Bike Forums - View Single Post - Replacing old chains... upgrade options?

01-29-15 | 07:38 AM

#14

FBinNY

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Joined: Apr 2009

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From: New Rochelle, NY

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

Quote:

Originally Posted by a77impala

I am using a 9 spd chain on my 8 spd compact setup with no trouble at all. Shimano cassette and FSA cranks, chainrings. Deore rd, Sora fd, Tiagra sti. Bike was assembled from parts on hand, chain was new, cassette near new, chainrings used. Hasn't missed a shift in 50 miles city riding.

Yes, a 9s on 8s, or a 10s on 9s are OK since the difference is small. But the OP has a 6s system, and a 9s chain would be fully 1mm or so narrower than original, and that's too much (see chart in post No.8)

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