An Inexpensive Method of Instrumenting Torsional Vibration 630104

The use of conventional torsional vibration measuring equipment on single cylinder engines in the below 2 hp range is discussed. Disadvantages of this measuring equipment are outlined. Since this equipment has low voltage output, it is especially susceptible to noise which may result from random electromagnetic fields, or random wave forms which result from normal cycle-to-cycle variations. An illustration of a new system is presented which eliminates these defects. This method utilizes a high voltage output signal and is composed of inexpensive mechanical-electrical stock parts and components.


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