GER Class B74

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GER Class B74
LNER Class Y4
Stratford 2 Locomotive Depot geograph-2382200-by-Ben-Brooksbank.jpg
Departmental (Service) locomotive No. 33 at Stratford Locomotive Depot, 18 February 1961
Type and origin
Power typeSteam
Designer A. J. Hill
Builder Stratford Works
Build date1913–1921
Total produced5
Specifications
Configuration:
   Whyte 0-4-0T
   UIC B n2t
Gauge 4 ft 8+12 in (1,435 mm)
Driver dia.3 ft 10 in (1.168 m)
Wheelbase 6 ft 0 in (1.829 m)
Length24 ft 1+12 in (7.35 m) over buffers
Axle load 19 long tons 1 cwt (42,700 lb or 19.4 t)
Loco weight38 long tons 1 cwt (85,200 lb or 38.7 t) full
Fuel typeCoal
Fuel capacity0 long tons 15 cwt (1,700 lb or 0.8 t)
Water cap.750 imp gal (3,410 L; 901 US gal)
Firebox:
  Firegrate area
13.9 sq ft (1.29 m2)
BoilerLNER Diagram 40
Boiler pressure180 lbf/in2 (1.24 MPa)
Heating surface980.5 sq ft (91.09 m2)
  Tubes905.4 sq ft (84.11 m2)
  Firebox75.1 sq ft (6.98 m2)
SuperheaterNone
Cylinders Two, outside
Cylinder size 17 in × 20 in (432 mm × 508 mm)
Valve gear Walschaerts
Valve typeSlide valves
Performance figures
Tractive effort 19,224 lbf (85.51 kN)
Career
Operators
Class
  • GER: B74
  • LNER: Y4
Power classBR: 0F
NicknamesPots
Axle load classLNER/BR: RA 6
Withdrawn1955-1957 (4), 1963 (1)
DispositionAll scrapped

The GER Class B74 was a class of five 0-4-0T steam locomotives designed by Alfred John Hill for the Great Eastern Railway. They all passed to the London and North Eastern Railway at the 1923 grouping and received the LNER classification Y4.

Contents

History

These locomotives had 17-by-20-inch (432 by 508 mm) outside cylinders driving 3-foot-10-inch (1.168 m) wheels. They were built to replace the older, less powerful Class 209 (LNER Class Y5). From 1914 two of the class worked the Globe Road & Devonshire Street goods yards. [1]

Table of orders and numbers [2]
YearOrderManufacturerQuantityGER Nos.LNER Nos.LNER 1944 Nos.Notes
1913B74 Stratford Works 122772278125
1914B77 Stratford Works 2228, 2267228, 7226,8126, 8127
1921A82 Stratford Works 2229, 2107229, 72108128, 8129

All were still in service at the 1923 grouping; the LNER adding 7000 to the numbers of nearly all the ex-Great Eastern locomotives, including the Class B74 locomotives. There were renumbered 8125–8129 in the 1944 renumbering scheme. At nationalisation in 1948, British Railways added 60000 to their numbers.

In 1952, number 68129 was transferred to the Service (departmental) list and renumbered 33. Withdrawals started in 1955 with 68125, with 68127 and 68128 going in 1956 and 68126 in 1957. The last to be withdrawn was 33, in 1963.

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References

Notes

  1. Bradley, Richard (October 2019). "Devonshire Street - birthplace of the Eastern Counties Railway". Great Eastern Journal. 180: 34.
  2. Aldrich 1969, p. 108.

Bibliography