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Maintenance and care
37
HP
Velotechnik
Changing the chain
The chain is one of the parts of the bike that
will wear out.This shows in a stretching of the
chain.Worn out chains do not fit the sprok-
kets and chain rings anymore and wear them
away very quickly.
Check the chain regularly for lengthening. For
this purpose try to remove the chain from the
chain ring.The chain may come off to a maxi-
mum of 5 mm. For a more precise reading you
can buy a chain measurement gauge in your bi-
ke shop that you simply put into the chain.
Only use chains that are suitable for the gear
system of your bike. Otherwise a precise gear
shifting is not guaranteed any more. Please
consult your dealer on this topic. He will also
assist you in checking your sprockets and chain
rings.A new chain does not fit a worn sprok-
ket or chain ring.We recommend chains from
S
RAM
with smoothly rounded edges.They also
shift gears very well.
HP V
ELOTECHNIK delivers spare chains by the
meter via your dealer. For this purpose please
indicate the exact length of your chain or or-
der it a little bit longer if you want to be sure
it fits.You will need approx. 3,8 m of chain.
The chain length has to be fitted so that the
arm of the derailleur is not fully stretched
when you shift onto the big chain ring in the
front and the big rear sprocket.The derailleur
must be able to compensate a tightening of
the chain by 4 cm. Please see also the manual
of the derailleur manufacturer on the choice
of the correct chain length.
See that the joining link is not bigger in size
than the other chain links to avoid irregular
chain sounds.We recommend the joining links
by S
RAM (power links). Every time you change
the chain you also have to mount a new po-
wer link.
Caution! When you change the chain take
care that the new chain does not show any
sharp edges or burrs.Very thin racing chains
are also not suitable since they wear the
chain tubes and the chain roller much faster.
Caution! The chain has to be closed with a
special joining link or a chain riveting tool
that expands the ends of the rivet while ri-
veting (ROHLOFF revolver).A poorly joined
chain may break, you can come off the pe-
dals and fall. If you are in doubt please have
adjustments of the chain length or the chan-
ging of the chain be done by your bicycle
mechanic.