LNWR Class G

LNWR Class G
Technical specifications
Designer(s)	George Whale
Manufacturer(s)	Crewe Works
Build date	Build date: 1910 Rebuild date: 1906–17
Total produced	Total produced: 60 Number rebuilt: 32 from Class B
Rail gauge	4 Foot 8 Inches
Cylinders	Two, Inside
Boiler pressure	160 psi (1.10 MPa)
Bore stroke	20.5 by 24 inches (520 mm × 610 mm)
Fuel type	Coal
Disposition details
Disposition	1 rebuilt to Class G1 1912 91 rebuilt to Class G1 1920–37

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.

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. 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.

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

London North Western Railway Classes
2-2-2	6ft "Single" Class • 173 Cornwall • 7ft "Large Bloomer" Class • 7ft "Single" Class • "Patent" Class • 6ft 6in "Small Bloomer" Class • H "Special Bloomer" Class • 7ft 6in "Problem"/"Lady of the Lake" Class
2-4-0	6ft "Samson"/"Curved Link Passenger" Class • 6ft 6in "Newton"/"Curved Link Passenger" Class • 5ft 6in "Precursor" • 6ft 6in "Precedent" Class • 2234 "Chopper" Class • "Improved Precedent" Class • "Small Jumbo"/"Waterloo"/"Whitworth" Class • "Crewe Goods" Class
2-4-2	4ft 6in Class • 5ft 6in Class
2-2-2-0	"Experiment" Class (F. W. Webb) • "Dreadnought" Class • "Teutonic" Class
4-2-2-0	No.3026
2-2-2-2	No.687 • No.600 • "Greater Britain" Class • 6ft 3in "John Hick" Class
2-2-4-0	No.2974
4-4-0	"Metropolitan" Class • LNWR "Jubilee" Class • "Alfred the Great" Class • "Benbow" Class • 6ft 9in "Precursor" Class • "Renown" Class • "Queen Mary" Class • "George the Fifth" Class
0-6-2	5ft 3in "Watford" Class • 17in "Coal Tank"
4-6-0	"Experiment" (G. Whale) • "Prince of Wales" Class • "Claughton" Class • No.1361 Prospero • 1400 "Bill Bailey" Class • 19in "Express Goods" Class
4-4-2	"Metropolitan Tank" (Rebuild) • 6ft "Precursor Tank"
4-6-2	2665 "Prince of Wales Tank"
0-6-0	271 Class • DX "Goods" Class • D "Early Goods" Class • "Ostrich" Class • "Wolverton Express Goods" Class • "Special Tank" Class • 17in "Coal Engine" Class • 5ft/18in "Express Goods"/"Crested Goods"/"Cauliflower" Class • DX "Special Goods" Class • 4ft 3in "Square Saddle Tank" Class
0-4-0	"Tram" Class • 4ft 835 "Shunter" Class • 4ft 1201 "Shunter" Class • 2360 Class
0-4-2	835 "Crane Tank" Class • 317 "Bissel" Class
0-8-0	No.2524 • A Class • B Class (F. W. Webb) • C Class • C1 Class • D Class • G Class • G1 Class • G2 Class • G2A Class • G3 Class
2-8-0	E Class • F Class • MM Class
0-8-2	1185 "Shunter" Class
0-8-4	380 Class
2-2-0	"Bury Bar-Frame" Class • B Class (E. Bury)