andrew_s
Legendary Member
- Location
- Gloucester
You seem to have missed Fossyant's point. Does your sprocket have an even number of teeth or an odd number?
When a chain wears, that wear affects only the pin spacing on the inner links. On the outer links the pins are directly fixed in position by the holes in the outer sideplate, which don't move. If a chain is 0.5% worn, successive pin separations are changed by 1%, 0%, 1%, 0%,..., with the 1% on the inner links.
If your sprocket has an even number of teeth, any one tooth will always run on either an inner link or an outer link. with the wear on the teeth matching the wear on the link.
When you remove and replace the wheel, you can refit the chain so that the inner links run on teeth that previously had inner links, in which case the uneven tooth wear continues to build up, or you can replace the chain so that the inner links run on teeth that previously had outer links, in which case the tooth wear starts to even up.
Refit the chain inner link to inner tooth several times, then suddenly change inner link to outer tooth, and there will be a considerable mismatch in the chain/sprocket wear, in which case noise is only to be expected.
As Fossyant suggested, try moving the chain along on the sprocket by one tooth.
