. Electric railway journal . supported on the front and rear trucks thatany lateral thrust or kick of the leading or trailing wheelsagainst the track is cushioned by the movement of themain cab, which increases the weight bearing down on thewheels at the point where the thrust occurs and automati-cally reacts to prevent any distortion of the track. Thisdesign is said to :^esult in very satisfactory riding qualitiesat high speeds. Exhaustive tests on the General Electric Companys testtracks at Erie, Pa., have demonstrated excellent ridingcjualities of the new locomotive at speed up to 65
. Electric railway journal . supported on the front and rear trucks thatany lateral thrust or kick of the leading or trailing wheelsagainst the track is cushioned by the movement of themain cab, which increases the weight bearing down on thewheels at the point where the thrust occurs and automati-cally reacts to prevent any distortion of the track. Thisdesign is said to :^esult in very satisfactory riding qualitiesat high speeds. Exhaustive tests on the General Electric Companys testtracks at Erie, Pa., have demonstrated excellent ridingcjualities of the new locomotive at speed up to 65 ,the limit on the length of the test track available. Thetests also indicate that the locomotive will operate at muchhigher speeds equally well. The locomotive is designed for handling in normal ser-vice a twelve-car train weighing 960 tons trailing againsta grade of 2 per cent at 25 To do so requires56,500 lb. tractive efEort, equivalent to a coefficient ofadhesion of per cent of the weight upon the driving I 4. GROUP OF MEN GATHERED AT ERIE, PA., TO WITNESS DEMONSTRATION TESTS OF ELEO November 1, 1919 829 axles. This allows a margin between the operating trac-tive coefficient and the slipping point of the wheels suffi-cient to permit the locomotive to hold trains containing asmany as fourteen cars in emergencies, and the motors havecorresponding necessary extra capacity. For continuousoperation tlie locomotive is designed to operate at 43,000 effort at a speed of 27 The principal data for the new locomotive are given inthe table on page 830. Part of the Motors Furnish Excitation DuringEeqeneration In most respects the control equipment of the new loco-motive is similar to that in use on the locomotives whichhave been operating on the St. Paul for nearly four important difference, however, is in the means usedfor exciting the motors which are acting as generatorsduring regeneration. Four of the main motors are utilizedfor this
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