. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . P., at the traveling engi-neefs convention, in Chicago, statedthat a Vauclain compound cutting off at7 or 8 ins. is no lighter on water butlighter on fuel and that the flues lastlonger. A.—As Mr. Stewart did notproduce statistics to prove his assertions,we assume that it was merely his per-sonal opinion. The heating surfaces ofthe Vauclain compounds may possiblybe greater and better proportioned thanthe simple engines he refers to, whichwould give them a greater evaporativeefficiency for the
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . P., at the traveling engi-neefs convention, in Chicago, statedthat a Vauclain compound cutting off at7 or 8 ins. is no lighter on water butlighter on fuel and that the flues lastlonger. A.—As Mr. Stewart did notproduce statistics to prove his assertions,we assume that it was merely his per-sonal opinion. The heating surfaces ofthe Vauclain compounds may possiblybe greater and better proportioned thanthe simple engines he refers to, whichwould give them a greater evaporativeefficiency for the same quantity of coalconsumed. Piston clearance, leaks aboutthe boiler, carrying a high water leveland working wet steam are all factorsto be considered. With the softer ex-haust of the compound the life of theflue should be prolonged. Conditionsmust govern both cases. 2. Is there any truth in the statementoften made by engineers that an engineonce blown up or burned will be hardon coal and water? A.—None whatever,if there is enough left after the explosionto put her in her former AUTOMOBII^E INSPECTION CAR. (80) W. S. B., Quebec, writes:The Quebec & Lake St. John Railwaysome years ago bought two consolidationengines at Kingston. Two pairs of driv-ers were under the fire box and gave con-siderable trouble. Later the M. M. re-moved the rear driver. A says that theengines lost some of their tractive power,while B says there is no change. Whois right? A.—If in removing the reardrivers the weight was equally trans-ferred from the rear drivers to the re-maining drivers, the tractive effort re-mains the same, and the engine shoulddo better work when once under way,as there is less resistance from frictiondue to the removal of one pair of rodsand wheels. The fewer driving wheelsan engine has the better for free work-ing. If there is weight sufficient to keepthem from slipping, one pair of driversis most desirable. tor Works, of Detroit, Mich., whose well-known runabo
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
