View source for SECR Q1 class

{{distinguish|SR Q1 class}}
{{Use dmy dates|date=March 2017}}
{{Use British English|date=March 2017}}
{{Infobox locomotive
|name            = SECR Q1 class
|powertype       = Steam
|image           =
|caption         =
|designer        = [[Harry Wainwright]]
|builder         =
|serialnumber    =
|builddate       = 
|totalproduction = 
|rebuilder       = 
|rebuilddate     = 1903–1917
|numberrebuilt   = 55
|whytetype       = [[0-4-4T]]
|uicclass        = B2′ n2t
|gauge           = {{RailGauge|ussg}}
|driverdiameter  = {{convert|5|ft|6|in|m|3|abbr=on}}
|trailingdiameter= 
|length          =
|height          =
|axleload        =
|weightondrivers =
|locoweight      = {{convert|49.6|LT|1}}
|fueltype        = Coal
|fuelcap         =
|watercap        =
|boilerpressure  = {{convert|150|lbf/in2|MPa|2|abbr=on}}
|cylindercount   = Two, inside
|cylindersize    = {{convert|18|x|26|in|mm|0|abbr=on}}
|valvegear       = [[Stephenson valve gear]]
|tractiveeffort  = {{convert|16274|lbf|kN|2|abbr=on}}
|operator        = {{ubl|[[South Eastern and Chatham Railway]]|→ [[Southern Railway (Great Britain)|Southern Railway]]}}
|operatorclass   = Q1
|powerclass      = 
|nicknames       =
|withdrawndate   = 1909–1930
|numinclass      = ''1 January 1923:'' 47
|disposition     = All scrapped
}}

The '''SECR Q1 class''' was a class of [[0-4-4T]] [[steam locomotive]]s of the [[South Eastern and Chatham Railway]]. The class was rebuilt from older [[James Stirling (1835–1917)|Stirling]] [[SER Q class|Q class]] locomotives by [[Harry Wainwright]] between 1903 and 1917 by fitting the boiler that had been designed for the [[SECR H class|H class]] 0-4-4T in 1902–03.<ref>Casserley, H.C. and Johnston, S.W., ''Locomotives at the Grouping 1, Southern Railway'', page 42, [[Ian Allan Publishing|Ian Allan]], 1974, {{ISBN|0-7110-0552-4}}</ref><ref>{{cite book |last=Bradley |first=D.L. |title=The Locomotive History of the South Eastern Railway |edition=2nd |date=September 1985 |orig-year=1963 |publisher=[[Railway Correspondence and Travel Society|RCTS]] |location=London |isbn=0-901115-48-7 |oclc=642415860 |page=165 }}</ref>

==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 No. 324 was renumbered 324A in 1907; this and seven others were withdrawn between 1909 and 1914 (the boilers from these being used to rebuild further Q class locomotives to Q1) leaving 47 to enter [[Southern Railway (Great Britain)|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.{{sfn|Bradley|1985|pp=165, 166, 168, 169–171}}

{|class="wikitable mw-collapsible"
|+Rebuilding and withdrawal
|-
!Year ||{{abbr|Qty|Quantity}} rebuilt ||Numbers ||{{abbr|Qty|Quantity}} withdrawn ||Numbers ||Total in service at end of year
|-
|1903 ||4 ||180, 184, 319, 362 || || ||4
|-
|1904 || || || || ||4
|-
|1905 ||5 ||81, 134, 181, 303, 407 || || ||9
|-
|1906 ||5 ||138, 146, 304, 324, 366 || || ||14
|-
|1907 ||2 ||83, 350 || || ||16
|-
|1908 ||1 ||361 || || ||17
|-
|1909 ||2 ||355, 359 ||2 ||319, 324A ||17
|-
|1910 ||4 ||351, 400, 404, 408 ||1 ||303 ||20
|-
|1911 || || ||1 ||181 ||19
|-
|1912 ||11 ||12, 85, 95, 141, 200, 343, 357, 367, 406, 412, 413 ||2 ||180, 304 ||28
|-
|1913 ||7 ||115, 168, 344, 364, 365, 403, 416 || || ||35
|-
|1914 ||9 ||50, 58, 76, 224, 347, 348, 363, 402, 420 ||2 ||184, 407 ||42
|-
|1915 ||3 ||354, 419, 423 || || ||45
|-
|1916 ||1 ||411 || || ||46
|-
|1917 ||1 ||415 || || ||47
|-
|1918–24 || || || || ||47
|-
|1925 || || ||3 ||A224, A348, 354 ||44
|-
|1926 || || ||20 ||A50, A58, A95, 134, 141, A168, A343, 344, A350, A357, A359, A363, 366, A402, A403, 413, A415, A416, 419, A423 ||24
|-
|1927 || || ||9 ||A12, A76, A85, A138, A347, A351, A355, A404, A420 ||15
|-
|1928 || || ||8 ||A81, A83, A115, A146, A200, A365, A406, A411 ||7
|-
|1929 || || ||5 ||A361, A362, A400, A408, A412 ||2
|-
|1930 || || ||2 ||A364, A367 ||0
|}

==References==
<references/>

{{SECR locomotives}}

[[Category:South Eastern and Chatham Railway locomotives|Q1]]
[[Category:0-4-4T locomotives]]
[[Category:Railway locomotives introduced in 1903]]
[[Category:Scrapped locomotives]]

{{England-steam-loco-stub}}