. Electric railway journal . ster, and makes a little more than 100,000miles per year. The total distance between terminalsis miles and the scheduled time is two hours andforty minutes. The schedule allows approximately fif-teen stops, and necessitates a free running speed ofbetween 62 and 65 The bearings are oiled aboutevery 40,000 car-miles with car oil, one quart of oilbeing used for each bearing. With oil at 20 cents pergallon and labor at 20 cents per hour, the cost of laborand oil is IV2 cents per 1000 car-miles. The Syracuse has caused no trouble since it was putin operatio
. Electric railway journal . ster, and makes a little more than 100,000miles per year. The total distance between terminalsis miles and the scheduled time is two hours andforty minutes. The schedule allows approximately fif-teen stops, and necessitates a free running speed ofbetween 62 and 65 The bearings are oiled aboutevery 40,000 car-miles with car oil, one quart of oilbeing used for each bearing. With oil at 20 cents pergallon and labor at 20 cents per hour, the cost of laborand oil is IV2 cents per 1000 car-miles. The Syracuse has caused no trouble since it was putin operation, but has had several pull-ins on account ofsnow or weather conditions. When this car was oper-ated with the plain journal bearings it was not possibleto make the scheduled time. However, since the rollerbearings have been installed the car has been able tomake the running time. The Newark has had onepull-in on account of a broken drawhead, but at no timehas this or the other car been pulled in on account ofbearing VIEW OF TRUCK EQUIPPED WITH ROLLER BEARINGS 866 ELECTRIC RAILWAY JOURNAL [Vol. XLVII, No. 19 Table I.—Energy and Lubrication Costs—Plain and RollerBearings, Car Weight, Lb. Plain Roller Bearings Bearings Annual mileage 103,446 103,446 Energy consumption, kilowatt-hours 372,405 327,717 Energy cost, at 1 cent per kilowatt-hour. . .$3, $3, Cost of oil Cost of waste .... Cost of rebabbitting, labor and material .... Cost of labor for oiling Cost of labor replacing oil every 1000 miles. .... Total annual cost $3, $3, Difference in annual saving, $ or per cent. In testing the operation of the above cars, the read-ings of energy consumed were taken on the car with awatt-hour meter read weekly over a long period. Thecar was run over the same road, and with the sameschedule as another car of the same weight equippedwith plain bearings. Starting tests were also made witha dynamometer
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