. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . or to any other valvemotion in use, all parts liable to developdefects being in plain view and easilyexamined from the outside. As the Walschaerts valve gear hasbeen in service in this country a shorttime only, opinions regarding it are dif-ficult to get; therefore, the chairman ofthe committee gives his personal obser-vation and experience. The cost of the Walschaerts are com-pared to the Stephenson is believed to ped with the Stephenson make bettertime on the level or on favo
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . or to any other valvemotion in use, all parts liable to developdefects being in plain view and easilyexamined from the outside. As the Walschaerts valve gear hasbeen in service in this country a shorttime only, opinions regarding it are dif-ficult to get; therefore, the chairman ofthe committee gives his personal obser-vation and experience. The cost of the Walschaerts are com-pared to the Stephenson is believed to ped with the Stephenson make bettertime on the level or on favorable grades;but where the grade is against them, en-gines with the Walschaerts gear makesthe best time, each handling the sametonnage. The valves on these engineshaving the Stephenson gear have A ofan inch lead at full stroke, with i With the Walschaerts valve mo-tion several of the engines have % ofan inch constant lead and ^ in. lap; theothers, A in. lead and 15/16 in. lap. Inthe discussion following the reading ofthe paper these additional points werepresented. Reports from a number of. INTERIOR OF C.\B OF B.\LD\VI\ M.\LLET ARTICUL.\TED LOCOMOTIVE SHOWING REVERSING MECHANISM. be 25 per cent, in favor of the first men-tioned; engine failures due to valve gear.^3 per cent. less. The W^alschaerts linkhas less rocking movement than theother, giving a more favorable actionon the link block, with less tendencyto spring the gear at and near the ex-tremity of its stroke and the up anddown motion of the link noticeable withthe Stephenson motion is dispensedwith. Regarding the advantages of one gearover the other for speed, the paper isnon-committal, though the consensus ofopinion of engineers handling the twotypes of gear on engines otherwise alike,all in freight service, is that those equip- roads indicated that engines with theWalschaerts gear were giving satisfac-torj service; valves were less liable toget out of square, less valve leakage,and no marked difference in coal
Size: 1508px × 1657px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
