Thread: How do I measure wear on a chainring or cassette cog?
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Old 12-17-15, 04:45 PM
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Reynolds 
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Originally Posted by fietsbob
Rohloff cog wear gage https://jet.com/product/detail/93615...YtVxoCrn3w_wcB Or Via QBP @ your LBS
they made chains before they started making the 14 speed Hubs, https://www.youtube.com/watch?v=Lb63caDLcN0
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.
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