File:Railway mechanical engineer (1916) (14761546125).jpg

Identifier: railwaymechanica96newy (find matches)
Title: Railway mechanical engineer
Year: 1916 (1910s)
Authors:
Subjects: Railroad engineering Engineering Railroads Railroad cars
Publisher: New York, N.Y. : Simmons-Boardman Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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ed on a basis of 85 per cent m.e.p. is41,950 lb., this gives a ratio of 3.27 to 1, a low figure butapparently entirely practical on account of the even torqueproduced by the-three cylinders with cranks set at 120 deg.In fact the three-cylinder system appears to be the logicalsolution of the problem of designing a locomotive of hightractive force with restricted axle loadings. From the table of dimensions, weights and proportionsit will be noted that the weight is 92.6 lb. per cylinder horse-power and 114.2 lb. per boiler horsepower which shows gooddesigning in the use of materials. The boiler horsepower, calculated according to the practiceof the American Locomotive Company, is only 1,702 whereasthe cylinder horsepower is 2,100. The coal rate per squarefof>t of grate per hour is 136 lb., assuming coal to be of12,000 B.t.u. value. The lx)iler capacity is less than wouldappear to be advisable judging by .American experience. 445 446 RAILWAY MECHANICAL ENGINEER Vol. 96, No. 8 f 2T<
Text Appearing After Image:
_1 e •^ I Ul - D 5 Z S -I c > - U c 2 5 AvciST. K22 RAILWAY MECHANICAL EXGIXEEK 447

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