In this thesis, we investigated the operational properties of a prototype composite carbon fiber chainring. A literature review is presented on the materials and processes used in the manufacturing process. In addition to the theoretical foundations of composites, we described the materials used for previously used component materials, their strength requirements, and the operation of a bicycle drivetrain. The manufacturing process of a composite plate using autoclave curing and the process of precision milling of the chainring teeth are described. The chainring was tested under real-world conditions, with a total of 4000 km being cycled. Before and during testing, we examined the sliding surface and tooth profiles of the chainring at selected points using a digital microscope at 30x and 150x magnification, measuring the flank wear and wear volume. The results indicate low wear, confirming the suitability for use and further development. We also found a 15 % quieter chain engagement compared to an aluminum chainring. In conclusion, we assessed the suitability for use and further development of the composite chainring and provided new starting points for further improvement of the chainring with purer, high-strength carbon fibers and improved resin variantions.
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