Old 12-17-15, 04:50 PM
  #20  
FBinNY 
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Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

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Originally Posted by Reynolds
I made a copy of that tool (it's very simple) and found cogs have to be really worn with hook - shaped teeth to be considered worn out by the tool.
Yes, because that's consistent with the intended purpose of the tool, which is to detect sprockets worn to the hook profile bad enough to sang and cause chain suck.
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