. The Street railway journal . curvature. On this basis the maximum average energy consump-tion for the express service has been found to be, as shownby the chart, 130 watt-hours per ton mile; that for thelocal service to be about 150 watt-hours per ton results are what have been arrived at from theenergy curves which have been thus far prepared. It is ap-parent, however, that this average would be very materially December 7, 1901.] STREET RAILWAY JOURNAL. 833 reduced by altering the respective amounts of accelerationand of coasting and braking, which matter is now beingdone. These
. The Street railway journal . curvature. On this basis the maximum average energy consump-tion for the express service has been found to be, as shownby the chart, 130 watt-hours per ton mile; that for thelocal service to be about 150 watt-hours per ton results are what have been arrived at from theenergy curves which have been thus far prepared. It is ap-parent, however, that this average would be very materially December 7, 1901.] STREET RAILWAY JOURNAL. 833 reduced by altering the respective amounts of accelerationand of coasting and braking, which matter is now beingdone. These clianges will reduce the watt-hours per ton-mile required, but will not affect the size of the motor re-quired, as the same acceleration will be needed. They tenance, and estimated earnings of the New York & Port-chester Railroad Company, which details are taken fromhis report to the New York & Portchester Railroad Com-pany. Further details of the operating costs and estimatedearnings will be given in another FIG. 7—COMPARATIVE GRAPHICAL REPRESENTATION OF PERFORMANCE OF 300 AMPERE MOTOR EQUIPMENT were drawn primarily to determine the size of the motor,the possible running time and the approximate size of thepower house. Subsequent changes will be purely for thepurpose of effecting the economy in the amount of energyrequired per run. William C. Gotshall, president and chief engineer of thecompany, presented the following details of the costs ofconstruction and operation, including repairs and main- FINANCIAL SUMMARY COST OF CONSTRUCTION. Construction and equipment $7,200,516 Right of way, real estate, terminals, etc 1,600,000 Interest during construction 300,000 Engineering 250,000 Contingencies 500,000 $9,850,516 834 STREET RAILWAY JOURNAL. [Vol. XVIII. No. 23. COST OF OPERATION. Maintenance of way and .$0,020 per car mile equipment .020 Cost of .058 Conducting transportation 040 Officers and general .015 $0153 per
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