. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ry drifting valve. Steam pres- Grate Cylinders. Drivers, sure. area. 25 x 32 57 200 27 x 32 63 190 Waterheatingsurface. Super-heatingsurface. Weight ondrivers. Weight, totalengine. Tractiveforce. 4, 8801,086 228,000228,900 292,400314,900 59,600 59,800 not only brace the pedestals throughtheir entire depth, but are also extendedto form long braces for the top support, respectively, the guideyoke, valve motion bearer, and a boilerwaist sheet. The sh
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ry drifting valve. Steam pres- Grate Cylinders. Drivers, sure. area. 25 x 32 57 200 27 x 32 63 190 Waterheatingsurface. Super-heatingsurface. Weight ondrivers. Weight, totalengine. Tractiveforce. 4, 8801,086 228,000228,900 292,400314,900 59,600 59,800 not only brace the pedestals throughtheir entire depth, but are also extendedto form long braces for the top support, respectively, the guideyoke, valve motion bearer, and a boilerwaist sheet. The shoes and wedges are of cast steel,and the driving boxes are of the samematerial, with brass hub faces. Longmain driving boxes are used. The tiresare all flanged, and flange oilers are ap-plied to the leading drivers. The leadingtruck is of the Economy constant resist-ance type, and the trailing truck is of theHodges type. Each truck is equalizedwith two pairs of driving-wheels. Thearrangement of cross equalization fre-quently applied by the builders, consistingof two transverse beams connected by a. S. L. Bean, Superintendent Motive Power. MIKADO LOCOMOTIVE FOR THE A. T. & S. F. Baldwin Locomotive Works. Builders. Wheel load limitations prohibited amaterial increase in the weight on drivers,as compared with the design of 1916; andwhile the new engines are heavier, theadditional weight is carried on the frontand rear trucks. The principal advantagederived from this greater weight, is theincreased steaming capacity of the en-larged boiler. With this additional steamsupply, the larger cylinder horse-power,incident to the use of driving-wheels ofgreater diameter, can be developed. Foran increase in total weight of not quite8 per cent., there has been an increase inwater heating surface of over 11 per starting or tractive force, with steampressures giving approximately the sameratio of adhesion, is practically the samefor both locomotives; but, as mentionedpreviously, the la
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