The GNR Classes D2 and D3 were two classes of 51 4-4-0 steam locomotives designed by Henry Ivatt for the Great Northern Railway (GNR). They were the first 4-4-0s to be introduced by the GNR, and Ivatt's first original design for the railway as well.

The LNER D2s were classified as "D1" by the Great Northern Railway (GNR), but were usually known as the "1321" class after the first locomotive. A total of seventy locomotives were built in seven batches between 1898 and 1909.

The D2 (LNER D4) boilers were modified by Ivatt in 1901 to include a 3in wide water space around the firebox. This was to avoid scale accumulations around the foundation ring, and was actually a reversion to earlier GNR practice.

Its boiler was the first domed “standard” boiler with 4ft-5in diameter barrel, superseding the earlier straightback design. No straightback boilers were ever fitted to the 4-4-0s, their use being limited to Classes J5, J8, J9 0-6-0s; F3 0-4-2s; J16 0-6-0STs. The engine was rebuilt (1920) to Class D3 (see later under GRESLEY).

2023年5月22日 · lner d4 (gnr d2) First introduced by the GNR in 1896 the D2 class were also known as the “400” class after the prototype, and were reclassified as D4 by the LNER. No. 400 was followed by fifty more D2s in five batches over the next three years.

At Grouping (1923), the LNER inherited 4-4-0s from all of its major constituents, a distinction shared only with the 0-6-0T. With 920 examples, it was the most numerous tender type after the 0-6-0, amounting to 12% of the total stock.

Preface to The Locomotives of The Great Northern Railway 1847-1910. I n presenting a history of the various types of locomotives which have been constructed for the Great Northern Railway, the compiler is aware of many deficiencies in the work.

GNR Classes D2 and D3 were two classes of 51 4-4-0 steam locomotives designed by Henry A. Ivatt They were the first 4-4-0s to be introduced by the Great Northern Railway (GNR) and Ivatt's first original design for the GNR.

2023年11月20日 · Yes, it may have been predictable, but nonetheless a most suitable illustration for the first issue in the last year of the century and millennium (oh yes it is!). LNER class D3 4-4-0 was formerly GNR class D2 No. 1075, Doncaster works number 727, …

2020年3月4日 · Groves (3A) notes (p. 127) that Ivatt was responsible for 136 6ft 8in 4-4-0 passenger locomotives constructed between 1896 and 1911. These belonged to three classes: GNR D1, D2 and D3.