A Powerful Locomotive

The new “G3d” type of passenger locomotive (illustrated below) was recently introduced on the Canadian Pacific Railway system. One of the outstanding features of this new engine is the increase in boiler pressure from 2001b to 2501b per square inch—the latter pressure being made possible through the introduction of nickel steel boiler plate. This locomotive can haul fifteen Canadian Pacific sleeping cars, each averaging seventy tons, at express train speed. Following are the chief particulars of the new locomotive: Boiler pressure, 2501b per square inch; firebox, width inside 7ft ¼in, length 9ft 3 1–16in; number of tubes, 160-28-40; diameter of tubes, 2 ¼in-2in-5 ½in; length between tube sheets, 17ft 10 ¾in; superheating surface, 864 sq. ft.; firebox heating surface, 258 sq. ft.; arch tube h.s., 33 sq. ft.; tubes, h.s., 2981 sq. ft.; fire h.s., 3272 sq. ft. (total of all heating surfaces 4136 sq. ft.); grate area, 65 sq. feet.; cylinders, 23in × 30in; driving wheels, 75in.; weight on drivers 184,000lb; total weight of engine, 306,500lbs. (weight light 279,600lb); loaded weight on tender, 191,000lb (weight light 86,900lb); water capacity, 8000 imperial gallons; coal capacity, 12 tons.