Railway and Locomotive Engineering . ractice, but hardlyaffords the same insight as to tlic type asin the case of the steam locomotives have not always beendesigned with due regard tn the ipiestionif stability of the rolling nmliiin of thewheels, and some run less sninnthly thanis desirable on this account. The tiltingof the rails and the coning of the wheelscause the progression by pure rolling to assume a sinuous nature, and on the sta-bility or instability of this motion de-pends whether the nosing effect tends todie down or to increase to the limits per-mitted by the wh
Railway and Locomotive Engineering . ractice, but hardlyaffords the same insight as to tlic type asin the case of the steam locomotives have not always beendesigned with due regard tn the ipiestionif stability of the rolling nmliiin of thewheels, and some run less sninnthly thanis desirable on this account. The tiltingof the rails and the coning of the wheelscause the progression by pure rolling to assume a sinuous nature, and on the sta-bility or instability of this motion de-pends whether the nosing effect tends todie down or to increase to the limits per-mitted by the wheel flanges. It can read-ily be shown that a locomotive carried ona rigid wheel base is in some circum-stances unstable, and may accordingly beexpected to develop a nosing tendency ifrun at high speed; the same is true wdienthe locomotive is divided into units eachcarried on a rigid wheel base; guidingwdieels elastically centered to align withthe main wheels tend, however, to stabil-ize the motion. There are few available records of. C.\ST STEEL TU.\( K. tractive-resistance tests on locumotivc-drawn electric trains, Init among the mostcomplete are those taken by the GeneralI^lectric Company in connection wifli theendurance test on the first New YorkCentral and Hudson River Railroad loco-motives. These were made on trains oftwo different types of passenger vehicle,and arc of importance in showing veryconclusively that, for a particular type ofcoach, tile additinnal tractive resistanceper ailditiiiual is a function of thespeed and is indejiendcnt of the numberof coaches, provided this is greater thantwo. The additional tractive resistanceper additional coach was found to be astraight line function of the spec<l withinthe limits of the tests. The effective loco-motive resistance when running with atrain was found to be smaller than llial i<ithe locomotive running alone. Electric-Driven Trolley Truck. A great saving liecn made in raibroad machine shops li
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyork, bookyear19
