Identifier: electricrailway341909newy (find matches)
Title: Electric railway journal
Year: 1908 (1900s)
Authors:
Subjects: Electric railroads
Publisher: (New York) McGraw Hill Pub. Co
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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le stretch is practicallylevel. The direction of running is re-versed from time to time to prevent un-even wear of the guard rails and tires,and plaster casts of both are made atfrequent intervals to study the characterof wear. The roadbed consists partly of wood-en ties and partly of steel ties, both laidwith varying spacings and in different kinds of rock bal-last. Instead of placing two ties close together under thejoints, the steel tie sections have been fitted with a doubleor Siamese tie under every joint. No detailed data haveyet been given out on the results of the roadbed trials, butin general the object is to determine how much each type other, which was installed during the past year, has a thirdwire to equalize the effects of expansion and contraction inthe rest of the system. Both overhead systems are in-stalled for 6000-volt, single-phase current, and have provedsatisfactory in every detail. Power for the operation ofthis line is transmitted from Oranienburg, 2.5 km (1.55
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From Oranuenburq Oranienburg Test Line—Single-Phase Locomotive Now in Service miles) distant, to a small control building near the testtrack. The first experiments on the line were started early in1906, with one of the original Spindlersfeld single-phasemotor cars, and were continued for nearly two years. Thetrials are now being conducted with a locomotive and a train of freight cars,the whole constitutinga weight of 350 to 380metric tons. At firstthe total train weightwas only 250 metrictons, pulled by two mo-tors, but now three 250-hp motors are used.The average powerconsumption, includingacceleration, is 17 watt-hours per metric ton-kin (30 kw-hours perton-mile). The locomo-tive and cars are runfor about 20 hours aday, except for shortstops to make roadwayrepairs, etc. There is no attend-ant on the train, as themotorman jumps off assoon as he acceleratesthe motors, and the

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