It is suggested the design might have arisen as an attempt to emulate the success of the LB&SCR I3 class, however on introduction engine No. 20 seemed to have issues with high axle loading restricting the route and it also appeared to have difficulties with heavier trains, steep gradients and hot axleboxes. The relatively large driver wheel diameter of 6 feet 1 inch (1,850 mm) may not have helped especially as it ended up being used on suburban services, only averaging a mere 90 miles (140 km) a day. It may have been hoped the Belpaire boilers, increased weight and other changes on those ordered from Beyer, Peacock & Company in 1924 may have helped.[2]
Upon merger of the DSER with the Great Southern Railways in 1925, they were allocated the numbers 455 though 457 and Inchicore class C2. Rebuilds in the 1930s seem to have resolved most of the issues and a 1948 CIÉ report commented: "DSER heavy passenger engines. (When) (sic.) well maintained not all that bad. Essential to local service".[2]
dser, class, class, three, locomotives, operated, dublin, south, eastern, railway, later, great, southern, railways, ciÉ, 35457, former, dser, braytype, originpower, typesteamdesignercroninbuildergrand, canal, streetbeyer, peacock, companybuild, date1911, 1924. The DSER 20 class was a class of three 4 4 2T locomotives operated by the Dublin and South Eastern Railway and later the Great Southern Railways and CIE DSER 20 34 amp 35457 former DSER 35 at BrayType and originPower typeSteamDesignerCroninBuilderGrand Canal StreetBeyer Peacock amp CompanyBuild date1911 amp 1924Total produced3RebuilderInchicore railway worksRebuild date1932 1951SpecificationsConfiguration Whyte4 4 2TGauge5 ft 3 in 1 600 mm Leading dia 3 ft 3 in 990 mm Driver dia 6 ft 1 in 1 850 mm Trailing dia 3 ft 39 in 1 900 mm Axle load15 75 long tons 16 00 t Loco weight61 5 long tons 62 5 t Water cap 1 700 imp gal 7 700 L 2 000 US gal Boiler pressure160 lbf in2 1 10 MPa Cylinders2Cylinder size18 in 26 in 457 mm 660 mm 1 Performance figuresTractive effort15 920 lbf 70 82 kN CareerOperatorsDublin and South Eastern RailwayGreat Southern RailwaysCIE Railways DivisionClassC2 Inchicore Power classK HTNumber in class3Numbers20 34 35455 457LocaleIrelandWithdrawn1955 1959DispositionAll scrappedNo 20 as built 2 History editDesigned by Cronin for the Dublin and South Eastern Railway they were intended for express passenger work No 20 King George was the last locomotive to be built at Grand Canal Street railway works 3 though the boiler was made by Kitson amp Company 2 The remaining locomotives numbered 34 and 35 were built by Beyer Peacock amp Company in 1924 2 It is suggested the design might have arisen as an attempt to emulate the success of the LB amp SCR I3 class however on introduction engine No 20 seemed to have issues with high axle loading restricting the route and it also appeared to have difficulties with heavier trains steep gradients and hot axleboxes The relatively large driver wheel diameter of 6 feet 1 inch 1 850 mm may not have helped especially as it ended up being used on suburban services only averaging a mere 90 miles 140 km a day It may have been hoped the Belpaire boilers increased weight and other changes on those ordered from Beyer Peacock amp Company in 1924 may have helped 2 Upon merger of the DSER with the Great Southern Railways in 1925 they were allocated the numbers 455 though 457 and Inchicore class C2 Rebuilds in the 1930s seem to have resolved most of the issues and a 1948 CIE report commented DSER heavy passenger engines When sic well maintained not all that bad Essential to local service 2 References edit Boocock Colin 1 October 2009 Locomotive Compendium Ireland 1st ed Ian Allan Publishing pp 37 41 ISBN 9780711033603 a b c d e Clements Jeremy McMahon Michael 2008 Locomotives of the GSR Colourpoint Books pp 146 150 ISBN 9781906578268 Baker Michael H C 1972 Irish Railways since 1916 Ian Allan Publishing p 47 ISBN 0711002827 Retrieved from https en wikipedia org w index php title DSER 20 amp oldid 1212429822, wikipedia, wiki, book, books, library,
