GWR 4000 Class
| GWR 4000 Star class | |
|---|---|
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| 4003 Lode Star. | |
| Power type | Steam |
| Designer | George Jackson Churchward |
| Builder | GWR Swindon Works |
| Build date | 1907–1923 |
| Total produced | 73 |
| Configuration | 4-6-0 |
| UIC classification | 2'Ch |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Leading wheel diameter |
3 ft 2 in (0.965 m) |
| Driver diameter | 6 ft 8 1⁄2 in (2.045 m) |
| Fuel type | Coal |
| Boiler | GWR Number 1 |
| Boiler pressure | 225 psi (1.55 MPa) |
| Firegrate area | 27.1 sq ft (2.52 m2) |
| Heating surface: Tubes |
1,686.6 sq ft (156.69 m2) |
| Heating surface: Firebox |
154.8 sq ft (14.38 m2) |
| Superheater area | 262.6 sq ft (24.40 m2) |
| Cylinders | Four |
| Cylinder size | 15 in × 26 in (381 mm × 660 mm) |
| Tractive effort | 27,800 lbf (123.7 kN) |
| Career | GWR » BR |
| Class | GWR: 4000 Star |
| Power class | GWR: D BR: 5P |
| Number | 4000–4072 |
| Axle load class | GWR: Red |
| Withdrawn | 1925–1957 |
| Disposition | One preserved, remainder scrapped |
A Star class locomotive was a particular type of steam locomotive of the Great Western Railway. The prototype was an experimental locomotive, North Star (originally given number 40), constructed with the 'Atlantic' 4-4-2 wheel arrangement for comparative trials with 4-cylinder compound locomotives of the de Glehn type that had been purchased from France. This established the benefits of the balanced 4-cylinder layout but the designer, George Churchward, decided that he would continue the class with simple steam expansion, and also with the 4-6-0 wheel arrangement he had introduced with the 2900 class. As in the de Glehn design, the outer cylinders drove the centre driving axle, the inside pair of cylinders were set well forward and drove the leading driving axle.
Construction of the production class began in 1907. In the production class (4001 to 4072) there were just two set of Walschaerts valve gear between the frames, the valves to the outside cylinders being driven by rocking levers.
An enlarged version of the design was introduced in 1923, as the Castle Class, of which about 170 were constructed, including some rebuilds from the 'Star' class.
One example of the 'Star" class, 4003 Lode Star, survives in preservation as a static, non-working, exhibit. On withdrawal from service, it was overhauled and repainted at Swindon Works, and as such is a rare example of a locomotive untouched since overhaul by preservationists. As a result of this, it is unlikely that it will ever be restored to operating condition.
List of locomotives
| No. | First name | Second name | Third name | Date built | Date withdrawn | Notes |
|---|---|---|---|---|---|---|
|
4000 |
North Star | — | — | Nov 1909 | Nov 1929 | Renumbered December 1912, rebuilt as Castle Class 4000 |
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Dog Star | — | — | Feb 1907 | Jan 1934 | |
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Evening Star | — | — | Mar 1907 | Jun 1933 | |
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Lode Star | — | — | Feb 1907 | Jul 1951 | Preserved at National Railway Museum, York |
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Morning Star | — | — | Feb 1907 | Apr 1948 | |
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Polar Star | — | — | Feb 1907 | Nov 1934 | |
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Red Star | — | — | Apr 1907 | Nov 1932 | |
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Rising Star | Swallowfield Park | — | Apr 1907 | Sep 1951 | |
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Royal Star | — | — | May 1907 | Jun 1935 | |
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Shooting Star | — | — | May 1907 | Apr 1925 | Rebuilt as Castle Class 4009 |
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Western Star | — | — | May 1907 | Nov 1934 | |
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Knight of the Garter | — | — | Mar 1908 | Nov 1932 | |
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Knight of the Thistle | — | — | Mar 1908 | Oct 1949 | |
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Knight of St. Patrick | — | — | Mar 1908 | May 1950 | |
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Knight of the Bath | — | — | Mar 1908 | Jun 1946 | |
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Knight of St. John | — | — | Mar 1908 | Feb 1951 | |
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Knight of the Golden Fleece | — | — | Apr 1908 | Oct 1925 | Rebuilt as Castle Class 4016 |
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Knight of the Black Eagle | Knight of the Léige | — | Apr 1908 | Nov 1949 | |
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Knight of the Grand Cross | — | — | Apr 1908 | Apr 1951 | |
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Knight Templar | — | — | May 1908 | Oct 1949 | |
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Knight Commander | — | — | May 1908 | Mar 1951 | |
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King Edward | The British Monarch | British Monarch | Jun 1909 | Oct 1952 | Renamed June 1927 and October 1927 |
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King William | The Belgian Monarch | Belgian Monarch | Jun 1909 | Feb 1952 | Renamed June 1927 and October 1927, name removed May 1940 |
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King George | The Danish Monarch | Danish Monarch | Jun 1909 | Jul 1952 | Renamed July 1927 and October 1927, name removed November 1940 |
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King James | The Dutch Monarch | Dutch Monarch | Jun 1909 | Feb 1935 | Renamed September 1927 and November 1927 |
