Join Date: Jun 2006
Bikes: 03 Raleigh Professional (steel)
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Huh? Chains can't "stretch" at all. They are made of metal (or at least mine are).
What y'all are calling "chain stretch" is accumulated wear. Tension adjustment has no effect on wear.
FYI, each full link is 1" long. To check wear, measure 12 links of the tensioned chain, pin center to pin center. Up to 12 1/16" (1/16" of "stretch") is okay. 1/8" is sketchy. Over that and you should start thinking about replacing the small sprocket. There is some controversy about how much wear you should allow. Check the Bicycle Mechanics forum for more info.
Stupidity got us into this mess - why can't it get us out?
- Will Rogers
Last edited by DMF; 11-19-09 at 06:34 PM.