NER Class M1

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NER Class M1/M, Q and Q1
LNER Class D17/1, D17/2 and D18
North Eastern Railway Class M1 no. 1621 (6684770383).jpg
Preserved M1 No. 1621 in the National Railway Museum, York, September 2010
Type and origin
Power type Steam
Designer Wilson Worsdell
Builder NER Gateshead
Build date 1892-1894 (Class M1)
1896-1897 (Class Q)
1896 (Class Q1)
Total produced 20 (Class M1)
30 (Class Q)
2 (Class Q1)
Specifications
Configuration 4-4-0
UIC classification 2′B n2
Gauge 4 ft 8 12 in (1,435 mm)
Leading wheel
diameter
3 ft 7 14 in (1,099 mm)
Driver diameter 7 ft 1 14 in (2,165 mm)
Wheelbase 23 ft 6 in (7.16 m) Class M1/Q engine
23 ft 9 in (7.24 m) Class Q1 engine
12 ft 8 in (3.86 m) tender
45 ft 8 14 in (13.926 m) Class M1/Q total
46 ft 2 34 in (14.091 m) Class Q1 total
Axle load M1: 18.6 long tons (18.9 t)
Q: 18.8 long tons (19.1 t)
Q1: 19.2 long tons (19.5 t)
Locomotive weight 52.5 long tons (53.3 t) (Class M1)
50.3 long tons (51.1 t) (Class Q)
53.5 long tons (54.4 t) (Class Q1)
Tender weight 41.2 long tons (41.9 t)
Locomotive and tender
combined weight
93.7 long tons (95.2 t) (Class M1)
91.5 long tons (93.0 t) (Class Q)
94.7 long tons (96.2 t) (Class Q1)
Boiler 4 ft 4 in (1.32 m) diameter
Boiler pressure 160 psi (1.10 MPa)
Firegrate area 19.8 sq ft (1.84 m2)
Heating surface:
– Tubes
479 sq ft (44.5 m2)
– Flues 291 sq ft (27.0 m2)
– Firebox 123 sq ft (11.4 m2)
– Total 1,097 sq ft (101.9 m2)
Superheater area 204 sq ft (19.0 m2)
Cylinders Two, inside
Cylinder size 19 in × 26 in (483 mm × 660 mm)
20 in × 26 in (508 mm × 660 mm) (No. 1870)
Valve gear Stephenson
Performance figures
Tractive effort 14,974 lbf (66.61 kN) (Class M1/Q)
13,990 lbf (62.23 kN) (No. 1869)
15,500 lbf (69 kN) (No. 1870)
Career
Operator(s) North Eastern Railway, London & North Eastern Railway, British Rail
Withdrawn 1931–1945 (Class M1)
1931–1948 (Class Q)
1930 (Class Q1)
Disposition One M1 preserved (No. 1621); remainder M1, Q & Q1 scrapped

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[edit]

Classification is 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[edit]

  • 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.[1]
  • 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.[2]

Withdrawal[edit]

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[edit]

References[edit]

  1. ^ Hoole, Ken (1983). Trains in Trouble: Vol. 4. Truro: Atlantic Books. p. 19. ISBN 0-906899-07-9. 
  2. ^ Gerard, Malcolm; Hamilton, J. A. B. (1981) [1967 pages=37-40]. Trains to Nowhere. London: Georg Allen & Unwin. ISBN 0-04-385084-7. 

External links[edit]