. Electric traction for railway trains; a book for students, electrical and mechanical engineers, superintendents of motive power and others .. . de rod. Side rods connect the three axles. Gear ratio is and gear teeth are waved-shaped, consisting of a double anglewith rounded tips, the sides being at an angle of about 45 degrees. Maximum pres-sure on teeth is 1850 pounds per square inch. Gear wheels are 57 inches in run equally well on direct current at 400 volts and on one phase of a three-phase circuit. They are the largest motors yet built and have a remarkably highweig
. Electric traction for railway trains; a book for students, electrical and mechanical engineers, superintendents of motive power and others .. . de rod. Side rods connect the three axles. Gear ratio is and gear teeth are waved-shaped, consisting of a double anglewith rounded tips, the sides being at an angle of about 45 degrees. Maximum pres-sure on teeth is 1850 pounds per square inch. Gear wheels are 57 inches in run equally well on direct current at 400 volts and on one phase of a three-phase circuit. They are the largest motors yet built and have a remarkably highweight efficiency. DESCRIPTION OF SINGLE-PHASE LOCOMOTIVES 395 References: E. ^Y., Nov. 17, 1910, p. 1191; E. R. J., June 18, 1910; July 29, 1911. Performance tests show a maximum tractive effort of 33,000 pounds, and a normaltractive effort of 28,800 pounds at 26 or 2000 By utilizing a quickly mademodification of the secondary transformer windings, to provide for a higher voltage3000 can be exerted for an hour at a speed of 37 , and motors then have continuous rating. (Oerlikon Bulletin No. 63, August, 1910.). Fig. 166.— Bernese Alps Railroad. Armature and Pinion on Oerlikon Locomotive Motor. COMPARISON OF OERLIKON WITH OTHER LOCOMOTIVES. Name of railroad. Name ofmfgr. Elec- One tric hour system. 2200 600-v. 2500 660-v. 3-p. 1980 25-cy. 3-p. 1700 15-cy. 3-p. 1700 25-cy. 1-p. 1340 -25-cy. 1-p. 1600 15-cy. 1-p. 1600 15-cy. 1-p. 2000 15-cy. wt. 1-hour Max. Wt. of in per ton. speed motors tons. tons. 115 60 25 157 66 48 67 28 27 76 43 115 15 30 130 50 38 89 46 30 103 46 30 97 44 21 Wt. oftransf.,tons. New York G .E Pennsylvania West. . Giovi West. . Simplon Tunnel Brown . Great Northern Boston & Maine West. . French Southern West. . Bernese Alps \ . Bernese Alps Oerlikon. 100016001440 150011801200 2000 12 Continuous rating of alte
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