Test Republic Pumper
今年1月13日,一个共和国卡车,模型19, 2 1/2-ton chassis, fitted with standard triple combination fire apparatus, successfully passed the fire truck test of the National Board of Fire Underwriters. This test is usually held yearly, and is so stiff that commercial truck manufacturers have largely passed it up. The testing was supervised by the chief engineer of the National Board and took place at the 54th Street pier on the Hudson River. The truck pumped water continuously for 13 1/2 hours, and at the conclusion of the test the official report says the motor and pump at the end of the test were quite cool and in satisfactory condition, without vibration or pulsations.
The test is divided into three main parts, although readings were taken every five minutes as to pressure, vacuum of pump and nozzle pressure. The first test was completed in six hours, and showed a new pump pressure of 120 pounds and an average motor speed of 1,350 R. P. M. At the end of nine hours the second test was completed, the net pump pressure being 200 pounds at 1,625 R. P. M.—the pump being geared to the transmission at second speed. The third test was completed with twelve hours’ of continuous running, and showed a pump pressure of 250 pounds, at pumping capacity of one-third full capacity at 1,250 R. P. M. The pumping was continued an hour and a half after the completion of the tests for good measure.
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