. American engineer and railroad journal . ing surface to grate area in the Mallet than has been theprevious practice in locomotives of this type. Service tests ofthis type designed to burn bituminous coal have, that larger grate areas have hitherto been provided thanwere required for slow speed service. In this design, therefore,the grate area was reduced, thus facilitating firing and requir-ing a higher and possibly better rate of combustion. With the exception of a larger boiler and larger truck wheels,this locomotive is practically duplicate in design to eightrecently deliver
. American engineer and railroad journal . ing surface to grate area in the Mallet than has been theprevious practice in locomotives of this type. Service tests ofthis type designed to burn bituminous coal have, that larger grate areas have hitherto been provided thanwere required for slow speed service. In this design, therefore,the grate area was reduced, thus facilitating firing and requir-ing a higher and possibly better rate of combustion. With the exception of a larger boiler and larger truck wheels,this locomotive is practically duplicate in design to eightrecently delivered by the same builders to the Denver & RioGrande Railway. Exhaustive dynamometer and efficiency testsare now being made of this engine on the Pennsylvania Divisionof the New York Central. In working order the engine has a total weight of 342,000pounds, of which 296,500 pounds is carried on the driving high pressure cylinders are 20>2 in. in diameter by 32 stroke, and the low pressure 33 in. in diameter by the same. LARGE 2-6-6-2 TYPE LOCOMOTIVE BUILT FOR THE BOSTON AND ALBANY RAILROAD EY THE AMERICANLOCOMOTIVE COMPANY. THIS IS THE FIRST EXAMPLE OF THE MALLET TYPE TO BE PUT INTOSERVICE ON THE NEW YORK CENTRAL LINES. a division of this character by their use and the officials of theNew York Central Lines are considering the adoption of thatclass of locomotive for this service. The locomotive illustratedherewith was ordered from the American Locomotive Com-pany for the purpose of determining its value in this particu-lar case. A comparison of the principal dimensions of the Mallet andthe present standard consolidation locomotive are given in thefollowing table: Type. 2-8-0. 2-6-6-2. Weight in working order 234,000 lbs. 342,000 lbs. Weight on drivers 208,700 lbs. 296,500 lbs. Weight on leading truck 25,300 lbs. 23,500 lbs. Weight on trailing truck 22,000 lbs. Diameter of driving wheels 63 in. 57 in. Cylinders, diameter and stroke 23 in. x 32 in. ;0/2 & 33 x 3S
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
