| NER 901 Class | |
|---|---|
| Power type | Steam |
| Build date | 1872-1882 |
| Total produced | 55 |
| Rebuild date | 1884-1885 |
| Number rebuilt | 55 |
| Configuration | 2-4-0 |
| Leading wheel diameter |
4 ft 6 in (1.37 m) |
| Driver diameter | 7 ft 0 in (2.13 m) |
| Wheelbase | 16 ft 1 in (4.90 m) engine 12 ft 3 in (3.73 m) tender 37 ft 1 in (11.30 m) total |
| Axle load | 14 long tons (14 t) |
| Locomotive weight | 39.7 long tons (40.3 t) |
| Tender weight | 29.4 long tons (29.9 t) |
| Locomotive & tender combined weight |
69.6 long tons (70.7 t) |
| Boiler | 4 ft 3 in (1.30 m) diameter |
| Boiler pressure | 160 psi (1.1 MPa) |
| Firegrate area | 15.6 sq ft (1.45 m2) |
| Heating surface: Tubes |
995 sq ft (92.4 m2) |
| Heating surface: Firebox |
98 sq ft (9.1 m2) |
| Heating surface: Total |
1,093 sq ft (101.5 m2) |
| Cylinders | 2 (inside) |
| Cylinder size | 17 × 24 in (430 × 610 mm) or 171⁄2 × 24 in (440 × 610 mm) 18 × 24 in (460 × 610 mm) rebuilt |
| Valve gear | Stephenson |
| Tractive effort | 12,590 lbf (56.0 kN) |
| Career | North Eastern Railway London & North Eastern Railway |
| Retired | All retired by 1925 |
| Disposition | 1 preserved (No. 910), 54 scrapped |
The NER 901 Class was a class of 2-4-0 steam locomotive of the North Eastern Railway. Between 1872-1882 55 of the class were built for the NER.
From there introduction the 901 class 2-4-0's put in excellent service on the Newcastle-Edinburgh and Newcastle-York runs hauling 160-170 ton loads. During 1884 engines based at Gateshead depot were averaged 4,400 miles per month. Apart from minor instances of updating only two of the class underwent extensive rebuilding. More substantial modifications were made to the last of the Neilson-built engines. No. 933 which in 1907 was not only reboilered but converted into a 4-4-0 but was scrapped in 1914. It became one of 29 of the class withdrawn between 1913 and 1914 and, but for the onset of the first world war, the rest would have follow suit. Instead the curtailing of new construction led to a shortage of motive power and new work was found for the 901 class. Some were drafted on to the coastal line between Scarborough and Bridlington but the majority were stationed at Darlington. From here they worked passenger services over the Stainmore route to Kirkby Stephen,Penrith and Tebay. Darlington also kept them on as pilots. By 1923 only ten of the class remained and the now preserved No.910 was amongst the final five to be withdrawn from service.
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