KOIBIKE CARBON COMPOSITE FACTORY

This guide assists cycling beginners in understanding bicycle components, selection, and maintenance via concise explanations, addressing novice uncertainties.​ First, it details Core Drive Components:​ Frame: 3 materials (aluminum alloy for entry-level, steel for stability, carbon fiber for advanced users) and size alignment with height to avoid discomfort.​ Drivetrain (chainring, chain, cassette): Small cassette gears for flat-road acceleration, large ones for climbing.​ Wheel set: 3 tire types (road, mountain, urban) and checks on rim flatness, spoke tension.​ Next, it focuses on Safety Control Components:​ Brakes: V-brakes (simple, dry urban roads) vs. disc brakes (strong, weather-resistant).​ Handlebars: Flat (commuting, upright) vs. drop (road bikes, speed); key rule: "Rear brake first, then front" to prevent tipping.​ Saddle: Width matches hip, height adjusted for 15-30° knee bend at pedal lowest point.​ Then, it outlines Auxiliary Components:​ Ordinary pedals for daily use (clipless pedals need practice).​ Fenders for rain, bike lights (front ≥50 lumens, red flashing rear) for night.​ Baskets/racks (10-20kg load) for carrying items.​ Finally, it offers Beginner Tips:​ Choose bike by purpose (commuting, mountain, road).​ Weekly checks (brakes, chain, tire pressure).​ Seek professional help for issues like brake failure.​ In summary, the guide simplifies bicycle knowledge, providing systematic guidance for beginners’ bike selection, use, and maintenance.