LNWR Greater Britain class | |||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LNWR No. 2053 Greater Britain
|
|||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||
|
Type and origin | |
---|---|
Power type | Steam |
Designer | F. W. Webb |
Builder | Crewe Works |
Serial number | 3292, 3435, 3472–3479 |
Build date | 1892–1894 |
Total produced | 10 |
Specifications | |
---|---|
Configuration: |
|
• Whyte | 2-2-2-2 |
• UIC | 1AA1 n3v |
Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
Leading dia. | 3 ft 10 1⁄2 in (1,181 mm), plus 3 in (76 mm) tyres |
Driver dia. | 6 ft 10 in (2.083 m) |
Trailing dia. | 3 ft 10 1⁄2 in (1,181 mm), plus 3 in (76 mm) tyres |
Wheelbase |
|
Loco weight | 52 long tons (53 t) |
Fuel type | Coal |
Water cap | 2,000 imp gal (9,100 l; 2,400 US gal) |
Boiler: |
|
• Diameter | 4 ft 3 in (1.295 m) |
• Tube plates | 18 ft 6 in (5.639 m) |
Heating surface | 1,505.7 sq ft (139.88 m2) |
Cylinders | Three, compound: two outside high pressure for trailing drivers, one inside low pressure for leading drivers |
High-pressure cylinder | 15 in × 24 in (381 mm × 610 mm) |
Low-pressure cylinder | 30 in × 24 in (762 mm × 610 mm) |
Valve gear | Stephenson |
Career | |
---|---|
Operators | London and North Western Railway |
Scrapped | March 1906 – July 1907 |
Disposition | All scrapped |
The London and North Western Railway (LNWR) Greater Britain class was a class of ten 2-2-2-2 steam locomotives designed for express passenger work by F. W. Webb.
The first of the ten locomotives was built in October 1891, and a second followed in May 1893; the remaining eight came from Crewe Works in April and May 1894.
They were three-cylinder compound locomotives: the two outside high pressure cylinders drove the trailing drivers via Howe-Stephenson valve gear, the one inside low pressure cylinder drive the leading drivers via a slip eccentric. There was no connection between the two sets of drivers.
All the locomotives were named; one unusual feature (shared with the John Hick class) was that the names were split over two nameplates, one on each driving wheel splasher. This necessitated the use of two-word names, rather than some of the abbreviated names the LNWR had previously used.
They continued in service until Webb's retirement. His successor, George Whale preferred simple superheated locomotives; consequently they were all scrapped between 1906 and 1907.