Rebuilding
| BR Rebuilt West Country/Battle of Britain classes | |
|---|---|
| Preserved Rebuilt Battle of Britain class No. 34059 Sir Archibald Sinclair. at Sheffield Park, Bluebell Railway | |
| Power type | Steam |
| Designer | R. G. Jarvis (after Oliver Bulleid) |
| Rebuilder | SR Brighton/Eastleigh Works |
| Rebuild date | 1955–1961 |
| Number rebuilt | 60 |
| Configuration | 4-6-2 (Pacific) |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Leading wheel diameter |
3 ft 1 in (0.940 m) |
| Driver diameter | 6 ft 2 in (1.880 m) |
| Trailing wheel diameter |
3 ft 7 in (1.092 m) |
| Length | 67 ft 4.75 in (20.54 m) |
| Locomotive weight | 91.16 long tons (92.6 t) |
| Fuel type | coal |
| Fuel capacity | 5.00 long tons (5.1 t) |
| Water capacity | 5,200 imp gal (23,640 L; 6,240 US gal) |
| Boiler pressure | 280 psi (1.93 MPa) |
| Firegrate area | 38.25 sq ft (3.55 m2) |
| Cylinders | 3 |
| Cylinder size | 16.375 in × 24 in (416 mm × 610 mm) |
| Tractive effort | 27,720 lbf (123.3 kN) |
| Career | Southern Region of British Railways |
| Class | BR: Rebuilt Light Pacifics |
| Power class | BR (June 1957): 7P5F BR (November 1961): 7P6F |
| Locale | Great Britain |
Due to the problems experienced with the class, and following the success of the rebuilt Merchant Navy class designed by R. G. Jarvis, British Railways ordered the rebuilding of sixty locomotives to a more conventional design at Eastleigh between 1957 and 1961. The first locomotive to be rebuilt was No. 34005 Barnstaple, which adopted many features from the BR 'Standard' locomotive classes. The casing was removed and replaced with conventional boiler cladding, boiler pressure reduced to 250 psi (1.72 MPa) and the chain-driven valve gear was replaced with modified Walschaerts valve gear fitted between the frames. The rapid onset of the 1955 Modernisation Plan during the early 1960s meant that the remaining fifty locomotives were not rebuilt, and continued in as-built condition until withdrawal.
Read more about this topic: SR West Country And Battle Of Britain Classes
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