De quoi est fait roue de vélo
A light spoked wheel with a hub on bearings and a tyre.
- Spoke — a pour partie. Spokes are tensioned between the rim and the hub and carry the load.
- Roulement à billes — a pour partie. The wheel hub turns on ball bearings.
- Pneumatic tyre — a pour partie. The tyre softens bumps and improves grip.
- Hub gear — a pour partie. Hubs with gears.
- Inner tube — a pour partie. Inside the tyre is an inner tube: the air pumped into it makes the wheel soft.
- Steel — est fait de. The rim and spokes are steel.
- Vulcanized rubber — est fait de. The tyre is rubber.