LSWR C8 class

{{Use dmy dates|date=June 2017}}

{{Use British English|date=June 2017}}

{{Infobox locomotive

|powertype=Steam

|name = LSWR C8 class

|image =

|caption =

|designer = Dugald Drummond

|builder = LSWR, at Nine Elms

|builddate = 1898

|totalproduction = 10

|whytetype = 4-4-0

|gauge = {{track gauge|ussg}}

|leadingdiameter = {{convert|3|ft|7|in|m|3|abbr=on}}

|driverdiameter = {{convert|6|ft|7|in|m|3|abbr=on}}

|length = 54 ft 11 in, later 56 ft {{frac|5|1|4}}in.

|locoweight = 46 tons 16 cwt

|fueltype = Coal

|fuelcap = 4 tons, later 5 tons

|watercap = 3,500 gallons, later 4,000 gallons.

|cylindercount = Two, inside

|cylindersize = {{convert|18+1/2|x|26|in|mm|0|abbr=on}}

|boilerpressure = {{convert|175|lbf/in2|MPa|2|abbr=on}}

|tractiveeffort = {{convert|16755|lbf|kN|2|abbr=on}}

|operator = London and South Western Railway
Southern Railway

|locale = Great Britain

|operatorclass =

|powerclass = LSWR/SR: I

|withdrawndate = 1933–38

|disposition = All scrapped

}}

The LSWR C8 class was the first class of 4-4-0 express steam locomotives designed by Dugald Drummond for the London and South Western Railway and introduced in 1898. According to Dendy Marshall{{cite book| last=Dendy Marshall| first=C.F. | title=History of the Southern Railway| page=175| publisher=Ian Allan| location=London| year=1963|isbn=071100059X}} they "were of orthodox design, very much like engines which Drummond had put on the Caledonian". Dendy Marshall gives few other details, except to say that they were numbered 290-299 and had 18 in x 26 in cylinders. H.C. Casserley states that they were very similar to the Caledonian Railway 66 class.{{cite book |last1=Casserley |first1=H.C. |title=London & South Western Locomotives |date=1971 |publisher=Allan |location=London |isbn=0-71100-151-0 |pages=114–116}}

They used a similar boiler to the Drummond M7 0-4-4T and 700 class 0-6-0 engines built for the LSWR. They originally used a similar tender to the 700 class, but these were later replaced with Drummond's eight-wheeled bogie "watercart" tenders. They were not particularly good steamers, due to their firebox being too small. None were ever superheated, and they were withdrawn after service lives of 35 to 40 years. In November 1898, No. 291 worked a train carrying the Grand Duke and Duchess Serge of Russia from Windsor through to Dover on the LCDR.