De quoi est fait bicyclette
A two-wheeled machine with a pedal-driven chain to the rear wheel; the modern layout is Starley’s “safety bicycle”.
- Cadre de vélo — a pour partie. The frame ties all the units together and carries the rider.
- Roue de vélo — a pour partie. Two wheels: the front one steers, the rear one drives.
- Transmission de vélo — a pour partie. The drivetrain transfers the force of the legs to the rear wheel — the main difference from a kick scooter.
- Handlebar — a pour partie. The handlebar turns the front wheel and helps keep balance.
- Frein de vélo — a pour partie. Brakes stop the bicycle.
- Saddle — a pour partie. The bicycle saddle took its name from the horse saddle.
- Éclairage de vélo — a pour partie. A lamp.
- Fourche suspendue — a pour partie. On mountain bikes a suspension fork absorbs bumps.
- Pedal — a pour partie. You push the pedals with your feet — that is what moves the bike.
- Roulement à billes — a pour partie. Ball bearings in the hubs and bottom bracket let the wheels and pedals spin easily.
- Moment cinétique — utilise. The spinning wheels and the steering geometry help keep balance.
- Steel — est fait de. The frame is steel tubes.