NER Class S

NER Class S
LNER Class B13

Type and origin Power type Steam Designer Wilson Worsdell Build date 1899-1909 Total produced 40 Rebuild date 1913-1925

Specifications Configuration 4-6-0 Leading dia Driver diameter Wheelbase engine 12 ft 8 in (3.86 m) tender total Axle load 19.7 long tons (20.0 t) Loco weight 64.3 long tons (65.3 t) Tender weight 43.5 long tons (44.2 t) Loco & tender weight 107.8 long tons (109.5 t) Boiler 4 ft 9 in (1.45 m) Boiler pressure 160 psi (1.1 MPa) Firegrate area 23 sq ft (2.1 m2) Heating surface 1,659 sq ft (154.1 m2)  • Tubes 884 sq ft (82.1 m2)  • Flues 379 sq ft (35.2 m2)  • Firebox 120 sq ft (11 m2) Superheater:  • Heating area 276 sq ft (25.6 m2) Cylinders 2 (outside) Cylinder size 20 in × 26 in (510 mm × 660 mm) Valve gear Stephenson

Performance figures Tractive effort 19,309 lbf (85.89 kN)

Career Operators North Eastern Railway, London & North Eastern Railway Retired 1928-1938 Disposition all scrapped

The North Eastern Railway Class S (LNER Class B13) was a 4-6-0 type of steam locomotive designed for express passenger workings. The first example was built in 1899. They were very similar to the NER Class S1, except for the smaller wheels of the Class S.

Design

They were designed to reduce double heading on the East Coast Main Line. However they steamed poorly, with a smaller and shallower grate than was used even by other locomotives at the time, and the 4-4-0s of the NER Class R quickly replaced them, with the 4-4-2 layout being preferred for later express passenger designs. The class were re-classified as London and North Eastern Railway Class B13 in 1923.

Modifications

The first seven locomotives had slide valves, while the remainder had piston valves. The slide valve engines were later fitted with piston valves. Schmidt superheaters were fitted between 1913 and 1925.

Numbering

Reference

NER number	Build date	Notes
2001	1899
2002	1899
2003	1899
2004	1899
2005	1899
2006	1899
2007	1900
2008	1900
2009	1900
2010	1900
726	1906
740	1906
757	1906
760	1906
761	1906
763	1906
766	1906
768	1906
775	1906
1077	1906
738	1908
739	1908
741	1908
743	1908
744	1908
745	1908
746	1908
747	1908
748	1908
749	1908
750	1908
751	1908
752	1908
753	1908
754	1909
755	1909
756	1909
758	1909
759	1909
762	1909

Withdrawal

They were withdrawn between 1928 and 1938.

External links

• LNER Encyclopedia]