. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . piston stroke willexceed three-eighths of an inch. It wouldbe interesting if the records of steam in-dicator diagrams could be secured inillustration of the results obtained on thelocomotives referred to by our corre-spondent. The views of any of our read-ers, who may have had experience in thisdirection, would be welcomed. The tend-ency of modern locomotive practice is todiminish the amount of lead or valveopening, and the inventors have beenbusy devising means to open the valverapidly after
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . piston stroke willexceed three-eighths of an inch. It wouldbe interesting if the records of steam in-dicator diagrams could be secured inillustration of the results obtained on thelocomotives referred to by our corre-spondent. The views of any of our read-ers, who may have had experience in thisdirection, would be welcomed. The tend-ency of modern locomotive practice is todiminish the amount of lead or valveopening, and the inventors have beenbusy devising means to open the valverapidly after the piston had completed itsstroke, rather than open the valve to anyappreciable extent before the stroke wascompleted. Our latest new book TheValve-Setters Guide, discusses the sub-ject very fully, but, as we stated before,we would be pleased to have the opinionsof our readers, who may be situated sothat their experience would be primafiicic testimony on the question.—Editor.] Position of Loads and Empties. Editor: I have heard a great deal of discussionamong railroad men relative to the posi-. FIG. 2. OLD CLASS K, BLULT AT ALTOONA IN 1893. Lead in the Walschaerts Valve : We have been overhauling several en-gines here that are equipped with the had, would also give us the benefit oftheir observations on engines equippedwith that particular value gear. This isthe first general repairing that has beendone on the engines, and I have noknowledge about the original amount oflead that was allowed when this classof engine was , Wis. S. W. tion of loaded or empty cars in a great many of the transportation menclaim that 20 loads next the locomotiveand 20 empties next the caboose will pullas hard as when the position is the re-versed, and that the dynamometer willprove it, while engineers claim that theyget better results with the loads a level and straight track it may not ^^arcll. lyiO. AXD LOCOMOTIVE KNGINKIiRIXG. make so much diffe
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