Sixteen field tests were performed by Wyle Laboratories, Colorado Springs to measure the performance characteristics of a Type I freight car truck. Reel 7 contains test run 7. (When more than one try was required to obtain a successful run it is denoted with a letter suffix.) A pair of ASF ride control trucks were placed under an empty 100-ton open hopper carbody. New AAR 1/20 wheel profiles were used. The object of the test was to provide performance data during curve negotiation. The test was performed on January 24. 1980 on Union Pacific track near Las Vegas, Nevada. Ninety-six channels of data were acquired to measure car speed, automatic location detection, lateral/vertical wheel-rail forces, wheel/rail angle of attack, axle rotation position, accelerations and displacements at critical points on the truck and carbody. This test was made over mainline tangent bolted jointed rail between Arden and Boulder Junction near Las Vegas, Nevada. The tests were run in a downhill direction with a grade of approximatly 0.9%. The tests were conducted in 5 mph steps between 79 and 40 mph. At the completion of the test run, a controlled sequence of train line brake application was used to bring the consist to a stop.
Truck Design Optimization Project (TDOP) Phase II Type I Truck Performance Test, Test Run 007
1980
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Report
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English