LNWR Class A
| LNWR Class A | |
|---|---|
| Type and origin | |
| Power type | Steam |
| Designer | F.W. Webb |
| Builder | LNWR at Crewe Works |
| Build date | 1893–1900 |
| Total produced | 111 |
| Specifications | |
| Configuration | 0-8-0 |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Driver diameter | 4 ft 8 in (1.42 m) |
| Wheelbase | 17 ft 3 in (5.26 m) |
| Locomotive weight | 50 long tons 0 cwt (112,000 lb or 50.8 t) |
| Fuel type | Coal |
| Boiler pressure | 175 psi (1.21 MPa) |
| Heating surface: – Total | 1,489 sq ft (138.3 m2) |
| Cylinders | Three, compound |
| High-pressure cylinder size | (2 outside) 15 by 24 inches (380 mm × 610 mm) |
| Low-pressure cylinder size | (1 inside) 30 by 24 inches (760 mm × 610 mm) |
| Valve gear | Stephenson link motion |
| Career | |
| Operator(s) | London and North Western Railway |
| Disposition |
15 rebuilt to Class C 1904–06 62 rebuilt to Class D 1906–09 34 rebuilt to Class C1 1909–12 |
The London and North Western Railway (LNWR) Class A was a class of 0-8-0 steam locomotives. From 1893 to 1900, Crewe Works built 111 of these engines, which had a three-cylinder compound arrangement, and were designed by Francis Webb. According to the LNWR Society, 110 were built between 1894 and 1900.[1]
Rebuilding
Like the other Webb compounds, they proved problematic, so in 1904 George Whale began rebuilding these to simple expansion engines. Fifteen were converted to Class C between 1904–1906, 62 to Class D between 1906–1909, with the remaining 34 rebuilt by Charles Bowen Cooke to Class C1 between 1909-1912.
Classification
The LNWR letter classification system for 8 coupled engines (A, B, C, etc.) was introduced in 1911.
References
- ↑ LNWR Society. "Goods Engines of LNWR - ‘A’ Class". Lnwrs.org.uk. Retrieved 2012-04-09.
Further reading
- Talbot, Edward. The London & North Western Railway Eight-Coupled Goods Engines.
- Yeadon, Willie. Yeadon's Compendium of LNWR Locomotives Vol 2 Goods Tender Engines.
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