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Skülly

Does anyone know what the limiting factor of chainring guards is ... i.e. if I fit one that recommends 42t minimum, and I'm using a 40, what will happen? Scrapy chain when shifted to the smallest cog?

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gbj_tester in reply to @Skülly

Scrapy chain when shifted to the smallest cog?

Probably not, but yes, that is eventually the limit. The radius change on a ½" pitch roller chain sprocket is only 2mm per tooth, so it would have to be within a fag paper of touching to start with for 2 teeth to make it fail.

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