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The North Eastern Railway Class M1 (LNER Class D17/1) is a class of 4-4-0 steam locomotive, designed by Wilson Worsdell. 20 initial engines were built, then 30 further units were built, designated Class Q (LNER Class D17/2).

Classification[]

Classification was complex. The NER initially classified these locomotives "M1", while a variant (with compound expansion) was classified "M". The compound was later re-classified "3CC" and the "M1" was re-classified "M".

Under LNER ownership the "M" (formerly "M1") became LNER Class D17/1 and the "3CC" (formerly "M") became LNER Class D19.

This table summarises LNER classes D17, D18 and D19, which were all very similar:

Original NER class New NER class LNER Class Cylinders Driving wheels
M1 M D17/1 (2) 19″ × 26″ 7′ 1¼″
Q - D17/2 (2) 19½″ × 26″ 7′ 1¼″
Q1 - D18 (2) 19½″ × 26″ 7′ 7¼″
M 3CC D19 HP (1) 19″ × 26″

LP (2) 20″ × 24″

7′ 1¼″
  • HP = high-pressure cylinder, LP = low-pressure cylinders

Accidents and incidents[]

  • On 4 October 1894, locomotive No. 1622 was one of two locomotives hauling a sleeping car train which overran signals and collided with a freight train that was being shunted at Castle Hills, Yorkshire. One person was killed.
Main article: Hull Paragon rail accident
  • On 14 February 1927, locomotive No. 1628 was hauling a passenger train that was in a head-on collision with another at Hull Paragon station, Yorkshire due to a signalman's error. Twelve people were killed and 24 were injured.

Withdrawal[]

The last two D17/1s were withdrawn in 1945. Number 1629 was scrapped but number 1621 was saved for preservation.

No D17/1s passed into British Railways ownership. Two D17/2s did (BR numbers 62111 and 62112) but they were withdrawn in February 1948.

Preservation[]

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