Care and treatment of carbon

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 · 21.03.2007

Care and treatment of carbonPhoto: Daniel Simon
Plastics, usually under the illustrious name of "carbon", are increasingly replacing metal on bicycles. TOUR lists the most important misconceptions circulating about the black material and shows you tricks for maintaining or restoring its lustre.

Plastics, usually under the illustrious name of "carbon", are increasingly replacing metal on bicycles. TOUR lists the most important misconceptions circulating about the black material and shows you tricks for maintaining or restoring its lustre.

Degree of difficulty: for everyone

You will need:

  • Tool: Screwdriver
  • Excipients: Hard wax, soft cloth, touch-up stick, sandpaper, transparent adhesive film

WARNING:

Carbon components do not deform before they break. If your bike has been involved in a fall or accident, you must examine it carefully. Discolouration, bubbles, ripples or cracks in the surface of components are clear indicators of overloading. Do not simply repair such paint defects, but take a component that has been altered in this way to your dealer so that they can examine it carefully. If in doubt, replacement is always the safe choice.

Misconception 1:
Carbon frames and forks do not corrode

Carbon itself is resistant, that's true. But all metal parts embedded in the plastic can corrode if the surface of the components is not sealed regularly. The material starts to corrode particularly at edges, gaps, recesses and riveted or glued aluminium pull stops.

Misconception 2:
Carbon surfaces are insensitive

The frame and fork are usually made of carbon fibres embedded in an epoxy resin matrix, the surface is occasionally made of resistant, hardened resin; the frame is usually completely painted over. As the paint cannot be cured very hot, it usually adheres poorly. Protect vulnerable areas with clear plastic film.

Misconception 3:
Carbon equals carbon

By no means all components emblazoned with the word "carbon" consist of long carbon fibres embedded in a thermoset plastic. These are often thermoplastic injection-moulded plastics with no or only very short fibres of a few millimetres in length. Silicone spray, often sold under the name "cockpit spray", is suitable for maintaining these mostly unpainted components.
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