Bedienungsanleitung Merida 2008 (Seite 110 von 139) (Englisch)

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28. Special characteristics of carbon

28.1 Carbon - special characteristics

As is the case with all products made of car-

bon composites, also referred to as CFK, with

MERIDA frames, some particularities have to

be paid attention to, as well.

Carbon is extremely strong and durable

with very low weight, making it perfect for

the production of high-performance parts.

However, one of the characteristics of car-

bon also is that the components do not bend

when overstressed though the structure may

already be damaged. If a carbon item has

suffered a heavy impact or undue stress of

any kind, it may – unlike steel or aluminium

parts – not show obvious signs of damage,

like deflections. This should not be taken as

a sign that the part is undamaged, since the

internal carbon fibers may have sustained

serious damage.

After having been overstressed, a pre-dam-

aged carbon part may fail without any previ-

ous warning. This makes it very dangerous

to keep on using the part after an impact

or undue stress. If you continue to use a

damaged bike part, this may lead to acci-

dents with unforeseeable consequences. We

strongly recommend taking the respective

part or – even better – the whole bike to your

MERIDA dealer for examination after an inci-

dent, e.g. a crash.

If necessary, he may contact our service

department in order to clarify open ques-

tions.

Damaged parts made of carbon must never

be repaired. They must be replaced at once!

Make absolutely sure that any damaged

part will never be used again. It should be

destroyed to be certain that further using is

impossible.

Parts made from carbon should under no cir-

cumstances be subjected to excessive heat.

Therefore never paint a carbon part and

cure it by heat. The temperatures required for

enameling or powder-coating will destroy the

component. Do not leave carbon fibre parts

near a source of heat e.g. a radiator or in

your car during hot or sunny weather.

Carbon parts have, like all very light

weight constructions, only a limited

service life. For this reason, change stem

and handlebar at regular intervals as a pre-

ventive measure (every 3 years e.g.), even

if they have not experienced any crashes or

similar.

If your MERIDA carbon frame or

carbon fork makes any cracking

noise or shows any dents, deformations, dis-

colouration, scratches or notches, do not use

the bike until the part has been replaced!

Contact your MERIDA dealer at once. He

will check the part thoroughly!

Make sure all carbon clamping areas

are absolutely free of grease and

other lubricants. Grease would penetrate

the surface of the carbon material, reduc-

ing the coefficient of friction and hence

impairing the stability of the clamping joint.

Greased carbon may never again afford

a safe clamping joint. Please use a special

carbon assembly paste in clamping areas.

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Merida 2008 Seite 110

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