. The Street railway journal . _0O_. -f FIG. 11.—DIAGRAM WITH NOTATION ADDED ^rr^hl-fi-, ft-* I- riWWTYJThfTt-iTTl ,140 160 the motors in series until about sixty seconds had elasped, whenthe controller was thrown into multiple upon taking the so-called Bunker Hill Street curve. The gradual decrease in cur-rent per car on the series-motor curve is clearly shown, themaximum series current being approximately 240 amps., andthe minimum, 50 amps., at a speed of 20 The low rateof acceleration when running in series through the SullivanSquare yard is also apparent, as is the instantan
. The Street railway journal . _0O_. -f FIG. 11.—DIAGRAM WITH NOTATION ADDED ^rr^hl-fi-, ft-* I- riWWTYJThfTt-iTTl ,140 160 the motors in series until about sixty seconds had elasped, whenthe controller was thrown into multiple upon taking the so-called Bunker Hill Street curve. The gradual decrease in cur-rent per car on the series-motor curve is clearly shown, themaximum series current being approximately 240 amps., andthe minimum, 50 amps., at a speed of 20 The low rateof acceleration when running in series through the SullivanSquare yard is also apparent, as is the instantaneous increasein the rate of acceleration upon going into multiple and taking344 amps. Full multiple running brought the train to a maxi-mum speed of 40 , the acceleration curve showing thegradual decrease in the rate of gaining speed as the motorstook less and less current. At the point of maximum speed thecurrent was 125 amps. During this acceleration the calibrationpoints on the structure were passed, and the average speed
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
