GWR Route: Banbury to Wolverhampton

Leamington Spa - Grouping Locomotives: gwrls890

An unidentified GWR 4-6-0 Star class locomotive stands at the London end of an express train standing at the down platform. Its not known whether the locomotive is adding the horsebox to the end of a train progressing onwards to the north or whether the service has terminated at Leamington and is being taken out to reverse back in to the up platform.

The prototype four cylinder 'Star' locomotive was built in May 1906 with experience learned from the 'Saint' class and the French De Glehn engines. By incorporating the De Glehn cylinder arrangement with two sets of valve gear into an otherwise standard design, G. J. Churchward produced a masterpiece which harmonised the best features of the different engines on trial.

Given number 40, she was built in 4-4-2 configuration as Churchward had not decided which was the best wheel arrangement for the Great Western. With cylinders of 14¼ x 26 inches and an unusual scissors valve gear (Walschaert's valve gear was fitted as standard on all other 'Star' locomotives), she ran unnamed until October 1906 when she became known as 'North Star'. Number 40 was rebuilt in configuration 4-6-0 in November 1909 and was also given the curved framing that was built on the second batch of production engines. In December 1912, 'North Star' was renumbered as 4000. One difference in North Star compared to the rest of the 'Star' class was that the footplate was built 2½ inches higher and even when this engine was rebuilt in a 'Castle' class locomotive, the footplate kept the non-standard height.

Number 4011 Knight of the Garter was fitted with the Swindon no. 1 superheater as standard together with the French type of bogie. All members of the class were so fitted with this bogie. The Swindon no. 3 superheater was initially fitted to number 4021 King Edward and became standard fitting from engine number 4031 Queen Mary, again, previous locomotives of the class were modified from 1913. The modification which gave the 'Stars' a little more power was an increase in the cylinder bore to 15 inches. This modification was applied first to number 4041 Prince of Wales and soon afterwards the cylinders of earlier locomotives were also increased in size. Courtesy of the Great Western Archive copyright John Daniel 2000.

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