. Railway master mechanic [microform] . 1878 80 82 84 86 68 90 92 94- 96 98 /900 OZ 04 5—Tractive Effort by Formula. been increased in this type of engine as in the case ofroad engines, the ratio of tube length to tube diametervarying in most instances between sixty and the ratio of total heating surface to weight ofone cylinder full of steam at boiler pressure varies con-siderably, it is in the majority of cases greater than 900and largely greater than 1,000. In this connection wewish to rectify an error in the figures on the curves rep-resenting this proportion for freight locom
. Railway master mechanic [microform] . 1878 80 82 84 86 68 90 92 94- 96 98 /900 OZ 04 5—Tractive Effort by Formula. been increased in this type of engine as in the case ofroad engines, the ratio of tube length to tube diametervarying in most instances between sixty and the ratio of total heating surface to weight ofone cylinder full of steam at boiler pressure varies con-siderably, it is in the majority of cases greater than 900and largely greater than 1,000. In this connection wewish to rectify an error in the figures on the curves rep-resenting this proportion for freight locomotives, ap-. 7876 80 62 84- 86 88 90 92 94 96 98 7900 OZ 04 Fig. 3—Steam Pressure, 1878 80 62 d4 86 88 90 92 9t 96 98 7900 02 .04- Fig, 6- Ratio ou Weight on Drivers to TractiveEffort, 40 RAILWAY MASTER MECHANIC February, 1904.
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