Operation Manual

34
35
4.5 Clamping systems for wheels and saddle post
On our bikes we use the following axle clamping systems for wheel and saddle post attachment:
• Quick-release axles
• Quick-release axle saddle post
• Thru-axles
• Screw clamping
4.6 Materials
4.6.1 Breakdown
For our bike frames we use aluminium alloys and carbon materials. Our brand bikes with carbon frames are
marked with the name “LECTOR” in the type designation. All other bikes are manufactured with an alumini-
um frame.
4.6.2 Information and instructions on the carbon material
WARNING Danger from falls and accidents
Carbon is a modern material in bike and motor vehicle construction. However, carbon parts are sensitive
to damage. Mistakes during assembly or use can result in fractures and hence in dangerous riding situa-
tions, falls, accidents and material damage.
Impact loads that occur if using the bike for other than the designated purpose, or in the case of falls,
accidents and flying stones, can lead to invisible damage in the carbon fabric and/or to delaminations (=
separation of the bonded carbon layers).
Such prior damage together with the forces occurring during operation can cause carbon parts to sud-
denly break and hence result in dangerous riding situations, falls, accidents and material damage.
• Be sure to observe all of the following instructions on the use of carbon parts.
• After accidents or other major mechanical loads not caused by normal bike operation, carbon frames
and parts may no longer be used.
• After a fall you should immediately contact a dealer authorised by the manufacturer and have the parts
concerned sent in to the manufacturer for inspection.
• If you have any questions concerning how to handle carbon parts, please contact your specialist dealer.
He or she will be pleased to advise you.
Carbon is a colloquial expression for carbon fibre-reinforced plastics. This designates a fibre-plastic com-
posite material in which the carbon fibres are embedded in several layers in a plastic matrix.
This matrix consists of thermosetting plastics (epoxy resin). The primary functions of the matrix material are
to transmit and distribute the occurring forces and to fix the fibres.
As with all fibre composite materials, the tensile strength is significantly higher than the strength transverse
to the fibre direction. The carbon fibres are therefore arranged in multiple directions in order to be able to
meet all the occurring forces.
4.6.2.1 Information on the frame construction
Exact analyses and realistic simulations of the forces occurring in the frame have enabled the fibre orienta-
tions in the different areas, such as in the pedal bearings or at the control tube, to be designed more
efficiently.
These high-end products are produced manually. Differences can therefore occur in the finish, but these are
not grounds for complaint.