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King Charles | Italian Monarch | — | Jul 1909 | Aug 1950 | Renamed October 1927, name removed June 1940 |
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King Richard | The Japanese Monarch | Japanese Monarch | Sep 1909 | Feb 1950 | Renamed July 1927 and November 1927, name removed January 1941 |
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King Henry | The Norwegian Monarch | Norwegian Monarch | Sep 1909 | Oct 1934 | Renamed July 1927 and November 1927 |
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King John | The Romanian Monarch | Romanian Monarch | Sep 1909 | Nov 1951 | Renamed July 1927 and November 1927, name removed November 1940 |
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King Stephen | The Spanish Monarch | Spanish Monarch | Oct 1909 | Nov 1934 | Renamed July 1927 and November 1927 |
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King Harold | The Swedish Monarch | Swedish Monarch | Oct 1909 | May 1950 | Renamed July 1927 and November 1927, name removed November 1940 |
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Queen Mary | — | — | Oct 1910 | Jun 1951 | |
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Queen Alexandra | — | — | Oct 1910 | Apr 1926 | Rebuilt as Castle Class 4032 |
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Queen Victoria | — | — | Nov 1910 | Jun 1951 | |
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Queen Adelaide | — | — | Nov 1910 | Sep 1952 | |
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Queen Charlotte | — | — | Nov 1910 | Oct 1951 | |
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Queen Elizabeth | — | — | Dec 1910 | Mar 1952 | |
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Queen Philippa | — | — | Dec 1910 | Jun 1926 | Rebuilt as Castle Class 4037 |
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Queen Berengaria | — | — | Jan 1911 | Apr 1952 | |
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Queen Matilda | — | — | Feb 1911 | Nov 1950 | |
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Queen Boadicea | — | — | Mar 1911 | Jun 1951 | |
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Prince of Wales | — | — | Jun 1913 | Apr 1951 | |
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Prince Albert | — | — | May 1913 | Nov 1951 | |
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Prince Henry | — | — | May 1913 | Jan 1952 | |
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Prince George | — | — | May 1913 | Feb 1953 | |
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Prince John | — | — | Jun 1913 | Nov 1950 | |
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Princess Mary | — | — | May 1914 | Nov 1951 | |
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Princess Louise | — | — | May 1914 | Jul 1951 | |
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Princess Victoria | — | — | May 1914 | Jan 1953 | |
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Princess Maud | — | — | May 1914 | Jul 1953 | |
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Princess Alice | — | — | Jun 1914 | Feb 1952 | |
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Princess Helena | — | — | Jun 1914 | Oct 1950 | |
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Princess Beatrice | — | — | Jun 1914 | Jun 1953 | |
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Princess Alexandra | — | — | Jun 1914 | Jul 1954 | |
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Princess Charlotte | — | — | Jun 1914 | Feb 1952 | |
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Princess Sophia | — | — | Jul 1914 | Feb 1951 | |
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Princess Margaret | — | — | Jul 1914 | Oct 1957 | |
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Princess Elizabeth | — | — | Jul 1914 | Feb 1952 | |
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Princess Augusta | — | — | Jul 1914 | Apr 1951 | |
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Princess Patricia | — | — | Jul 1914 | Sep 1952 | |
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Princess Eugenie | — | — | Jul 1914 | Oct 1952 | |
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Glastonbury Abbey | — | — | May 1922 | Mar 1957 | |
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Malmesbury Abbey | — | — | May 1922 | Nov 1956 | |
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Bath Abbey | — | — | Nov 1922 | Jun 1937 | Rebuilt as Castle Class 5083 |
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Reading Abbey | — | — | Dec 1922 | Apr 1937 | Rebuilt as Castle Class 5084 |
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Evesham Abbey | — | — | Dec 1922 | Jul 1939 | Rebuilt as Castle Class 5085 |
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Malvern Abbey | Sir Robert Horne | Viscount Horne | Dec 1922 | Dec 1937 | Rebuilt as Castle Class 5086 |
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Tintern Abbey | — | — | Jan 1923 | Nov 1940 | Rebuilt as Castle Class 5087 |
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Llanthony Abbey | — | — | Jan 1923 | Feb 1939 | Rebuilt as Castle Class 5088 |
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Margam Abbey | Westminster Abbey | — | Jan 1923 | Oct 1939 | Rebuilt as Castle Class 5089 |
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Neath Abbey | — | — | Feb 1923 | Apr 1939 | Rebuilt as Castle Class 5090 |
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Cleeve Abbey | — | — | Feb 1923 | Dec 1938 | Rebuilt as Castle Class 5091 |
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Tresco Abbey | — | — | Feb 1923 | Apr 1938 | Rebuilt as Castle Class 5092 |
External links
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