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Can I use 11spd cranksets for 8-10spds?

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Can I use 11spd cranksets for 8-10spds?

Old 11-14-18, 02:21 AM
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Can I use 11spd cranksets for 8-10spds?

Im currently running 8spd Dura Ace everything but wanted to 'upgrade' to the newer Dura Ace 9100 crankset. Will it still work??
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Old 11-14-18, 04:38 AM
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Yes, cranksets aren’t very fussy.

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Old 11-14-18, 06:55 AM
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8 speed chain might be a bit wider and rub sometimes. Ive used 11 speed era cranks with 10 speed components fine.
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Old 11-14-18, 08:54 AM
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The reverse, 8-speed chainrings with 10-speed chain might let your chain fall in between the chainrings. My guess is , like @Narhay already said, that the chain might rub sometimes.
Chains, higher than 10-speed (11 and 12) can only fit on the corresponding chainrings.

You should be fine.
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Old 11-18-18, 09:23 AM
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You will certainly save a ton of weight from that area of the bike, and get a great crankset.

If you're running a DA 8-sp LEFT STI shifter, you may have to really tweak that shift from the big ring to the small and back again. It wasn't that good with 8-sp, much less moving to a more precise situation. It may even shift better.

I'm not sure I'd use an 8-sp chain with that crankset, but it may work just fine.
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Old 11-18-18, 10:23 AM
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Originally Posted by Narhay
8 speed chain might be a bit wider and rub sometimes.
Originally Posted by JaccoW
The reverse, 8-speed chainrings with 10-speed chain might let your chain fall in between the chainrings. <snip> Chains, higher than 10-speed (11 and 12) can only fit on the corresponding chainrings.
Bicycle chains from 6sp to 11sp all have the same inner width, i.e. the distance between the sideplates. What varies in those chains is the outer width - as the number of gears increases the thickness of the sideplates decreases. I found conflicting info when I researched this before with sources stating that the difference from a 6sp chain to an 11sp chain was between 1.5-2.2mm (Park Tool says a 6sp chain is 7mm wide and an 11sp chain is 5.5mm while Bike Gremlin says 7.8 and 5.6 respectively). Since that distance is halved due the sprockets/chainrings riding in the middle of the chain there is effectively around a 1mm difference. The only place that difference really matters is on the freewheel/cassette.
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Old 11-18-18, 04:25 PM
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Thanks for the info, was wondering this as well.

Any thoughts on 8/9 speed chains on 11 speed rear derailleur systems, are the chains too wide for the rails
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Old 11-18-18, 04:31 PM
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Not long ago I tried an 8 speed chain with a 9 speed cassette and the result was not so good. It shifted okay on some cogs but not all and it was noisy. Just not enough room in between the 9 speed cogs, or so it looked to me. Changed to a 9 speed chain and all was good.
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Old 11-18-18, 05:01 PM
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9 speed chain on 7 or 8 though works great
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