Experimental Comparison of the Material Properties of Original and Aftermarket Gears

Gear wear is the main factor affecting their performance and service life. In addition to the accuracy of production, the quality of the material from which the gears are made also depends on the degree of wear. The article compares the material properties of gears of JAWA motorcycle transmissions. In addition to the original gears, produced at that time in Czechoslovakia, the market also offers gears that are produced today, originally from the Czech Republic and Taiwan. Since the only comparable indicator is their price difference, the question arose whether the new variants can compete with the original part in terms of quality of workmanship. For this finding, the gears were subjected to wear tests and determination of the hardness of the material with the devices intended for this. In this way, valuable data will be obtained that will contribute to a better understanding of the performance and lifetime of these components. The quality of workmanship as well as the price are factors that should always be considered before the final selection of the item.