NER Class S3
|NER Class S3
LNER Class B16
No. 61469 at Croxdale 12 June 1954
|Gauge||1,435 mm (4 ft 8 1⁄2 in)|
|3 ft 1 in (0.94 m)|
|Driver diameter||5 ft 8 in (1.73 m)|
|Wheelbase||27 ft 8 in (8.43 m) engine
12 ft 8 in (3.86 m) tender
52 ft 5.8 in (15.997 m) total
|Axle load||20 long tons (20 t)|
|Locomotive weight||B16/1, 77.7 long tons (78.9 t)
B16/2, 79.2 long tons (80.5 t)
B16/3, 78.95 long tons (80.22 t)
|Tender weight||46.6 long tons (47.3 t)|
|Locomotive and tender
|B16/1, 124.3 long tons (126.3 t)
B16/2, 125.8 long tons (127.8 t)
B16/3, 125.55 long tons (127.56 t)
|Boiler||5 ft 6 in (1.68 m) diameter|
|Boiler pressure||180 psi (1.2 MPa)|
|Firegrate area||27 sq ft (2.5 m2)|
|866 sq ft (80.5 m2)|
|– Flues||534 sq ft (49.6 m2)|
|– Firebox||166 sq ft (15.4 m2)|
|– Total||1,958 sq ft (181.9 m2)|
|Superheater area||392 sq ft (36.4 m2)|
|Cylinder size||18 1⁄2 in × 26 in (470 mm × 660 mm)|
|Tractive effort||30,312 lbf (134.83 kN)|
|Railroad(s)||North Eastern Railway, London & North Eastern Railway, British Railways|
The North Eastern Railway Class S3, classified B16 by the LNER, was a class of 4-6-0 steam locomotive designed for mixed traffic work. It was designed by Vincent Raven and introduced in 1920. The earlier members of this class were fitted with Westinghouse Brakes - all of this equipment was removed during the 1930s.
Seventy S3/B16 locomotives were built between 1919 and 1924. The NER began numbering this class in the range No. 840 through to No. 943 (though not contiguously), those built after late 1922 (from No. 2363 onwards) directly receiving their LNER number. In 1923 all seventy loco's passed to the London and North Eastern Railway (LNER). Some of the existing members were subsequently rebuilt, as shown below (the initially built locomotives being re-designated class B16/1. Seven were rebuilt by Gresley, becoming class B16/2 and seventeen, by Thompson, designated class B16/3). Under the LNER re-numbering scheme, of 1946, they received numbers 1400-1468. Sixty-nine passed into British Railways ownership in 1948 and they were again re-numbered in the sequence 61400-61478. (Numbers 61400 to 61409 were directly re-numbered as 61469 to 61478). One locomotive, No. 925, was badly damaged during a German air-raid, on York, 29 April 1942 and was subsequently scrapped, along with A4 No. 4469 Sir Ralph Wedgwood. The last, of any variety of B16, was scrapped in 1964 and none have been preserved.
- B16/1 Introduced 1920, NER design by Vincent Raven with inside Stephenson valve gear.
- B16/2 Introduced 1937, LNER rebuild of B16/1 by Nigel Gresley with Walschaerts valve gear on the outside cylinders and Gresley conjugated valve gear on the inside cylinder.
- B16/3 Introduced 1944, LNER rebuild of B16/1 by Edward Thompson with three sets of Walschaerts valve gear.
- Ian Allan ABC of British Railways Locomotives, 1948 edition, part 4, page 10