LNWR Class G

The London and North Western Railway (LNWR) Class G were several related classes of 0-8-0 steam locomotives. These 0-8-0s were the principal work-horses for freight traffic on the latter-day London & North Western.

LNWR Class G
No. 2653 in photographic grey livery
Type and origin
Power typeSteam
DesignerGeorge Whale
BuilderCrewe Works
Build date1910
Total produced60
RebuilderCrewe Works
Rebuild date1906–17
Number rebuilt32 from Class B
Specifications
Configuration:
​
 • Whyte0-8-0
 • UICD n2
Gauge4 ft 8+1⁄2 in (1,435 mm)
Driver dia.4 ft 5.5 in (1.359 m)
Fuel typeCoal
Boiler pressure160 psi (1.10 MPa)
Heating surface2,043.25 sq ft (189.824 m2)
Cylinders2 inside
Cylinder size20.5 by 24 inches (520 mm × 610 mm)
Career
OperatorsLondon and North Western Railway, London, Midland and Scottish Railway
Disposition1 rebuilt to Class G1 1912
91 rebuilt to Class G1 1920–37

History

32 of this class were rebuilt from 4-cylinder compound Class B between 1906 and 1917. The outside high-pressure cylinders were removed and the inside low-pressure cylinders were re-used, in their original position, to make a two-cylinder simple expansion engine. The boiler pressure was reduced from 200 psi to 160 psi to keep the tractive effort approximately the same.[1] The rebuilt engines retained their old numbers. Additionally, 60 new Gs were built in 1910. The rebuilt engines were easily distinguished from the new builds by having "piano fronts".

Rebuilding

The first of the class, LNWR No. 2653, was rebuilt to Class G1 in 1912. The remaining 91 engines were inherited by the LMS in 1923. LMS numbers were 9077-9144. The LMS rebuilt them all to Class G1 between May 1924 and 1937, thus rendering the class extinct.

References
  1. LNWR Society. "Goods Engines of LNWR - 'G' Class". Lnwrs.org.uk. Retrieved 9 April 2012.

Further reading
  • Bob Essery & David Jenkinson An Illustrated Review of LMS Locomotives Vol. 2 Absorbed Pre-Group Classes Western and Central Divisions
  • Edward Talbot, The London & North Western Railway Eight-Coupled Goods Engines
  • Willie Yeadon, Yeadon's Compendium of LNWR Locomotives Vol 2 Goods Tender Engines
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