. Official proceedings . O IO ZO SO <4-0 50 60 70 &O per lines show the resultant braking power with the serviceand emergency applications, when the braking power isfigured at 90 per cent, with a 60-pound cylinder pressure, andthe two lower lines show the corresponding percentages ofpower developed with a braking force figured at 70 per cent. Fig. 2 shows the corresponding curves for the 100,000-pound capacity steel car. The weight of the 50,000-pound capacity car is taken as24,ooo,and that of the 100,000-pound capacity steel car, as 40,-000 pounds, these weights_being found in use with the
. Official proceedings . O IO ZO SO <4-0 50 60 70 &O per lines show the resultant braking power with the serviceand emergency applications, when the braking power isfigured at 90 per cent, with a 60-pound cylinder pressure, andthe two lower lines show the corresponding percentages ofpower developed with a braking force figured at 70 per cent. Fig. 2 shows the corresponding curves for the 100,000-pound capacity steel car. The weight of the 50,000-pound capacity car is taken as24,ooo,and that of the 100,000-pound capacity steel car, as 40,-000 pounds, these weights_being found in use with these class-es of cars. The figures used show the most favorable compari-sons, since the weight of the 50,000 pound capacity woodencar is a little below the average, while the weight of the steelcar is a little above the present average. Higher Braking Power for Freight Cars. 59. 60 Proceedings Railway Club of Pittsburgh. A comparative study of the curves, reveals the following: EMPLOYING 70^ BRAKING POWER. Max. Br. Pr. 50,000 cap. car, light, in emergency. .70 c/oMax. Br. Pr. 100,000 cap. car. light, in emergency. .70 % Max. Br. Pr. 50,000 cap. car. light, in service 58 1-3% Max. Br. Pr. 100,000 cap. car, light, in service 58 1-3% Max. Br. Pr. 50,000 cap. car, loaded to full capacity plus 10/ in emergency 21^4 % Max. Br. Pr. 100,000 cap. car, loaded to full capacity plus 10% in emergency 1834 c/o Max. Br. Pr. cap. car, loaded to full capacity plus 10% in service 17 vj % Max. Br. Pr. 100,000 cap. car, loaded to full capacity plus \oc( in service i5T/2 % EMPLOYING 90/ BRAKING POWER. Max. Br. Pr. 50,000 cap. car, light, in emergency. .90 % Max. Br. Pr. 100,000 cap. car, light, in emergency. .90 % Max. Br. Pr. 50,000 cap. car, light, in service 75 c/o Max. Br. Pr. 100,000 cap. car, light, in service 75 % Max. Br. Pr. 50,000 cap. car, full capacity
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