GWR 655 Class

{{Use dmy dates|date=January 2018}}

{{Use British English|date=January 2018}}

{{one source|date=December 2014}}

{{Infobox locomotive

| name = GWR 655 Class

| image = Old GWR 0-6-0PT of 655 class dumped outside Swindon Works, 1947 (geograph 4567852).jpg

| alt =

| caption = 2701 outside Swindon Works, 1947

| powertype = Steam

| designer = George Armstrong

| builder = Wolverhampton, GWR{{sfn|le Fleming|1958|p=E40}}

| ordernumber = Lots: A3, B3, E3{{sfn|le Fleming|1958|p=E40}}

| serialnumber = Works Nos: 563–74, 575–94, 605–24{{sfn|le Fleming|1958|p=E40}}

| buildmodel =

| builddate = {{Start date|1892}}–97{{sfn|le Fleming|1958|p=E40}}

| totalproduction = 52{{sfn|le Fleming|1958|p=E40}}

| rebuilder =

| rebuilddate =

| numberrebuilt =

| whytetype = {{whyte|0-6-0|ST}}{{sfn|le Fleming|1958|p=E40}}

| uicclass =

| gauge = {{track gauge|uksg|allk=on}}

| driverdiameter = {{convert|4|ft|6|in|m|3|abbr=on}}{{sfn|le Fleming|1958|p=E41}}

| wheelbase = {{convert|7|ft|3|in|m|2|abbr=on}} + {{convert|8|ft|4|in|m|2|abbr=on}}, total {{convert|15|ft|6|in|m|2|abbr=on}}{{sfn|le Fleming|1958|p=E41}}

| length =

| width =

| height =

| frametype = {{plainlist|

• Type: Inside
• Length: {{convert|26|ft|6|in|m|2|abbr=on}}{{sfn|le Fleming|1958|p=E5}}

}}

| axleload = {{plainlist|

• (1741) {{long ton|13|18}}
  {{convert|13|LT|18|Lcwt|t ST|1|abbr=on|disp=output only}} full{{sfn|le Fleming|1958|p=E41}}
• (2701) {{long ton|14|6}}
  {{convert|14|LT|6|Lcwt|t ST|1|abbr=on|disp=output only}} full{{sfn|le Fleming|1958|p=E41}}

}}

| weightondrivers =

| locoweight = {{plainlist|

• (1741) {{long ton|41|4}}
  {{convert|41|LT|4|Lcwt|t ST|1|abbr=on|disp=output only}} full{{sfn|le Fleming|1958|p=E41}}
• (2701) {{long ton|42|5}}
  {{convert|42|LT|5|Lcwt|t ST|1|abbr=on|disp=output only}} full{{sfn|le Fleming|1958|p=E41}}

}}

| tenderweight =

| locotenderweight =

| tendertype =

| fueltype = Coal

| fuelcap =

| watercap = {{convert|1000|impgal|abbr=on}}{{sfn|le Fleming|1958|p=E41}}

| tendercap =

| sandcap =

| boiler = {{plainlist|

• Barrel: {{Convert|10|ft|6|in|2|abbr=on}}
• Outside diameter: {{Convert|4|ft|2|in|3|abbr=on}}
• Pitch: {{Convert|6|ft|4+3/4|in|3|abbr=on}}{{sfn|le Fleming|1958|p=E41}}

}}

| boilerpressure = {{convert|140|lbf/in2|MPa|2|abbr=on}}{{sfn|le Fleming|1958|p=E41}}

| feedwaterheater =

| firearea = {{convert|15.16|sqft|m2|abbr=on}}{{sfn|le Fleming|1958|p=E41}}

| tubearea = {{convert|1125|sqft|m2|abbr=on}}{{sfn|le Fleming|1958|p=E41}}

| fluearea =

| tubesandflues =

| fireboxarea = {{convert|103|sqft|m2|abbr=on}}{{sfn|le Fleming|1958|p=E41}}

| totalsurface = {{convert|1228|sqft|m2|abbr=on}}{{sfn|le Fleming|1958|p=E41}}

| superheatertype =

| superheaterarea =

| cylindercount = Two, inside

| cylindersize = {{plainlist|

• Diameter: {{convert|17|in|mm|0|abbr=on}}
• Stroke: {{convert|24|in|mm|0|abbr=on}}{{sfn|le Fleming|1958|p=E41}}

}}

| frontcylindersize=

| rearcylindersize =

| hpcylindersize =

| lpcylindersize =

| valvegear =

| valvetype =

| valvetravel =

| valvelap =

| valvelead =

| transmission =

| maxspeed =

| poweroutput =

| tractiveeffort = {{convert|15285|lbf|kN|2|abbr=on}}{{sfn|le Fleming|1958|p=E41}}

| factorofadhesion =

| trainheating =

| locobrakes = Steam{{efn|Steam brakes with cast iron blocks became standard in the 1870s.{{sfn|le Fleming|1958|p=E11}}}}

| locobrakeforce =

| trainbrakes =

| safety =

| operator = GWR

| operatorclass = GWR 655

| powerclass =

| numinclass =

| fleetnumbers = 655, 767, 1741–50, 1771–90, 2701–20{{sfn|le Fleming|1958|p=E40}}

| officialname =

| nicknames =

| axleloadclass =

| locale = Primarily GWR Northern division{{sfn|le Fleming|1958|p=E42}}

| deliverydate =

| firstrundate =

| lastrundate =

| retiredate =

| withdrawndate = {{Start date|1928}}–50{{sfn|le Fleming|1958|pp=E42-E50}}

| preservedunits =

| restoredate =

| scrapdate =

| currentowner =

| disposition =

| notes =

}}

Class 655 of the Great Western Railway was a class of 52 {{whyte|0-6-0|ST}} locomotives designed by George Armstrong and built at the GWR's Wolverhampton Works.