LNWR Class A

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 n3vG
Gauge4 ft 8+1⁄2 in (1,435 mm)
Driver dia.4 ft 5.5 in (1.359 m)[1]
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

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.[2]

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 and 1906, 62 to Class D between 1906 and 1909, with the remaining 34 rebuilt by Charles Bowen Cooke to Class C1 between 1909 and 1912.

All Class D locomotives were later rebuilt to Class G1. Some of them, rebuilt to Class G2A, were still running in 1962.[3]

Classification

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

References

  1. ^ Ahorns, Ernest Leopold (1927). The British steam railway locomotive, 1825-1925. London: Locomotive Pub. Co. p. 291.
  2. ^ LNWR Society. "Goods Engines of LNWR - 'A' Class". Lnwrs.org.uk. Archived from the original on 20 August 2008. Retrieved 9 April 2012.
  3. ^ Brooksbank, Ben (24 March 1951), English: Ex-LNW 0-8-0 at Bescot., retrieved 19 May 2019

Further reading

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Wikimedia Commons has media related to LNWR A class.
  • 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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