LNWR G1 Class

LNWR Class G1
Technical specifications
Designer(s)	Charles Bowen Cooke
Manufacturer(s)	Crewe Works
Build date	1901-1904
Total produced	New builds: 171 Rebuilds: 278 Total: 449
Classification	Class: LNWR: G1 Power class: BR: 6F
Rail gauge	4 Foot 8 Inches
Cylinders	Two, inside
Boiler pressure	160 psi (1.10 MPa)
Bore stroke	20½" x 24"
Fuel type	Coal
Performance figures
Tractive effort	25,640 lbf (114.1 kN)
Disposition details
Disposition	Unknown

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. 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.

Construction and rebuilding list

File:Bescot Walsall - Wednesbury freight geograph-2784752-by-Ben-Brooksbank.jpg

Ex-LMS No. 9171 - still unrenumbered in 1951, built as a G1 in May 1912 and withdrawn not long after this photograph in February 1952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. Some were even purchased by the Railway Operating Division (ROD).

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)