. American engineer and railroad journal . nd to obtaining thebest possible design of boiler for the type, offers nothing par-ticularly unusual. The driving wheel base has been length-ened to 15 ft. 10 ins., which places the 69 in. wheels a consid-erable distance apart, allowing excellent opportunities for in-spection. The application of the Walschaert valve gear to a Pacificor 10-wheel locomotive presents difficulties not encounteredon an Atlantic type, or any type having a two-wheeled enginetruck. This is due to the location of the forward drivingwheel, which is so far forward as to throw th
. American engineer and railroad journal . nd to obtaining thebest possible design of boiler for the type, offers nothing par-ticularly unusual. The driving wheel base has been length-ened to 15 ft. 10 ins., which places the 69 in. wheels a consid-erable distance apart, allowing excellent opportunities for in-spection. The application of the Walschaert valve gear to a Pacificor 10-wheel locomotive presents difficulties not encounteredon an Atlantic type, or any type having a two-wheeled enginetruck. This is due to the location of the forward drivingwheel, which is so far forward as to throw the guide yokeup to the centre of the guides, and not far enough forwardto allow the yoke to be placed back of the first driver, andhence it is impossible to carry the link on a support from theguide yoke as is usually done. On the other hand, it is notadvisable to locate the link at a point back of the front drivingwheel, as this gives an excessively long radius bar and a shorteccentric rod, hence the desirable location for the link places. WALSCHAERT valve ceab—FEISCO LOCOMOTIVE. Mabch, 1907. AMERICAN ENGINEER AND RAILROAD JOURNAL. 105 it at a point somewhere near the centre of the front drivingwheel. The difficulty has been solved on this locomotive by theuse of a cast steel cross tie on top of the frames, to which issecured a special shaped casting extending forward and out-side of the driving wheel from which the link is cross casting also carries the bearing for the reverseshaft, the arm connection to the radius bar being made by aslip joint. The result by this arrangement is an almost idealvalve motion. The construction of the valve gear is shown in the illustra-tion herewith and the general dimensions, weights and ratiosof the locomotive are as follows: GENERAL DATA. Gauge 4 ft. in Service Mixed Fuol Bituminous coal Tractive elfoit 28,300 lbs. Weight in working order 183, I lbs Weight on drivers 136,000 lbs. Weight on leading truck 47,000 lbs, Weight
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