Identifier: railwaylocomotiv32newy (find matches)
Title: Railway and locomotive engineering : a practical journal of railway motive power and rolling stock
Year: 1901 (1900s)
Authors:
Subjects: Railroads Locomotives
Publisher: New York : A. Sinclair Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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able, but the disadvantagewas thought to be more than ofTset bythe high center of gravity thereby attained..•\s far as riding qualities were con-cerned, the engine more than came up toexpectations. At speeds of from 60 to 70miles per hour on a straight track theyran with remarkable smoothness andwithout manifesting the slightest tendencyto nose that was so characteristic ofother electric locomotives having a lowercenter of gravity. operation of the double set of motors. The current supplied to the line is a11,000 volt 25 cycle single-phase current,which is taken by the primary of a statictransformer. Each motor is capable of developing1,200 horsepower, so that the four give thelocomotive a rating of 4,800 horsepower,which, being converted to tractive effort,means about 87,000 pounds at 20.8 milesper hour. As the rating of the enginefor continuous working is 4,0CO horse-power, the corresponding tractive effortis about 72,000 pounds. Converted totonnage rating this means a capacity to
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The freight locomotive under consider-ation has a somewhat different motorarrangement. Instead of the one powerfulmotor connected to the jackshaft by rods,there are two motors driving the jack-shaft through herringbone pinions. Thislowers the center of the motors some dis-tance below that of the single-motorengine, but does away with the diagonalconnection. But the center of gravity ofthe engine as a whole is probably notgreatly lowered thereby, if at all. Thereis more electric apparatus in the cab,among which is the phase converter whichchanges the signal phase current comingto it from the line through the transformerto the three-phase current used for the haul 2,300 tuns at a speed of 20.8 milesper hour up a 1 per cent grade, or 4,100tons up a .5 per cent grade at the samespeed. Under this rating, two locomotivesare expected to handle 3,900 tons west-bound, where the ruling grade is 2 percent, and 6.300 tons eastbound, where theruling grade is 1.33 per cent. Among the interesting de

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