NBR F class

The NBR F Class (LNER Class J88) was a class of 0-6-0 tank locomotives, designed by William P. Reid on the North British Railway.[1] They were used for dockyard shunting duties.[1]

NBR F Class
LNER Class J88
BR 68351 (still in LNER guise as 8351) (left) in steam at Shore Road Depot 28 August 1948
Type and origin
Power typeSteam
DesignerWilliam P. Reid
BuilderNBR Cowlairs Works
Build date1904–1919[1]
Total produced35
Specifications
Configuration:
​
 • Whyte0-6-0T
 • UICC n2t
Gauge4 ft 8 1⁄2 in (1,435 mm)
Driver dia.3 ft 9 in (1.143 m)[1]
Wheelbase11 ft 0 in (3.35 m)
Wheel spacing
(Asymmetrical)
  • 5 ft 3 in (1.60 m) +
  • 5 ft 9 in (1.75 m)
Length27 ft 6 3⁄4 in (8.40 m) over buffers
Axle load15 LT 12 cwt (15.9 t)
Loco weight38 LT 14 cwt (39.3 t) (full)
Fuel typeCoal
Fuel capacity2 long tons 1 cwt (2.1 t)
Water cap850 imp gal (3,900 l; 1,020 US gal)
Firebox:
 • Firegrate area		14.5 sq ft (1.35 m2)
Boiler:
​
 • ModelLNER diagram 87
 • Pitch6 ft 6 1⁄2 in (1.994 m)
 • Tube plates8 ft 8 1⁄2 in (2.654 m)
 • Small tubes142 × 1 3⁄4 in (44 mm)
Boiler pressure130 lbf/in2 (0.90 MPa)
Heating surface651.2 sq ft (60.50 m2)
 • Tubes585.5 sq ft (54.39 m2)
 • Firebox65.7 sq ft (6.10 m2)
SuperheaterNone
CylindersTwo, outside
Cylinder size15 in × 22 in (381 mm × 559 mm)
Valve gearStephenson
Valve typeSlide valves
Performance figures
Tractive effort12,155 lbf (54.07 kN)
Career
Operators
Power classBR: 0F
Axle load classLNER: RA 3
LocaleScotland
Withdrawn1954–1962
DispositionAll scrapped

Background

When the North British railway required more dock shunting tank locomotives in 1904, rather than order further copies of the railway's standard G class (LNER class Y9) 0-4-0ST , William P. Reid inroduced a completely new 0-6-0T locomotive design.[2]

Design

The class had a 3-foot-10-inch (1.17 m) diameter, 10-foot-5-inch (3.18 m) long boiler producing 130 pounds-force per square inch (0.90 MPa) saturated steam to two outside 17-by-24-inch (432 mm × 610 mm) cylinders, which were connected to the 3-foot-9-inch (1.143 m) driving wheels by inside Stephenson valve gear actuating slide valves.[3]

Construction

All thirty five locomotives were built at the NBR's Cowlairs Works in five batches between 1904 and 1919.[2]

Table of orders and numbers[4]
YearQuantityNBR No.LNER No.LNER 1946 No.Notes
1904–056836–8419836–98418320–8325
19056842–8479842–98478326–8331
19096233–2389233–92388332–8337
19121066, 114, 116–119, 121, 130, 132, 1529066, 9114, 9116–9119, 9121, 91309, 9132, 91528338–8347
19197277, 290, 288–289, 87, 271, 2799277, 9290, 9288–9289, 9087, 9271, 92798348–8349, 8353–8354, 8350–8352

Service history

They were used on docks and harbours on both the east and west coasts of Scotland. They were usually allocaed to St. Margaret's (Edinburgh), Eastfield (Glasgow), Thornton, Kipps, Polmont, Sirling and Haymarket (Edinburgh) locomotive depots.[5]

At the grouping in 1923, they all passed to the London and North Eastern Railway, who classified them as class J88.[1] They were all still in service at Nationalisation in 1948. BR added 60000 to their LNER 1946 number.

Withdrawal

One locomotive was withdrawn in 1954, after falling into Kirkcaldy harbour, but later the class were gradually displaced by diesel shunters during the 1950s, with the last withdrawn in December 1962.[1] All members of the class were scrapped, and there is no surviving example in preservation.[1]

Table of withdrawals[6]
YearQuantity in
service at
start of year		Quantity
withdrawn		Locomotive numbersNotes
195435168341
195534168337
195633168323
195732168351
1958311168321, 68322, 68324, 68327, 68328, 68330, 68333, 68339, 68340, 68347, 68348
195920468326, 68329, 68331, 68334
196016668320, 68332, 68343, 68349, 68354, 68352
196110368325, 68338, 68344
19627763335, 68336, 68342, 68345, 68346, 68350, 68353

References
  1. Langston, Keith (13 August 2014). Scottish Steam: A Celebration. Wharncliffe. p. 172. ISBN 978-1-84563-163-5.
  2. Allen et al. (1971), p. 79.
  3. Allen et al. (1971), p. 80.
  4. Allen et al. (1971), pp. 79, 82–83.
  5. Allen et al. (1971), p. 81.
  6. Allen et al. (1971), pp. 82–83.
  • Allen, D. W.; Boddy, M. G.; Brown, W. A.; Fry, E. V.; Hennigan, W.; Manners, F.; Neve, E.; Proud, P.; Roundthwaite, T. E.; Tee, D. F.; Yeadon, W. B. (February 1971). Fry, E. V. (ed.). Locomotives of the L.N.E.R., part 8B: Tank Engines - Classes J71 to J94. Kenilworth: RCTS. ISBN 0-901115-06-1.
  • Casserley, H.C. & Johnston, Stuart W. (1974) [1966]. Locomotives at the Grouping 2: London & North Eastern Railway. Shepperton, Surrey: Ian Allan Limited. p. 68. ISBN 0-7110-0553-2.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.