. Railway mechanical engineer . onsists of 40 unitsand has a superheating surface of 836 sq. ft. The cylindershave a stroke of 30 in., which is a departure from the usualpractice in passenger locomotive design. The long strokewas based on the results of numerous tests of locomotiveswith superheaters made by the Southern Pacific, which justi-fied the use of the longer stroke with superheated steam. The boiler is of the straight top type with a firebox 90 placed over the rear truck. The combustion chamberis 5 ft. 4 in. long, and the tubes have a length of 21 ft. Thecylinders have a strok
. Railway mechanical engineer . onsists of 40 unitsand has a superheating surface of 836 sq. ft. The cylindershave a stroke of 30 in., which is a departure from the usualpractice in passenger locomotive design. The long strokewas based on the results of numerous tests of locomotiveswith superheaters made by the Southern Pacific, which justi-fied the use of the longer stroke with superheated steam. The boiler is of the straight top type with a firebox 90 placed over the rear truck. The combustion chamberis 5 ft. 4 in. long, and the tubes have a length of 21 ft. Thecylinders have a stroke of 32 in. and lateral motion drivingboxes are provided on the first pair of drivers. Among the specialties applied to both types of these loco-motives are Commonwealth cast steel tender frames, four-wheel equalizing swing motion tender trucks, Delta typetrailing truck frames, radial buffers, Unit type safety bars,Ragonnet power reverse gears, extended main driving boxesand Nathan non-lifting injectors. A complete installation. 2-10-2 Type Locomotive for Handling Tons on Per Cent Grades The performance of these 4-6-2 type locomotives since goinginto service has proved that no mistake was made in adoptinga longer stroke for passenger locomotives. The 2-10-2 type locomotives have a rated tractive effortof 75,150 lb., with 297,300 lb. on drivers, the ratio of ad-hesion being The total equivalent heating surface is6,933 sq. ft., or 1 sq. ft. for each lb. of tractive effort,this ratio likewise indicating excellent steaming capacity. of flexible staybolts is made in the breaking zone ofthe firebox and in the combustion chamber around the bellvof the boiler. Both types are oil burners and are equipped with Wal-schaert valve gear with the link block in the bottom of thelink in forward motion, the gear being so arranged as to giveequal cut-off at 55 per cent of the stroke. The lead is ]4 in.,lap 1J4 in., exhaust clearance l/$ in., and valve travel for COMPAR
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
