| GNR O1/LNER O3 Class | |
|---|---|
| No. 3491 at Immingham Locomotive Depot 1947 | |
| Power type | Steam |
| Designer | Nigel Gresley |
| Builder | GNR Doncaster Works |
| Build date | 1914-1919 |
| Total produced | 20 |
| Configuration | 2-8-0 |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Leading wheel diameter |
3 ft 2 in (0.97 m) |
| Driver diameter | 4 ft 8 in (1.42 m) |
| Locomotive weight | 76.2–78.65 long tons (77.4–79.91 t) |
| Fuel type | coal |
| Boiler pressure | 180 psi (1.2 MPa) |
| Cylinders | 2 |
| Cylinder size | 21 × 28 in (530 × 710 mm) |
| Tractive effort | 33,735 lbf (150.06 kN) |
| Class | 8F |
The Great Northern Railway (GNR) Class O1 was a class of two-cylinder 2-8-0 steam locomotive designed by Nigel Gresley for heavy freight work and built by the GNR between 1913 and 1919.
Contents |
Gresley designed the O1 2-8-0 for the heavy coal trains on the mainline from Grantham to London, ordering five examples 1913, which were completed at Doncaster in 1914. A further fifteen were ordered in January 1916, but due to the First World War delays were incurred and construction was was transferred to the North British Locomotive Company, who delivered a further ten in April 1918, followed by a further five in 1919.
The class was re-designated O3 by the London and North Eastern Railway in 1944.
Seventene exsmples survived into British Railways ownership in 1948, but all had been withdrawn by 1952.
|
||||||||||||||||||||||||||||||||||||||||||