Drawings of GWR Locomotives

0-6-0 Pannier Tanks

See this article for more details of the pannier tank classes

The family resemblance over the years is clear, as is the sometimes striking differences in appearance caused by different types of boiler in the 1076 Class. The variations in the 19th Century classes create a positive minefield for modellers: a locomotive could go into the works for a heavy overhaul and come out looking as if it were of a different class. Its also interesting to note the differences between Wolverhampton and Swindon built locomotives.
I believe the traditional practice of assigning the designer of each class to be the current CME is particularly nominal in the case of these tank engines. There was clearly a steady process of development from the original Armstrong designs, and the work would be done by various junior draughtsman under the direction of the drawing office management.
Some CMEs, Churchward particularly, had a regular and deep participation in the design work, but one suspects that Collett, for instance, whose greatest skills were in production engineering, might have adopted a more hands off approach. Reading K J Cook's Swindon steam, one can imagine an instruction like "We're in for a big batch of new tank engines. Combine the best from the 1854 and 2721 classes and get in all the new features so they run the maximum mileage between overhauls."

The drawings are in roughly chronological order.
If you can look at these drawings and gain a greater understanding of how these pannier tank designs evolved over the years then I will have achieved my aims with these sketches, but if you use them for anything beyond the simplest "plastic bashing" representational modelling then I have done you a disfavour by creating them.
The drawings are arranged so they can be opened in individual tabs of a tabbed browser and flicked between to look at the changes. Whilst they are to a consistent scale, I deliberately haven't shown the scale because of the various caveats noted above.

1813 Sketch Lot 59. 1882. Armstrong 0-6-0T
1076 Sketch (Buffalo) A late 19thC configuration,
not based on a specific diagram.
Armstrong 0-6-0T
633 Sketch Diagram J. Approx 1905.
Wolverhampton built.
Armstrong 0-6-0T
2721 Sketch Diagram A11. Approx 1909. Dean 0-6-0T
1701 Sketch (1854 etc) Diagram A19. Approx 1909. Dean 0-6-0T
1076 Sketch (Buffalo) Diagram A22. Approx 1911 Armstrong 0-6-0T
1501 Sketch (655) Diagram A35
Wolverhampton built.
Dean 0-6-0T
1076 Sketch (Buffalo) Diagram A61. Approx 1921. Armstrong 0-6-0T
1076 Sketch (Buffalo) Diagram B23. Approx 1924. Armstrong 0-6-0T
2721 Sketch Diagram B47. Approx 1924 Dean 0-6-0T
850 Sketch Diagram B51. Approx 1924.
Wolverhampton built.
Dean 0-6-0T
2021 Sketch Diagram B52. Approx 1924
Wolverhampton built.
Dean 0-6-0T
6400 Sketch Diagram B61. 1931. Dean - Wolverhampton built. 0-6-0T
6400 Sketch Diagram B62. 1932. Collett. 0-6-0T
1501 Sketch (645, 655) Diagram B65. Approx 1933. Dean - Wolverhampton built. 0-6-0T
1366 Sketch Diagram B68. 1934. Collett 0-6-0T
8750 Sketch (57xx late Cab) Diagram B70. 1933 Collett 0-6-0T
6400 Sketch Diagram B72. 1936. Collett. 0-6-0T
5700 Sketch Diagram B74. Approx 1934. Collett 0-6-0T
9400 Sketch (94xx) Diagram B78. 1947.
This is the GWR built batch with superheating.
Hawkesworth 0-6-0T
1500 1500 Sketch (15xx) Diagram B80. 1949 Hawkesworth 0-6-0T
1600 Sketch (16xx) Diagram B81. 1949 Hawkesworth 0-6-0T

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The original articles on these pages are mainly contractions from my book, "An Introduction to Great Western Locomotive Development", a study of Great Western Railway locomotive classes, which is published by Pen and Sword Books. You may order it from here.

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© Jim Champ, last edit 4 Dec 2019

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