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General Category >> Rubber Side Down! >> Cam Chain wear length clarification
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Message started by ocdave on 12/06/10 at 12:44:38

Title: Cam Chain wear length clarification
Post by ocdave on 12/06/10 at 12:44:38

On some searches here I found that the cam chain wear limit was noted as:

Chain Stretch: SSM states the limit for 21 pins center to center is 128.8mm (5.07")
My manual I downloaded describes the wear limit with the same measurement but at a distance of "20 pitch length"

Is 21 pins center to center the same as 20 pitch length?

Title: Re: Cam Chain wear length clarification
Post by verslagen1 on 12/06/10 at 13:43:41

Just measure it against 5".
There's probably some technical definition somewhere, but it don't matter. If you have the incorrect number of pitches over 5+ inches, the chain will have a gap in it.

Title: Re: Cam Chain wear length clarification
Post by ocdave on 12/06/10 at 14:20:55

392A3D3C232E282A217E4F0 wrote:

Just measure it against 5".
There's probably some technical definition somewhere, but it don't matter. If you have the incorrect number of pitches over 5+ inches, the chain will have a gap in it.

Thank you, looks like I am within spec. I'm hoping the tensioner is also. I didn't know to check prior to tearing the top end down.