. Railway mechanical engineer . and machinerj of aConsolidation locomotive to the tender, while the drawingsshow the application of the Mogul type engine to the either case the details are substantially the same. With the application of the Consolidation running gear to 121 )22 RAILWAY MECHANICAL ENGINEER Vol. 91, No. 3 the U-iidtT the dniw-hur pull of the Duplex locomotives isJ9 per cent greater than that of the original Mikados. Thelocomotive is operated at 175 \h. boiler pressure, which, with27-in. by 30-in. cylinders and 6.;-in. drivers in the originalMikados, gives a tractive ef
. Railway mechanical engineer . and machinerj of aConsolidation locomotive to the tender, while the drawingsshow the application of the Mogul type engine to the either case the details are substantially the same. With the application of the Consolidation running gear to 121 )22 RAILWAY MECHANICAL ENGINEER Vol. 91, No. 3 the U-iidtT the dniw-hur pull of the Duplex locomotives isJ9 per cent greater than that of the original Mikados. Thelocomotive is operated at 175 \h. boiler pressure, which, with27-in. by 30-in. cylinders and 6.;-in. drivers in the originalMikados, gives a tractive effort of 51,600 lb. By reducingthe diameter of the cylinder to 26 in. the tractive effort of over the first 22 miles of this line is 1,100 tons. The will handle 1,400 tons, or an increase of 27 percent. On this part of the line there is a per cent gradefor 5 miles, with many reverse curves. For the remaining distance, 46 miles, there is one shortgrade of per cent with reverse curves and a slow approach. Arrangement of the Reversing Gear for the Tender Engine the Mikado locomotive was reduced to 47,900 lb. The trac-tive effort of the tender unit in case of the Consolidationlocomotive, with 20-in. by 24-in. cylinders, and 50-in. driv-ing wheels is 28,600 lb., making a total of 76,500 lb. Testshave shown that the draw-bar pull available from the com-bination is 64,000 lb., as compared with 46,000 lb. for thesingle Mikado, or an increase of 39 per cent. It has been which, with other grades of the same percentage but with lesscurvature, limits the capacity of the single Mikados to1,150 tons. The Duplex locomotives will handle 1,600tons, or an increase of 39 per cent. The average for thewhole eastbound trip is 77,100 ton-miles for the singleMikado locomotives and 104,400 ton-miles for the Duplexlocomotives, or an increase of 36 per cent. In handling this
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
