LNWR Class B

No. 1881 (later LMS 8900) in photographic grey livery - classified B from 1911

Type and origin
Power type	Steam
Designer	Francis Webb
Builder	Crewe Works
Build date	1901-1904
Total produced	170

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	53 long tons 10 cwt (119,800 lb or 54.4 t)
Fuel type	coal
Boiler pressure	200 psi (1.38 MPa)
Cylinders	4, compound
High-pressure cylinder	(2 outside) 15" x 24"
Low-pressure cylinder	(2 inside) 20 ¹⁄₂" x 24"

Career
Operators	LNWR » LMS
Disposition	26 rebuilt to Class E 1904–08 10 rebuilt to Class F 1906–08 32 rebuilt to Class G 1906–17 91 rebuilt to Class G1 1917–27 11 scrapped 1921–28

The London and North Western Railway (LNWR) Class B was a class of 0-8-0 steam locomotives introduced in 1901.^[1] A development of the three-cylinder compound Class A (though this letter classification was not introduced until 1911), they had a 4-cylinder compound arrangement. 170 were built between 1901-1904.

Rebuilds

Class E

Between 1904 and 1908, Webb's successor George Whale added a leading pony truck to 26 engines, making them 2-8-0s and taking them into Class E (again from 1911).

Class F

Between 1906 and 1908, Whale also rebuilt 10 with larger Experiment-type boiler to Class F, again adding a leading pony truck. (Two more of Class B were also converted to Class F via Class E).

Class G

Neither of the above conversions was particularly successful and, as a result, 32 were rebuilt to Class G with 2-cylinder simple expansion between 1910 and 1917.

Class G1

Whale's Successor Charles Bowen Cooke rebuilt a further 91 direct from Class B to 2-cylinder simple superheated LNWR Class G1 (also known as "Super Ds"). The rebuilds from Class B to Class G1 continued under LMS ownership between 1923 and 1927.

Summary

A total of 170 locomotives was built but No. 134 was destroyed in a boiler explosion at Buxton on 11 November 1921 leaving 169. The rebuilds (some under LMS ownership) totalled 159, leaving 10 unrebuilt.

LMS ownership

The London, Midland and Scottish Railway (LMS) inherited 53 unrebuilt Class B locomotives in 1923 and numbered them 8900-8952. The LMS continued to rebuild them to Class G1 and the number of unrebuilt locomotives dwindled to 10.

Withdrawal

The remaining 10 Class B locomotives were withdrawn in 1927-1928. None were preserved.

References

↑ LNWR Society. "Goods Engines of LNWR - 'B' class". Lnwrs.org.uk. Retrieved 2012-04-09.

London and North Western Railway locomotives

John Ramsbottom (North Eastern Division 1846–1857)

Francis Trevithick (Northern Division 1846–1857)	SFB passenger 187 Velocipede 173 Cornwall 290 Rocket LFB passenger 7ft Single (Raven) 176 Courier SFB goods LFB goods SFB goods tank LFB goods tank

John Ramsbottom (Northern Division 1857–1862)	3020 Cornwall (renewed) 271 DX Problem / Lady of the Lake

Edward Bury (Southern Division 1846–1847)	Bury Bar Frame locomotive

James McConnell (Southern Division 1847–1862)	Bloomer McConnell Goods Wolverton Express Goods

John Ramsbottom (1862–1871)	4ft Shunter Samson Newton Special Tank

Francis William Webb (1871–1903)	Alfred the Great Coal Engine Coal Tank Experiment Dreadnought Teutonic Greater Britain John Hick Dock Tank Precursor Precedent Improved Precedent Jubilee Waterloo 4ft 6in Tank 5ft 6in Tank 18in Goods (Cauliflower) 18in Tank A B 1400 Class

George Whale (1903–1909)	Experiment 19in Express Goods Precursor Precursor Tank Renown C D E F G

Charles John Bowen Cooke (1909–1920)	1185 Claughton George V Queen Mary Prince of Wales Prince of Wales Tank C1 G1 MM

H. P. M. Beames (1920–1921)	380 G2 G2A

George Hughes (1922–1923)	No new locomotive classes

Locomotives of the London and North Western Railway LMS locomotives British Railways steam locomotives

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LNWR Class B

Rebuilds

LMS ownership

Withdrawal

References

Further reading