G&SWR 128 Class

{{Short description|Class of 2 British 4-6-0 locomotives}} {{Use dmy dates|date=March 2018}} {{Use British English|date=March 2018}} {{more citations needed|date=December 2016}} {{Infobox locomotive |name = G&SWR 128 Class |powertype = Steam |image = G&SWR 128 Class No. 128.jpg |caption = |designer = [[James Manson (engineer)|James Manson]] |builder = [[North British Locomotive Co.]] |serialnumber = 19504–19505 |builddate = 1911 |totalproduction = 2 |gauge = {{track gauge|ussg}} |whytetype = [[4-6-0]] |uicclass = 2′C h2 |leadingdiameter = {{convert|3|ft|8|in|mm|0|abbr=on}} |driverdiameter = {{convert|6|ft|6|in|mm|0|abbr=on}} |wheelbase = {{convert|27|ft|7|in|m|2|abbr=on}} |length = |height = {{convert|12|ft|11+1/2|in|m|3|abbr=on}} |frametype = |locoweight = {{long ton|69|2}} |fueltype = [[Coal]] |fuelcap = |watercap = {{convert|4100|impgal|abbr=on}} |boilerpressure = {{convert|160|psi|kPa|-1|abbr=on}} |totalsurface = {{convert|1560|sqft|m2|abbr=on}} |superheatertype = Schmidt |superheaterarea = {{convert|445|sqft|m2|abbr=on}} |cylindercount = Two |cylindersize = {{convert|21|x|26|in|mm|0|abbr=on}} |valvegear = [[Stephenson valve gear|Stephenson]] |tractiveeffort = {{convert|19992|lbf|kN|2|abbr=on}} |operator = [[G&SWR]] » [[London, Midland and Scottish Railway|LMS]] |operatorclass = G&SWR: 128 |powerclass = LMS: 3P |fleetnumbers = G&SWR: 128, 129;<br/>(from 1919): 512, 513;<br/>LMS: 14673, 14674 |retiredate = 1933–1934 |disposition = Both scrapped }}

The [[Glasgow and South Western Railway]] (G&SWR) '''128 class''' was a class of two [[4-6-0]] steam locomotives designed by [[James Manson (engineer)|James Manson]] as a development of his [[G&SWR 381 Class|381 Class]] 4-6-0s, and were his final locomotive design before he retired. They were built in 1911 by the [[North British Locomotive Company]] at its Queens Park works and were considered both good looking and excellent performers.<ref name="RM">{{cite magazine | last = Stewart | first = W.D. | authorlink = | title = Manson's 128 class 4-6-0 |magazine= Railway Modeller | volume = 22 | issue = 245 |page=91 | publisher = Peco publications & publicity Ltd | location = Beer | date = March 1971 | url = }} </ref>

==Numbering==

===G&SWR=== Originally numbered 128 and 129, they became 512 and 513 in the G&SWR renumbering of 1919.

===LMS=== After the 1923 [[Railways Act 1921|grouping]] they became [[London, Midland and Scottish Railway|LMS]] numbers 14673 and 14674, but were scrapped in 1933 and 1934 under the LMS drive for standardisation.

==Features== The 128 class, along with the 381 class, were the only G&SWR locomotives to use the 4-6-0 wheel arrangement, and were also the only G&SWR locos to have [[Belpaire firebox]]es. As originally built, No.129 had a Weir [[feedwater heater]] mounted on top of the boiler between the chimney and the dome, but this was removed in 1919. The same locomotive operated for a period as a [[4-4-2 (locomotive)|4-4-2]] after it broke a trailing rod.<ref name="RM" />

==References== {{Reflist}} *{{0-7110-0554-0|page=149}} *{{Baxter: British Locomotive Catalogue 1825–1923|p=162|volume=4}}

{{DEFAULTSORT:GandSWR 128 Class}} [[Category:4-6-0 locomotives]] [[Category:2′C h2 locomotives]] [[Category:Glasgow and South Western Railway locomotives|128]] [[Category:NBL locomotives]] [[Category:Railway locomotives introduced in 1911]] [[Category:Standard-gauge steam locomotives of Great Britain]] [[Category:Scrapped locomotives]]