Standard Bicycle frame 2D Schematic with Chain Drive System

This schematic depicts a standard bicycle in side profile view, showcasing the primary structural and mechanical components. The drawing includes a diamond-shaped frame with top tube, down tube, seat tube, chain stays, and seat stays. Both wheels feature standard wire-spoke construction with visible hubs and rims approximately 26 inches in diameter. The drivetrain consists of a chainring, pedal crank assembly, and chain mechanism connected to the rear wheel hub. The steering system includes a basic handlebar assembly and front fork. The simplified 2D wire-frame representation uses primarily arcs and lines to define the bicycle’s geometry, making it suitable for manufacturing reference or modification. Notable is the efficient use of minimal geometric entities to accurately represent the functional proportions; the bottom bracket height and wheelbase dimensions follow standard bicycle ergonomics for proper rider positioning and handling characteristics.