gwr 4000 class

A Star class locomotive was a particular type of steam locomotive of the Great Western Railway. In total, 73 were built, but some were later rebuilt as Castle Class locomotives. One, 4003 Lode Star, survives in preservation as a static, non-working, exhibit. The prototype was an experimental locomotive, 4000 North Star (originally given number 40), constructed with the 4-4-2 wheel arrangement for comparative trials with 4-cylinder compound locomotives of the de Glehn type purchased from France. This established the benefits of the 4 cylinder layout, but with simple expansion, and a 4-6-0 wheel arrangement. 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. There were just two set of Walchaert's 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, this was the Castle Class locomotive, of which about 170 were constructed, including the rebuilds from the Star class mentioned above.

List of Locomotives

olspan=3 align=center\|Names	rowspan=2 align=center\|Notes
idth="110" align=center\|First	width="110" align=center\|Second	width="110" align=center\|Third
lign=center\|40 / 4000	North Star	\| \|Rebuilt as Castle Class 4000
lign=center\|4001	Dog Star
lign=center\|4002	Evening Star
lign=center\|4003	Lode Star	\| \|Preserved at National Railway Museum, York
lign=center\|4004	Morning Star
lign=center\|4005	Polar Star
lign=center\|4006	Red Star
lign=center\|4007	Rising Star	Swallowfield Park
lign=center\|4008	Royal Star
lign=center\|4009	Shooting Star	\| \|Rebuilt as Castle Class 4009
lign=center\|4010	Western Star
lign=center\|4011	Knight of the Garter
lign=center\|4012	Knight of the Thistle
lign=center\|4013	Knight of St. Patrick
lign=center\|4014	Knight of the Bath
lign=center\|4015	Knight of St. John
lign=center\|4016	Knight of the Golden Fleece	\| \|Rebuilt as Castle Class 4016
lign=center\|4017	Knight of the Black Eagle	Knight of the Lige
lign=center\|4018	Knight of the Grand Cross
lign=center\|4019	Knight Templar
lign=center\|4020	Knight Commander
lign=center\|4021	King Edward	British Monarch
lign=center\|4022	King William	Belgian Monarch	\|Denamed in 1940
lign=center\|4023	King George	Danish Monarch	\|Denamed in 1940
lign=center\|4024	King James	Dutch Monarch
lign=center\|4025	King Charles	Italian Monarch	\|Denamed in 1940
lign=center\|4026	King Richard	Japanese Monarch	\|Denamed in 1941
lign=center\|4027	King Henry	Norwegian Monarch
lign=center\|4028	King John	Roumanian Monarch	\|Denamed in 1940
lign=center\|4029	King Stephen	Spanish Monarch
lign=center\|4030	King Harold	Swedish Monarch	\|Denamed in 1940
lign=center\|4031	Queen Mary
lign=center\|4032	Queen Alexandra	\| \|Rebuilt as Castle Class 4032
lign=center\|4033	Queen Victoria
lign=center\|4034	Queen Adelaide
lign=center\|4035	Queen Charlotte
lign=center\|4036	Queen Elizabeth
lign=center\|4037	Queen Philippa	\| \|Rebuilt as Castle Class 4037
lign=center\|4038	Queen Berengaria
lign=center\|4039	Queen Matilda
lign=center\|4040	Queen Boadicea
lign=center\|4041	Prince of Wales
lign=center\|4042	Prince Albert
lign=center\|4043	Prince Henry
lign=center\|4044	Prince George
lign=center\|4045	Prince John
lign=center\|4046	Princess Mary
lign=center\|4047	Princess Louise
lign=center\|4048	Princess Victoria
lign=center\|4049	Princess Maud
lign=center\|4050	Princess Alice
lign=center\|4051	Princess Helena
lign=center\|4052	Princess Beatrice
lign=center\|4053	Princess Alexandra
lign=center\|4054	Princess Charlotte
lign=center\|4055	Princess Sophia
lign=center\|4056	Princess Margaret
lign=center\|4057	Princess Elizabeth
lign=center\|4058	Princess Augusta
lign=center\|4059	Princess Patricia
lign=center\|4060	Princess Eugenie
lign=center\|4061	Glastonbury Abbey
lign=center\|4062	Malmesbury Abbey
lign=center\|4063	Bath Abbey	\| \|Rebuilt as Castle Class 5083
lign=center\|4064	Reading Abbey	\| \|Rebuilt as Castle Class 5084
lign=center\|4065	Evesham Abbey	\| \|Rebuilt as Castle Class 5085
lign=center\|4066	Malvern Abbey	Sir Robert Horne	Viscount Horne	Rebuilt as Castle Class 5086
lign=center\|4067	Tintern Abbey	\| \|Rebuilt as Castle Class 5087
lign=center\|4068	Llanthony Abbey	\| \|Rebuilt as Castle Class 5088
lign=center\|4069	Margam Abbey	Westminster Abbey	\|Rebuilt as Castle Class 5089
lign=center\|4070	Neath Abbey	\| \|Rebuilt as Castle Class 5090
lign=center\|4071	Cleeve Abbey	\| \|Rebuilt as Castle Class 5091
lign=center\|4072	Tresco Abbey	\| \|Rebuilt as Castle Class 5092

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