. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . dered inconnection with the work done by theseengines on continuous grades averaging48 ft. per mile. If their performance isexamined on the basis of the resistanceencountered for speeds on Americanroads, we will have lbs. per tondue to speed, and this with lbs. perton due to grade, makes 30 lbs. per data is at hand for curves, and thetotal resistance will be taken as above,on the grade of I in 102, or per cent.,where the speed at this point was 35miles an hour and could
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . dered inconnection with the work done by theseengines on continuous grades averaging48 ft. per mile. If their performance isexamined on the basis of the resistanceencountered for speeds on Americanroads, we will have lbs. per tondue to speed, and this with lbs. perton due to grade, makes 30 lbs. per data is at hand for curves, and thetotal resistance will be taken as above,on the grade of I in 102, or per cent.,where the speed at this point was 35miles an hour and could not be influ-enced by kinetic energy, being a deadpull for a distance of about 15 miles. Thework done is exciting more than passingcomment, since the weight of engine andtender in working order is 144 tons, andthat of the train load, estimated from re-liable data, about 436 tons, or a total load our description of this engine in Junelast, the total heating surface was givenat 2,400 square feet; the evaporation perhour per unit of heating surface was in this case, therefore,^^^* = lbs. of2,400. SECTION OFBOILER. MCINTOSH water. Such an evaporation would notbe expected from so small a heating sur-face in this country, as is evidenced by and being directly comparable with theCaledonian engines, the latter stand outin strong contrast in the matter of heat-ing surface, to an extent as to be con-vincing that our design of boilers is notconducive to the highest evaporativeefliciency. The conviction is forced thata remedy is to be found only in an im-proved circulation, and to attain tliatdesirable end, it would appear that am-ple water spaces around flues must beprovided not only between flues, but alsobetween boiler shell and flues at sidesand bottom. Mr. Mcintosh has demonstrated thathis new engines will steam economicallyon a lower heating surface than ourengines, for the same work and of thesame caliber. The Pennsylvania classE 3 engine approaches the nearest toth
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
