SER Q class

The SER Q class was a class of 0-4-4T steam locomotives of the South Eastern Railway. The class was designed by James Stirling and introduced in 1881.[1] These locomotives should not be confused with the later SR Q class 0-6-0.

SER Q class
Type and origin
Power typeSteam
DesignerJames Stirling
Build date1881–1897
Total produced118
Specifications
Configuration:
  Whyte0-4-4T
  UICB2′ n2
Gauge4 ft 8 12 in (1,435 mm)
Driver dia.5 ft 6 in (1.676 m)
Trailing dia.3 ft 0 in (0.914 m)
Wheelbase22 ft (7 m)
Axle load16 long tons (16.3 t)
Loco weight48.65 long tons (49.4 t)
Fuel typeCoal
Fuel capacity0.15 long tons (0.2 t)
Water cap1,050 imp gal (4,800 L; 1,260 US gal)
Firebox:
  Firegrate area
16 sq ft (1 m2)
Boiler pressure140 lbf/in2 (0.97 MPa)
Heating surface:
  Tubes and flues
922.5 sq ft (85.70 m2)
CylindersTwo, inside
Cylinder size18 in × 26 in (457 mm × 660 mm)
Valve gearStephenson
Performance figures
Tractive effort15,189 lbf (67.56 kN)
Career
Operators
ClassQ
Number in class1 January 1923: 32
Withdrawn1907–1929
DispositionAll scrapped

Rebuilding

The locomotives passed to the South Eastern and Chatham Railway in 1899 and 55 were rebuilt by Harry Wainwright to class Q1 between 1903 and 1919.

Numbering

Thirty-two unrebuilt locomotives survived into Southern Railway ownership on 1 January 1923 with random numbers between 6 and 424. All had been withdrawn by 1929.

Table of withdrawals
YearQuantity in
service at
start of year
Quantity
withdrawn
Locomotive numbersNotes
1925321A346
19263115A40, A72, A73, A82, A135, A220, A237, A345, A352, A358, A360,
A405, A417, A418, A422
19271611A6, A26, A136, A169, A235, A356, A399, A410, A414, A421, A424
192853A23, A173, A401
192922A349, A368

References

Bibliography

  • Ahrons, E.L. (1926). The British Steam Railway Locomotive. Ian Allan.
  • Casserley, H.C.; Johnston, S.W. (1974). Locomotives at the Grouping 1, Southern Railway. Ian Allan. ISBN 0-7110-0552-4.CS1 maint: ref=harv (link)


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