. Electric railway journal . y material was furnished bythe Siemens-Schuckert Company and the high-tensionand converter station equipment by the Alioth Com-pany. All Rhatian locomotives have frame-mounted motorsand the same type of parallel rod drive, the only differ- The locomotives must be capable of drawing a totalweight of 200 tons. The hour rating of the locomotiveswas set at 600 hp. This corresponds to a speed of , a one-hour tractive effort of 12,672 lb. at theperiphery of the wheels, or the pulling of a 180-tonload at on a grade of 2% per cent. Themaximum tractiv
. Electric railway journal . y material was furnished bythe Siemens-Schuckert Company and the high-tensionand converter station equipment by the Alioth Com-pany. All Rhatian locomotives have frame-mounted motorsand the same type of parallel rod drive, the only differ- The locomotives must be capable of drawing a totalweight of 200 tons. The hour rating of the locomotiveswas set at 600 hp. This corresponds to a speed of , a one-hour tractive effort of 12,672 lb. at theperiphery of the wheels, or the pulling of a 180-tonload at on a grade of 2% per cent. Themaximum tractive effort as exhibited during accelera-tion was specified at one and one-half times the hourrating. This corresponds to an acceleration of on a maximum grade of per cent. It cor-responds also to an acceleration of onlevel track. The motors must operate sparklessiy at allloads. mechanical partThe number of coupled axles was fixed by the max-imum permissible axle pressure of 11 metric tons and. Rhatian Railway—View of Steel Pole Catenary Construction and Train with Passenger and Freight Cars ence being that the 1-B-l type has two driving axles and also by the maximum tractive effort. On account of the 1-D-l type four driving axles. the high elevation, which subjects the line to more un-favorable climatic conditions than a lowland railway, REQUIREMENTS OF LOCOMOTIVES jt wag not heM advisable to permit the coefficient of The principal data on the Oerlikon locomotives are friction to fall below one-seventh. The two middle driv- given in the following table: ing axles are rigidly fixed in the locomotive framing —-— —-— and are located ft. centers. The end driving axles Line and Locomotive Data . . _ . . , , , .,, Average single-phase line voltage 10,000 volts have a side play of 2 in. x 1 in. and are connected with +. °r .77: \ \!.\ \. \..]\. \. \ \. \. .le^cycles lhe adjacent pony axle to form a so-called Bisell
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