File:The street railway review (1891) (14574897907).jpg

Identifier: streetrailwayrev15amer (find matches)
Title: The street railway review
Year: 1891 (1890s)
Authors: American Street Railway Association Street Railway Accountants' Association of America American Railway, Mechanical, and Electrical Association
Subjects: Street-railroads
Publisher: Chicago : Street Railway Review Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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tive in promoting wheel wear. In a round tripfrom Sullivan Sq. to Dudley St. via the Subway, slightly over 10miles, a train describes 9.43 complete circles, or an average ofone complete circumference every 5.600 ft. There are 18 curves of trailer truck, weighing about 3.5 tons. The essential measurementsof the cars are as follows: Length over drawbars 46 ft.io->^ in. Width over drip boards 8 g/i Width across platforms 8 7M Running rail to top of platform 3 8 Between truck centers ,u 3A Length inside car 37 6 Height of car above rail 12 5 Wheel base of trailer trucks 5 and 6 ft. Wheel base of motor trucks 6 ft. Distance between platforms at center 3/4 in. Percentage of weight on drivers 63.45 Seating capacity 48 Motor truck axle 654 in., 7^ in. wheel and gear fit. Motor truck journal 4!4 in. by 8 in. Trailer truck axle 5 in. M. C. B. Trailer truck journal 3^ in. by 7 in. Wheel diameter when new Motor 34 in., trailer 31 in.One hundred and fifty cars are equipped with the Sprague mul-
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FIG. 3.—SPRINGFIELD WHEEL GRINDING MACHINES. BOSTON ELEV.\TED RV. less than 100 ft. radius and 34 curves less than 150 ft. The shortestradius is 82 ft. Over this curve passes a daily traffic of 44,000 tons.The running rails and the third rail are each 85-lb. A. S. C. E.standard T sections. The steepest grade is 8 per cent, over whiclitrains are run downward only, and there are two up and two downgrades of 5 per cent at the entrances to the Subway. The rolling stock at present in use upon the division covers 174passenger cars, weighing about 29.5 tons each, light, and 36 tonsloaded, 3 flat cars, i wrecking car, i wrecking too! car and i roaddepartment construction car, making a total of 1,440 wheels. The passenger cars are mounted upon two trucks each, one trucktarrying th« niglprs and weighing about 5 tuns, the other being a tiple-unit automatic control, and 24 cars with the Sprague-GeneralElectric multiple-unit automatic relay control. The approximatemaximum speed is 40 m. p. h.,

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