SECR Q1 class

The SECR Q1 class was a class of 0-4-4T steam locomotives of the South Eastern and Chatham Railway. The class was rebuilt from older Stirling Q class locomotives by Harry Wainwright between 1903 and 1917 by fitting the boiler that had been designed for the H class 0-4-4T in 1902–03.[1][2]

Not to be confused with SR Q1 class.

SECR Q1 class
Type and origin
Power typeSteam
DesignerHarry Wainwright
Rebuild date1903–1917
Number rebuilt55
Specifications
Configuration:
​
 • Whyte0-4-4T
 • UICB2′ n2t
Gauge4 ft 8+1⁄2 in (1,435 mm)
Driver dia.5 ft 6 in (1.676 m)
Loco weight49.6 long tons (50.4 t)
Fuel typeCoal
Boiler pressure150 lbf/in2 (1.03 MPa)
CylindersTwo, inside
Cylinder size18 in × 26 in (457 mm × 660 mm)
Valve gearStephenson valve gear
Performance figures
Tractive effort16,274 lbf (72.39 kN)
Career
Operators
ClassQ1
Number in class1 January 1923: 47
Withdrawn1909–1930
DispositionAll scrapped

Numbering

Fifty-five locomotives were rebuilt at Ashford works, retaining their previous numbers which were scattered between 12 and 423. No. 324 was renumbered 324A in 1907; this and seven others were withdrawn between 1909 and 1914 (the boilers from these being used to rebuild further Q class locomotives to Q1) leaving 47 to enter Southern Railway ownership on 1 January 1923; between 1923 and 1926 all except seven (nos. 134, 141, 344, 354, 366, 413, 419) were repainted into SR green livery and their numbers were prefixed with the letter A to denote Ashford works. Withdrawal recommenced in 1925, and all had been withdrawn by the end of 1930.[3]

Rebuilding and withdrawal
YearQty rebuiltNumbersQty withdrawnNumbersTotal in service at end of year
19034180, 184, 319, 3624
19044
1905581, 134, 181, 303, 4079
19065138, 146, 304, 324, 36614
1907283, 35016
1908136117
19092355, 3592319, 324A17
19104351, 400, 404, 408130320
1911118119
19121112, 85, 95, 141, 200, 343, 357, 367, 406, 412, 4132180, 30428
19137115, 168, 344, 364, 365, 403, 41635
1914950, 58, 76, 224, 347, 348, 363, 402, 4202184, 40742
19153354, 419, 42345
1916141146
1917141547
1918–2447
19253A224, A348, 35444
192620A50, A58, A95, 134, 141, A168, A343, 344, A350, A357, A359, A363, 366, A402, A403, 413, A415, A416, 419, A42324
19279A12, A76, A85, A138, A347, A351, A355, A404, A42015
19288A81, A83, A115, A146, A200, A365, A406, A4117
19295A361, A362, A400, A408, A4122
19302A364, A3670

References
  1. Casserley, H.C. and Johnston, S.W., Locomotives at the Grouping 1, Southern Railway, page 42, Ian Allan, 1974, ISBN 0-7110-0552-4
  2. Bradley, D.L. (September 1985) [1963]. The Locomotive History of the South Eastern Railway (2nd ed.). London: RCTS. p. 165. ISBN 0-901115-48-7. OCLC 642415860.
  3. Bradley 1985, pp. 165, 166, 168, 169–171.
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