“…Bedri reported that the system did not always function properly under tractor noise and vibration conditions. Chung (1983) used the same tractor Instrumented by Bedri (1982) and developed a new instrumentation system with more capability. In addition to the three transducers already attached, he improved the system by adding a drawbar pull transducer, two axle torque transducers, a signal conditioner, a tape recorder, and an AIM 65 microcomputer.…”