Correct Ultegra Chain
10-08-19, 06:50 PM
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Correct Ultegra Chain
I'm about to install an Ultegra CS-R8000 11-32 cassette on a bike that has 52-36 chain rings. Is the CN-HG701-11 with 116 links the correct chain? Apparently there's also a 126 link version available and I want to be sure I have the correct part.
Thanks,
Robert
Thanks,
Robert
Last edited by Robert A; 10-08-19 at 06:57 PM.
10-08-19, 07:50 PM
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Are they the same price? if so they just get the bigger one, you will be breaking it to get the correct size so
10-08-19, 07:52 PM
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Count the number of links on your current chain.
10-09-19, 06:40 AM
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Chainstay length matters too.
10-09-19, 10:42 PM
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That 126 link chain is a specialty item for bikes that don’t have normal road bike proportions.
FWIW, if your old cassette was an 11-28T and you have the shortcage SS derailleur, you might need a GS derailleur to take up all the slack in the small chainring/small cog position.
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10-10-19, 05:57 AM
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He was referencing chain wrap for the small/small combo. If both cassettes start with the same 11t cog, the small/small doesn't change.
10-10-19, 07:38 AM
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Yes, but if the chain is a little longer to accommodate the larger rear cog, does it create additional slack in the small/small combo that might be a concern?
10-10-19, 08:07 AM
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Ah. Dunno. The math is easy, though - look up the RD capacity and add the difference between the chainrings to the difference of the largest/smallest cassette cogs. If it's close, I personally wouldn't worry about it - I'm not in the habit of running anywhere near the small/small. If you do find yourself in that combo... for whatever reason... then get the longer cage RD.
