LNWR Class G1

LNWR Class G1

No. 1384 in photographic grey livery
Type and origin
Power type Steam
Designer Charles Bowen Cooke
Builder Crewe Works
Build date 1901-1904
Total produced New builds, 171
Rebuilds, 278
Total, 449
Rebuilder Crewe Works
Specifications
Configuration 0-8-0
Gauge 4 ft 8 1⁄2 in (1,435 mm)
Driver dia. 4 ft 5 1⁄2 in (1.359 m)
Loco weight 60 long tons 15 cwt (136,100 lb or 61.7 t)
Fuel type coal
Boiler pressure 160 psi (1.10 MPa)
Cylinders 2 inside
Cylinder size 20½" x 24"
Performance figures
Tractive effort 25,640 lbf (114.1 kN)
Career
Operators LNWR » LMS » BR
Power class BR, 6F

The London and North Western Railway (LNWR) Class G1 was a class of 0-8-0 steam locomotives. It was a superheated version of the LNWR Class G with 8 inch piston valves.[1] The prototype was rebuilt in 1912 from a member of Class G and a further 170 new locomotives were built between 1912 and 1918. In addition, 278 older locomotives were rebuilt to the G1 specification between 1917 and 1934.

Numbering

Numbering is somewhat complicated. The LNWR used a numbering system based on the lowest available number, with the result that the numbers were scattered through the stock book. The London, Midland and Scottish Railway (LMS) renumbered the engines into a more logical series. However, they also then continued to rebuild engines, which retained the numbers originally assigned by the LMS. British Railways (BR) inherited 98 locomotives in 1948 and numbered them in the range 48892-49384. The number series is not continuous because some numbers in the same range were given to G2A Class locomotives.[2]

Construction and rebuilding list

Ex-LMS No. 9171 - still unrenumbered in 1951, built as a G1 in May 1912 and withdrawn not long after this photograph in February 1952
Source Dates (re)built Total (re)built (Re)built by LNWR LNWR No(s) Rebuilt by LMS LMS No(s) Notes
Prototype Class G 1912 1 1 2653 0 9154
New construction 1912–1918 170 170 ... 0 9155-9334
Class B 1917–1927 91 46 ? 45 ?
Class E 1917–1924 18 12 ... 6 ...
Class F 1921–1924 10 6 1036, 1038, 2570, 2114, 2573, 1369 4 initially: 9349/65/7/72/3/86.
Class D 1925–1934 63 0 n/a 63 9002-64
Class C 1925–1927 5 0 n/a 5 8953/4/62/4/6
Class G ? 91 0 n/a 91 9077-9144
Total: 1912-1934 449 235 see above 214 see above

Some were rebuilt back from Class G2a to Class G1 as they passed through heavy overhaul and received lower pressure boilers.

References

  1. ↑ LNWR Society. "Goods Engines of LNWR - 'G1' Class". Lnwrs.org.uk. Retrieved 2012-04-09.
  2. ↑ Ian Allan ABC of British Railways Locomotives, 1948 edition, part 3, pp 39-40

Further reading

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