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what size chain do I want to run with this cog?

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what size chain do I want to run with this cog?

Old 03-23-12, 04:53 PM
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what size chain do I want to run with this cog?

https://imgur.com/Nz9e3

muchas gracias
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Old 03-23-12, 05:20 PM
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anything except a 10 speed chain
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Old 03-23-12, 05:38 PM
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No one can tell from that photo. But you can tell.

Take a 3/32" chain and lay it over the cog, if it fits on the cog do the same thing with the chainring. If it doesn't fit on BOTH, use a 1/8" chain.
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Old 03-23-12, 05:47 PM
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It looks like a 3/32" cog to these eyes.
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Old 03-23-12, 06:04 PM
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Thanks gents. I had an 8 speed chain laying around and it appears to work. I did however stop at the bike store earlier thinking it was a 3/32 cog, and grabbed a 3/32 chain, which I can now return. So an 1/8 chain will only work with an 1/8 cog, but 3/32 is universal with the exception of a 10 speed?
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Old 03-23-12, 06:05 PM
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Or perhaps I have that backwards
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Old 03-23-12, 06:13 PM
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1/8" chain will work on either a 1/8" or 3/32" cog & chainring.

3/32" chain will only work on 3/32" components.
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