LNER class D41
|LNER D41 class
ex-GNSR S and T classes
No. 2251 at Elgin station 26 August 1948
|Designer||Class S James Johnson; Class T William Pickersgill|
|Builder||Neilson and Company|
|Total produced||6 Class S, 26 Class T|
|UIC classification||2'Bn (13) and 2'Bh (8)|
|Gauge||4 ft 8 1⁄2 in (1,435 mm)|
|3 ft 9.5 in (1.156 m)|
|Driver diameter||6 ft 1 in (1.854 m)|
|Locomotive weight||Class S: 43 long tons (43.690017078399 t); Class T: 45 long tons (45.7 t)|
|Boiler pressure||165 psi (1.14 MPa)|
|Cylinder size||18 × 26 in (452×660 mm)|
|Valve gear||Stephenson, slide valves|
|Tractive effort||16,184 lbf (71.99 kN)|
|Operator(s)||Great North of Scotland Railway
London and North Eastern Railway
|Class||GNSR: F & T
|Power class||BR: 2P|
The London and North Eastern Railway (LNER) D41 class is a type of 4-4-0 steam locomotive inherited from the Great North of Scotland Railway (GNSR). The class consisted of two similar GNSR classes: 'S' (introduced in 1893 and designed by James Johnson and 'T' (introduced in 1895 and designed by William Pickersgill. The two classes were similar but with detail differences to the boiler.
In December 1893 six locomotives were supplied by Neilson (works nos. 4640-4646) and were numbered 78-83.
Between December 1895 and February 1898 a further twenty six locomotives were supplied by Neilson works nos. 4877-90 and 5212-23, fitted with a larger boiler. Nine of these had been reboilered between 1916 and 1923, making them indistinguishable from the 'S' class, and the remainder were similarly reboilered by the London and North Eastern Railway (LNER) after 1923. The LNER therefore treated them all as a single class, 'D41'.
The first locomotive was withdrawn in 1947.
Eighteen of the 21 locomotives passed into British Railways ownership in 1948 (eleven former class V, and seven former class F). BR renumbered them by adding 60000 to their 1946 LNER number.
The last locomotives were withdrawn in 1946, and survivors lasted until 1953.