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 maximum of 5 mm. For a more precise reading you can buy a chain measurement gauge in your bike 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 SRAM with smoothly rounded edges.They also shift gears very well.
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.
HP VELOTECHNIK delivers spare chains by the meter via your dealer. For this purpose please indicate the exact length of your chain or order 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.
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 riveting (ROHLOFF revolver).A poorly joined chain may break, you can come off the pedals and fall. If you are in doubt please have adjustments of the chain length or the changing of the chain be done by your bicycle mechanic.
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 SRAM (power links). Every time you change the chain you also have to mount a new power link.
Maintenance and care
HPVelotechnik 37