 | 46211 | Queen Maud | Sep. 1935 | Oct. 1961 | . |
| 6212 | 46212 | Duchess of Kent | Oct. 1935 | Oct. 1961 | . |
[edit] Media
- 6201 at Langho on Whalley Bank - sound recording.
[edit] References
- Ian Sixsmith The Book of the Princess Royal Pacifics ISBN 1-903266-02-5
- Hugh Longworth British Railway Steam Locomotives 1948-1968 ISBN 0-86093-593-0
| Hughes: | 5MT Crab |
| Fowler: | 2P 4-4-0 - 2F Dock Tank - 3MT 2-6-2T - 3F Jinty - 4P Compound - 4MT 2-6-4T - 4F 0-6-0 - 6P Patriot - 7P Royal Scot - 7F 0-8-0 - Garratt - 6399 Fury |
| Stanier: | 2P 0-4-4T - 3MT 2-6-2T - 4MT 2-6-4T (2 cylinders) - 4MT 2-6-4T (3 cylinders) - 5MT 2-6-0 - 5MT Black Five - 6P Jubilee - 8P Princess Royal - 8P Coronation - 8F 2-8-0 - Turbomotive |
| Kitson: | 0F 0-4-0ST |
| Fairburn: | 4MT 2-6-4T |
| Ivatt: | 2MT 2-6-0 - 2MT 2-6-2T - 4MT 2-6-0 |
| Locomotives of: | BR (steam) • GWR • LNER • Southern |
