. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . the recip-rocating masses (piston, piston-rod, cross-head, etc.) cannot balance revolving masses are balanced byadding weights to the wheel rim, leavingit in equilibrium. The same thing is doneto balance the reciprocating masses, butunfortunately this destroys the equilib-rium of the wheel. If weights are addedto the rim in such a position that whenthe reciprocating masses are moving inone direction, the weights are moving inthe opposite direction, then balancing willbe effecte
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . the recip-rocating masses (piston, piston-rod, cross-head, etc.) cannot balance revolving masses are balanced byadding weights to the wheel rim, leavingit in equilibrium. The same thing is doneto balance the reciprocating masses, butunfortunately this destroys the equilib-rium of the wheel. If weights are addedto the rim in such a position that whenthe reciprocating masses are moving inone direction, the weights are moving inthe opposite direction, then balancing willbe effected when the weights, thoughnecessarily moving in a circle, have amean direction of motion in a line foreand aft of the locomotive, i. e. in the topand bottom portions of their circum-ferential path, which is the path of thewheel rim. C. S. Stock. Fiiisbiiry Park, London, Eng. Railways in the Philippines. Editor: Manila is 30 days from San Francisco,and a railroad man coming this way hasan opportunity of seeing Hawaii, Japan,and China. At Hawaii he will find sev-eral small -American roads with Bald-. cylinder design vindicates its superiorityover the 2 cylinders. Balancing is a rather complex subject,especially secondary balancing, due to ob-liquity of connecting rod, etc., but viewedfrom a practical standpoint the mainfacts are sufficient. In our 2 cylinder en-gine the balancing of the revolving massespresents little difficulty. It is in dealingwith the reciprocating masses that the diffi- i;V THE PHILIllINi; KAIIW \\, win engines, but jobs are scarce exceptto skilled mechanics, as their engineersare mostly made. In Japan the entiremotive power officials are Japanese fromA to Z, and I have not seen a foreigneron a Japanese railroad. The wages paidtor mechanics range from 30 cents to$ in gold per day. Their system isentirely English; still they have quite anumber of Baldwin engines, and all re- August, 1909. RAILWAY AND LOCOMOTIVE ENGINEERING 339 ports to the contrary, these
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