. Electric railway journal . 1.280 .98 .569 .515 1.10 .086 1.45 .042 .011 3.90 1.194 .95 .527 .504 1.045 16.5 .76 7.16 3. 2.38 1.45 1.32 1.93 4.45 .44 23. 1.83 21.6 10. 2.16 18.75 1.01 24.04 25.95 .93 20.8 1.01 26.00 26.48 .98 84.09 1.11 50.8 48.75 1.43 65.6 1.13 89.3 94.6 .94 70.4 1.16 96.4 96.9 .98 23.6 1.16 32.3 32.5 .99 3.504 1.11 3.71 3.66 1.02 87.6 1.11 92.7 91.3 1.04 .053 1.14 .058 .055 1.05 mutating switch fingers. If, having made these tests, thecar does not start, inspect equipment thoroughly for de-fects, especially main fuses, grids, motor leads, reversefingers, cut-out fingers, ch
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. Electric railway journal . 1.280 .98 .569 .515 1.10 .086 1.45 .042 .011 3.90 1.194 .95 .527 .504 1.045 16.5 .76 7.16 3. 2.38 1.45 1.32 1.93 4.45 .44 23. 1.83 21.6 10. 2.16 18.75 1.01 24.04 25.95 .93 20.8 1.01 26.00 26.48 .98 84.09 1.11 50.8 48.75 1.43 65.6 1.13 89.3 94.6 .94 70.4 1.16 96.4 96.9 .98 23.6 1.16 32.3 32.5 .99 3.504 1.11 3.71 3.66 1.02 87.6 1.11 92.7 91.3 1.04 .053 1.14 .058 .055 1.05 mutating switch fingers. If, having made these tests, thecar does not start, inspect equipment thoroughly for de-fects, especially main fuses, grids, motor leads, reversefingers, cut-out fingers, change-over fingers and contactortips. If dynamotor fuse is O. K. and machine refuses tooperate move the commutating switch handle back and forthseveral times to be sure of good contact. (The trolley mustbe locked down while this is being done.) Provided thatthis does not clear the trouble examine brushes and leadconnections; also small fingers on the commutating switch. It is impossible to operate the car on 1200 volts unless. Ivlilwaukee Interurban Lines—Roof Insulators and Dis-charge Horns at Watertown Substation the dynamotor is running properly. However, if anothermotor car is available, the two cars may be coupled togetherand by plugging in a trailer light connection the disabledcar may be operated in the usual manner or the two can beoperated simultaneously. It is absolutely necessary, beforethis is done, to disconnect the dynamotor leads outside ofthe casing and securely tape the bare ends. To replace fuse, open cover of fuse box outward, turn sary) and allow the compressor to pump up to normal pres-sure. Then pull down the trolley pole, open 600-1200-voltswitch (following directions on cover) and remove aircompressor fuse until pressure has dropped to a point toolow for safety, then replace and pump reservoir to pressureagain. COMPARATIVE FIRST COST AND MAINTENANCE OF A.C. ANDD.C. CAR EQUIPMENT The first cost of the cars compares as 100 for a.c, 91.7for d.c. and 21.5 f