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 ...

At Grouping in 1923, the LNER inherited 131 8K (LNER O4) and 17 8M (LNER O5) locomotives from the GCR. The ROD's asking price for war-surplus locomotives had dropped, and the LNER was quick to add to its O4 fleet. 125 were purchased in December 1923, followed by 48 in February 1925, and a final purchase of 100 in February 1927.

The same boiler design was used on the later three-cylinder O2 2-8-0s. These engines were designed to haul the heavy coal traffic from Peterborough to Ferme Park (London). The design load was eighty wagons carrying 1,300 tons, which represented twenty more wagons than a typical Q1/Q2 load.

Due to the War, the express passenger designs had been shelved, but Gresley tested the new valve gear with a 3-cylinder 2-8-0 (LNER O2) which was completed in 1918. This was followed by a much-needed express goods 2-6-0 engine (LNER K3) which used a simpler version of the conjugated gear.

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.

2012年11月26日 · I assume that Heljan are intending to produce the Gresley 02 2-8-0 in its various forms, but I think one or two posters are confusing the orginal Gresley 01 as being the same class (Later became 03 when the Thompson rebuilds arrived in 1944) There are anumber of detail differences which would preclude any easy rebuld into the earlieir two cylinder loco - unless Graeme know otherwise?

2022年4月29日 · 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.

The layout of the Walschaerts and Gresley valve gear was borrowed from the O2 2-8-0 design. Unusually for a Doncaster design, the P1s also had steam reversing gear, and steam brakes on both the engine and the tender. No. 2393 was completed in June 1925, just in time for the Stockton & Darlington Centenary celebrations in July.

The LNER would often denote major modifications with a slash. E.g. B16/2 is a modified B16. Occasionally such modifications would be so substantial that a completely new class number would be given (eg. an A3 is a modified A1). Modifications of the same class typically share the same webpage. Thompson and Peppercorn both reused class numbers.

This was approved by the LNER in 1924. Initially there were plans for two such engines, although only one was built. Between the initial order in 1924 and construction in 1925, the designed was amended by Gresley to use 3 cylinders at each end, and …