LNWR Class A

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]

LNWR Class A
No. 50 in photographic grey livery
Type and origin
Power typeSteam
DesignerF.W. Webb
BuilderLNWR at Crewe Works
Build date1893–1900
Total produced111
Specifications
Configuration:
​
 • Whyte0-8-0
 • UICD n3v
Gauge4 ft 8 1⁄2 in (1,435 mm)
Driver dia.4 ft 8 in (1.42 m)
Wheelbase17 ft 3 in (5.26 m)
Loco weight50 long tons 0 cwt (112,000 lb or 50.8 t)
Fuel typeCoal
Boiler pressure175 psi (1.21 MPa)
Heating surface1,489 sq ft (138.3 m2)
CylindersThree, compound
High-pressure cylinder(2 outside) 15 by 24 inches (380 mm × 610 mm)
Low-pressure cylinder(1 inside) 30 by 24 inches (760 mm × 610 mm)
Valve gearStephenson link motion
Career
OperatorsLondon and North Western Railway
Disposition15 rebuilt to Class C 1904–06
62 rebuilt to Class D 1906–09
34 rebuilt to Class C1 1909–12

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.

All Class D locomotives were later rebuilt to Class G1. Some of them, rebuilt to Class G2a, were still running in 1962[2].

Classification

The LNWR letter classification system for 8 coupled engines (A, B, C, etc.) was introduced in 1911.

References
  1. LNWR Society. "Goods Engines of LNWR - 'A' Class". Lnwrs.org.uk. Retrieved 9 April 2012.
  2. Brooksbank, Ben (24 March 1951), English: Ex-LNW 0-8-0 at Bescot., retrieved 19 May 2019

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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