. American engineer and railroad journal . ,\ iicii) iiF .\K(,h i;-\u iiui. ivs lirst bar and was equipped with a suitable arrangement forholding a pencil. This would record the exact motion of oneside frame with respect to the other. During the tests it was found that a loose truck would goout of square on a curve so that the flanges of one wheel wouldbe out of line with the nf the wlieol in front of it very. DETERMINING MOVEMENT OF SIPK FR.\MES. noticeably. A straight edge placed against the rim of one ofthe wheels in one test stood away 2]/^ in. from the rim
. American engineer and railroad journal . ,\ iicii) iiF .\K(,h i;-\u iiui. ivs lirst bar and was equipped with a suitable arrangement forholding a pencil. This would record the exact motion of oneside frame with respect to the other. During the tests it was found that a loose truck would goout of square on a curve so that the flanges of one wheel wouldbe out of line with the nf the wlieol in front of it very. DETERMINING MOVEMENT OF SIPK FR.\MES. noticeably. A straight edge placed against the rim of one ofthe wheels in one test stood away 2]/^ in. from the rim of thefollowing wheel. Some of the results obtained on the curved track from twoof the trucks running loose and rigid, as indicated in the lastcolumn, are given in Table I. Truck A was an experimental arcii bar truck, conformingclosely to standard practice in its design and construction. Ithad a specially constructed cast-steel bolster which, being con- May, 1911. AMERICAN ENGLNliEK AND RAILROAD JOURNAL 193 TABLE I. TostNo Truck WheelsFront Averftge Speed inFeet IVr Second Averuge Speed inMiles Per Hour Kinetic Energy i[)Foot-Pounds Lose inKinetic Energyon TotalForce onTrucl<on CurvePounds Uesistanccon Resistance on Curve Corrected to Level Track TotalMovementof SideFrameIncfies AtBeKinnii)]^of Curve At Endof Curve AtBeginningof Curve At Endof Curve AtBegfnningof Curve At Endof Curve 1 [I ni IV
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
