. Railway mechanical engineer . 337,2 Tubes SO. S$ Flues. M\^%- Cross Sections of the Boiler sistances are so chosen in relation to the weight coming uponeach centering device that the lateral resultants at the enginetrack and first driver are about the same in amount. It willthus be seen that in effect the engine truck and the firstdriver act in practically the same way as a four-wheel enginetruck in guiding the front of the locomotive, except that tlie Careful attention was given to the boiler design, and theboilers of both engines have the advantage of short tubelength and large diameter. A
. Railway mechanical engineer . 337,2 Tubes SO. S$ Flues. M\^%- Cross Sections of the Boiler sistances are so chosen in relation to the weight coming uponeach centering device that the lateral resultants at the enginetrack and first driver are about the same in amount. It willthus be seen that in effect the engine truck and the firstdriver act in practically the same way as a four-wheel enginetruck in guiding the front of the locomotive, except that tlie Careful attention was given to the boiler design, and theboilers of both engines have the advantage of short tubelength and large diameter. A short tube length not onlygives greater evaporative value per square foot of heatingsurface, but also reduces back pressure and consequently in-creases the power of the engine. Large boiler diameter 226 RAILWAY MECHANICAL ENGINEER Vol. 90, No. 5 combined with short tube length gives a large volume ofwater where the evaporative value is the highest. The distance is short from the rear wheel to the draw barin both engines. This
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
