WHAT IS CARBON FIBRE?
Carbon fibres are polymers and are often referred to as graphite fibres. It is a very solid material but is very lightweight, too. Carbon fibre is 5 times stronger than steel and 2 times stiffer than steel. Although carbon fibre is stronger and stiffer than steel, it is lighter than steel; making it the perfect material for many parts of production.
Carbon fibre is made of thin, solid and crystalline carbon filaments used to strengthen the material. Carbon fibre can be thinner than a human hair strand and gets its power when woven like thread together. It can then be woven together to form cloth and carbon fibre can be laid over a mould and coated in resin or plastic if needed to take a permanent shape.
What’s more, carbon fibre is strong:
● It’s high in rigidity
● Is high in tensile resistance
● Has a low weight by strength ratio
● Is high in chemical resistance
● Is heat resistant to high temperature
● Has a low thermal range
For this reason, carbon fibre is very common in many industries, such as aerospace, automotive, military, and recreational.
Its carbon fibre tub chassis is at the core of any Koenigsegg vehicle.
Image Credits: Koenigsegg
Carbonfibre chassisImage Credits: Koenigsegg
The Koenigsegg chassis is a case of do-it-once-do-it-properly, with main elements of the chassis that we still use today remaining true to the initial concept of Christian von Koenigsegg.
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Image Credits: Koenigsegg
For improved crash safety, the Koenigsegg chassis consists of a pre-impregnated carbon-fibre framework with an aluminium honeycomb core structure (the same as used in Formula 1) Inside the hollow box parts around the rear and along the right and left sills, the aluminium fuel tank is built into the tub frame. This provides maximum protection to the fuel tank and makes the best weight distribution possible in combination with the most efficient packaging.
The Koenigsegg carbon-fibre tub frame has 65,000 Nm per degree of torsional rigidity, more than any other vehicle in the world, present or past, which is impressive because the car is also a roadster with a detachable roof panel that can be stowed. What does a real-world calculation of this kind mean?
In basic terms, this means that when under strain, the car is very, very resistant to bending or flexing (e.g. at 2 g’s in a corner).
A rigid chassis allows a smoother suspension and a more relaxed ride compared to a less rigid chassis. It gives you more flexibility as there is no need to adjust the suspension to compensate for the flex of the frame. Our suspension engineers will focus more on vehicle dynamics with a stiffer frame, regulating the car’s ride and reaction and less on compensating for fairly weak frame resonance.