File:The Street railway journal (1902) (14758083041).jpg

Identifier: streetrailwayjo201902newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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the Shore Line between Mt. Clemens andDetroit,where interurban traffic is the heaviest, there are twoNo. 00 trolleys and three No. 0000 running each direction,as indicated on the map. Before the Port Huron and city lines were operated fromthe New Baltimore power house a good opportunity was October 4, 1902.j STREET RAILWAY JOURNAL. 481 afforded for determining the power required per ear milefor internrban cars of the kind used on the Rapid Railway.Most of the cars on the Rapid Railway are geared for amaximum speed of about 45 miles per hour, some of thembeing four-motor equipments, and some two-motor. Thefour-motor equipments usually reach maximum speed The output for a run of twenty hours was about 14,000kw-hours, or an average of 700 kw. This represents anaverage input of 33.3 kw per car in service. Of course,fur the inttrurban passenger cars which are in motion agreater part of the time the input per car would be consid-erably more than this, as the above list includes the freight
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PASSENGER CAR,sooner than the two-motor equipments, although when upto speed they run about the same. It was found that thepower required per car-mile for the interurban cars asmeasured at the low-tension bus-bars at the power house,and which includes, therefore, the losses in step-up andstep-down transformers, high-tension lines, rotary convert-ers and direct-current feeders, was about 3 kw-hours Asto the maximum load coming upon the power house when RAPID RAILWAY cars, line construction cars and two light cit\ cars. In-deed, the power required by the city cars is probably in theneighborhood of .15 kw average, or less than one-half thatof an interurban car. With the above list of cars in oper-ation, the maximum evening load, when nearly all the carswould be moving, was about 1384 kw, a maximum of 65.9kw per car. Several types of passenger cars are operated by this com-

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