GNR: 461, LNER: 3921-3987, BR: 63921-63987: Locale: Eastern Region: Withdrawn: 1948, 1960 – 1963: Disposition: All scrapped: The Great Northern Railway (GNR) Class O2 was a class of three-cylinder 2-8-0 steam locomotives designed by Nigel Gresley for freight work and built by the GNR from 1921.

The GNR O2 was development of the O1, which initially differed almost only in the number and arrangement of the cylinders. Instead of the previous two cylinders, three smaller ones were now used to improve power transmission and smooth running. For the first time, Gresley used his special valve motion on these locomotives, in which the inner ...

The Gresley O2 2-8-0 Locomotives. The O2 was a three cylinder development of Gresley's O1 2-8-0 mineral locomotive, and was the first design to use his conjugated valve gear. In 1915, Gresley applied for patent rights for a conjugated valve gear using either rocking shafts or motion levers to control the valves on the central cylinder on a three cylinder locomotive.

The Great Northern Railway (GNR) Class O2 was a class of three-cylinder 2-8-0 steam locomotives designed by Nigel Gresley for freight work and built by the GNR from 1921. Further examples were built by the London and North Eastern Railway (LNER) from 1924. The LNER created four subclasses: O2/1, Introduced 1921. Development of experimental Gresley GNR 3-cylinder locomotive (LNER 3921 ...

The LNER 2-8-0 Locomotives. Of the four LNER constituents that adopted the 0-8-0, only the GCR and GNR switched to 2-8-0s - significantly, both companies with long-distance coal traffic. Robinson launched his design for the GCR in 1911, while Gresley's two-cylinder 1913 design on the GNR was followed by a three-cylinder version five years later.

Gresley design GNR class O2. Weight 74-79 tons; Pressure: 180psi; Cyls(3): 18 x26; DW: 4 ft 8; TE: 36,470 lbs. BR # LNER # Great Northern Railway # Name Built Wdrn 1950 shed Last shed Notes Photos; 3461: May1918: May1948: 40E - Langwith Jct.

The Great Northern Railway (GNR) Class O2 was a class of three-cylinder 2-8-0 steam locomotives designed by Nigel Gresley for freight work and built by the GNR from 1921. Further examples were built by the London and North Eastern Railway (LNER) from 1924.

GNR Class O2 No. 3841 Technical specifications. Serial number(s) 1939. Manufacturer(s) Doncaster Works. Build date. 1942. Wheel arrangement. 2-8-0. Rail gauge. Standard gauge. No. 3841 was a class O2 2-8-0 steam locomotive that was built for the London, North Eastern Railway by Doncaster Works in 1942. External links [] BRDatabase;

Alongside on the right is O2/2 No. 63941 with its distinctive GNR-type cab and GNR tender. Photograph taken by C.J.B. Sanderson The O2 locomotives were powerful three-cylinder heavy mineral engines with a 2-8-0 wheel arrangement. The first, a prototype, was completed in May 1918 by the Great Northern Railway (GNR).

The Great Northern Railway (GNR) Class O2 was a class of three-cylinder 2-8-0 steam locomotives designed by Nigel Gresley for freight work and built by the GNR from 1921. Further examples were built by the London and North Eastern Railway (LNER) from 1924. The LNER created four subclasses: O2/1, Introduced 1921.