When do i have to change the chain?

The main brands of tools for bike have a meter stretch of the chain, however if you have a meter stick can get to know if you’ve time for a change. You have to measure the perfectly stretched chain between 21 pins and must measure 254 mm. If you measure 255 mm and has lengthened 1 mm, which is the elongation defines us that it is time to change the chain.


Regarding the change of plates and pinions , there is no exact rule since its wear depends greatly stretch the chain but also on the conditions of use, cleaning the chain, proper lubrication … Substituting the chain every 1500 km ensuring that has not been stretched 1 mm, the use of these will extend around 3-4 chain changes.

change the chain

If jumps are seen when mounting the new chain, ie the chain slides on the pinion is selected, it will be time to change it. It may also occur with the dishes. A clear indicator is the “sharp” teeth: if they have lost the form of “volcano” with the rather flat end, adopting a form of sharp “spike” is a sign that the slopes are worn and at Thus the chain will not be subject, requiring a change.


The strings have a highly variable life depending on conditions of use or the same quality of materials. There is a fixed parameter for exact mileage of your efficiency, so it is best to measure wear to know when to replace it. It would be best to have measured or measuring a new chain and check that, with use, has not been extended more than 1 millimeter per 10-pin link : this can also be controlled by placing a gauge inside of these links and checking that the measure is not higher than set point manufacturer.


However it is not necessary to compare with a new chain, as there is a standard measure for the chain links: . the maximum extent of use are 132.60 mm Above that dimension The links do not rely on the valley bottom of carved crowns and tend to wear down the tips. If not replaced in time the chain also have to change course and pine nuts. Another alternative is to use ammeter chain , a fixed parts or pattern makers have bike tools in their catalogs.