. Brake tests; a report of a series of road tests of brakes on passenger equipment cars made at Absecon, New Jersey, in 1913 . time of transmission of quick action with theUC pneumatic equipment is practically the same as that with thePM equipment. It was not thought of sufficient importance to tryout any of these valves so modified in the series of tests under discus-sion. But the universal valves being supplied for cars going into ser-vice at the present time are improved in this particular and the cyl-inder cards shown in Figs. 55A illustrate the results obtained with thisimproved valve in
. Brake tests; a report of a series of road tests of brakes on passenger equipment cars made at Absecon, New Jersey, in 1913 . time of transmission of quick action with theUC pneumatic equipment is practically the same as that with thePM equipment. It was not thought of sufficient importance to tryout any of these valves so modified in the series of tests under discus-sion. But the universal valves being supplied for cars going into ser-vice at the present time are improved in this particular and the cyl-inder cards shown in Figs. 55A illustrate the results obtained with thisimproved valve in rack tests. Considering the improvement in thetime of transmission of quick action indicated by these cards the stopswould be improved correspondingly. 195. The quick rise of cylinder pressure and the high emergencypressure obtained with the UC pneumatic equipment is effective in pro-ducing a materially shorter stop, namely, from 200 to 250 feet shorterthan with the PM equipment. (Fig. 93.) For a discussion of theeffect of the complete pneumatic equipment on the smoothness oflow speed (10 ) stops, see Par. 426. 90. Fig. 54. BRAKE CYLINDER PRESSURE, UC PNEUMATIC EQUIPMENT, HAVING PM FEATURES action is similar to that shown on Fig. 53, PM equipment, which this form of the UC equipment was designed to duplicate. 91
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