Bicycle Drivetrain Diagram - Mechanical Components Explained #312477 (License: Personal Use)

This black-and-white technical illustration depicts the core mechanical elements of a bicycle drivetrain: dual chainrings, a multi-speed cassette, a rear derailleur with jockey wheels, and a rear wheel hub. Fine linework emphasizes gear teeth, chain path, and structural linkages, suggesting it was created for engineering study or maintenance training. The “OLDAY” label on the derailleur hints at a vintage or custom component design.

Used in cycling repair guides, mechanical engineering education, or DIY bike maintenance tutorials; targets users seeking to understand gear systems, troubleshoot shifting issues, or visualize component relationships before disassembly.