. The street railway review . s up the steepest inclines, thetotal train weight then being 100 tons. A reference to Table Ishows that if the steepest grade had been i in 100 instead of i in40, as at present, the same locomotives could either carry a trainof 100 tons at full speed, or a train of 200 tons at half speed. The made during the intervals between the passing of the regular traffic,were conducted on a motor car to which trailers could be method of conducting a test was as follows: One of theengineers of the line took charge of the controlling apparatusand acted as motorman
. The street railway review . s up the steepest inclines, thetotal train weight then being 100 tons. A reference to Table Ishows that if the steepest grade had been i in 100 instead of i in40, as at present, the same locomotives could either carry a trainof 100 tons at full speed, or a train of 200 tons at half speed. The made during the intervals between the passing of the regular traffic,were conducted on a motor car to which trailers could be method of conducting a test was as follows: One of theengineers of the line took charge of the controlling apparatusand acted as motorman. In the forward vestibule an assistant gavethe time from a stop-watch to an observer who noted the ammeterreading at each instant. In the rear vestibule a second assistantgave the time from a stop-watch, while one observer noted the volt-meter reading, and another took the reading of a speed men were told off to keep a lookout and announce pointspassed on the track, such as grade posts, etc. The speed indicator. 30 60 90 120 FIG. 10—ACCELERATION CURVES, CONTINUOUS CURRENT. made a continuous automatic record of the speed, which was de-tached and numbered after each test. The motorman signalled thestart, at the same moment throwing over the controller, so as togive the motors the maximum current, which was maintained con-stant as long as possible. The readings of all instruments weretaken at five second intervals from the moment of starting, and onevoltmeter reading was taken immediately before starting. Eachobserver recorded his own observations, and filled in those of theother observers after every test. The car was allowed to proceedfor some distance after full speed had been reached, the current
Size: 2175px × 1149px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
