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 D2s with the new boilers were classified "D3" by both the GNR and LNER. 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).

As is customary, engine classes are organized according to the man who was locomotive superintendent when the class was introduced, and to whom the design is often attributed. Six men held this post during the existence of the Great Northern Railway.

Class: Wheel Arr-angement. Dr. Dia. Cylinders Diam. x Str. Boiler Press. Ad. Wt. EW WO: Grate Area: Evap. Surface: Sup. Surface: Remarks: A1: 4-6-2: 80in: 20x26in(3 ...

2023年11月20日 · LNER class D3 4-4-0 was formerly GNR class D2 No. 1075, Doncaster works number 727, built in June 1897, and rebuilt to class D3 in August 1916. Becoming LNER No. 4075, it was taken into Doncaster works in September 1944 for routine general repair, but while there was selected to haul Officers’ special trains.

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. Unlike most 4-4-0s of the era, the D2s were intended for secondary duties from the getgo.

2023年5月22日 · Built between 1913 and 1921, the sixty five locomotives of the G.N.R. H3 class were reclassified as K2/2’s by the LNER. They were nicknamed ‘Ragtimers’ due to their reputation for rough riding. Despite this they were a succesful …

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.