Taff Vale Railway A class

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Taff Vale Railway A class
Abercynon (Taff Vale) station geograph-2559836-by-Ben-Brooksbank.jpg
Class 'A' No. 397 at Abercynon 1946 (rebuilt with GWR boiler)
Specifications
Power type Steam
Designer John Cameron
Builder Hawthorn Leslie & Co. (27);
Nasmyth, Wilson & Co. (12);
North British Locomotive Co. (6);
Vulcan Foundry (13)
Build date 1914–1921, rebuilt 1924
Total produced 58
Configuration 0-6-2T
Gauge 4 ft 8 12 in (1,435 mm)
Driver diameter 5 ft 3 in (1.600 m)
Locomotive weight 65.70 long tons (66.75 t)
Fuel type Coal
Boiler pressure As built: 175 psi (1.21 MPa)
Rebuilt: 200 psi (1.38 MPa)
Cylinders Two, inside
Cylinder size As built: 18 in × 26 in (457 mm × 660 mm)
Rebuilt: 17.5 in × 26 in (444 mm × 660 mm)
Tractive effort As built: 21,000 lbf (93.4 kN)
Rebuilt: 21,480 lbf (95.5 kN)
Career
Power class BR: 4P
Retired 1952–1957
Disposition All scrapped

The Taff Vale Railway A class was a class of 0-6-2T steam tank locomotives designed by J. Cameron and introduced to the Taff Vale Railway in 1914. The A class was an enlarged version of the Taff Vale Railway O4 class designed by Tom Hurry Riches in 1907.

42 of the A class locomotives were rebuilt with taper boilers and superheaters by the Great Western Railway (GWR) and vacuum brakes for passenger working in 1924. All 58 passed to British Railways (BR) in 1948, until the introduction of the BR 82xxx 2-6-2Ts in the mid-50s, these engines were widely used on passenger workings in the South Wales Valleys.

The first loco withdrawn was 344 in November 1952 from Cardiff Cathays shed. The last seven locos 370, 373, 381, 383, 390, 398 and 402 were withdrawn together in August 1957 from Abercynon shed. None are preserved.

Builders and numbering[edit]

The locomotives were built in several batches by Hawthorn Leslie, Nasmyth, Wilson and Company, Vulcan Foundry and North British Locomotive Company. Their GWR/BR numbers were in the range 303-440 but they were not consecutive and were intermingled with other classes.

List of TVR A class locomotive orders
Year Quantity Manufacturer Serial Numbers TVR Numbers GWR Numbers Notes
1914 6 Hawthorn Leslie 3057–3062 3, 7, 10, 11, 12, 120 438, 335, 337, 343, 344, 441 441 renumbered 322 in 1947, 438 renumbered 309 sometime between 1948 and 1950
1915 6 North British Locomotive Co. 21156–21161 42, 45, 52, 122, 123, 124 439, 346, 440, 352, 356, 357 439 and 440 renumbered 312 and 316 sometime between 1948 and 1950
1916 6 Vulcan Foundry 3178–3183 125, 127, 128, 129, 130, 132 360, 361, 362, 364, 365, 366
1919 12 Nasmyth, Wilson & Co. 1269–1280 133, 135, 136, 138, 139, 140, 154, 156, 157, 158, 159, 160 367, 370, 371, 372, 373, 374, 377, 378, 379, 380, 381, 382
1920 16 Hawthorn Leslie 3394–3409 20, 134, 144, 149, 162, 164, 165, 400 to 408 345, 368, 375, 376, 383 to 391, 393, 394, 397
1921 5 Hawthorn Leslie 3410–3414 409 to 413 398, 399, 401 to 403 401 and 403 renumbered 303 and 305 in 1947, 402 renumbered 304 sometime between 1948 and 1950
1914 7 Vulcan Foundry 3492–3498 75, 80, 90, 91, 414 to 416 347 to 349, 351, 404, 406, 408 404, 406, and 408 renumbered 306 to 308 sometime between 1948 and 1950

Sources[edit]

  • Ian Allan ABC of British Railways Locomotives, winter 1957/8 edition, part 1, page 22

See also[edit]

External links[edit]