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9/10/11 speed chainring on 8 speed?

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9/10/11 speed chainring on 8 speed?

Old 12-15-15, 11:20 AM
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9/10/11 speed chainring on 8 speed?

I have an 1999 Schwinn Moab that I want to make 1X. Can I use the Race Face Single Narrow Wide Chainring on my 8 speed?

The MRP Podium Chainring is the only 8 speed chainring I could find and the smallest tooth count is 36 (I want 32 or 34).

**I attempted to provide a link to each of these chainrings, but they wouldn't work**

Before anyone says, "just by a new bike," I am, but must save up to accomplish that. So I'm doing a little modifications to make the Schwinn more to my liking until then.

Last edited by curtiseddie; 12-15-15 at 11:25 AM.
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Old 12-15-15, 11:43 AM
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I think you can. The difference between an 8 and a 9-10-11 speed chain is the thickness of the chain, that is the chain plates are thinner but the space between plates js the same. So it should work.
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Old 12-16-15, 08:38 AM
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As I understand 9-10-11 speed spacing, the cog spacing in the cassette is narrower to squeeze all of them in without making the cassette too wide. That makes a narrower chain necessary so the side plates don't rub the cogs. That, in turn means the chain ring spacing on the cranks must be narrower, so the chain doesn't get caught between the chain rings.

For a single chain ring, I don't think it makes a difference.
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Old 12-16-15, 09:08 AM
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I am not sure of the answer and would contact Race Face and ask them. I suspect the answer is no and the front cog should be matched to the correct chain width. My guess is you are stuck with the 36 if that is the smallest you can find
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Old 12-16-15, 10:26 AM
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You're good; just make sure you don't have ANY slack. Make sure the chain is sized right.

In case you haven't done it before: without threading the chain through the rear derailleur, wrap the chain around the chainring and the biggest cog on back, and mark the chain where the one end meets the rest of the chain. Leave ONE extra link, and break the chain at that point.

If you're running a Shimano RD, be sure the tension screw on the back of it is run in as far as needed. If SRAM, you'll have plenty of chain tension.

What you're dealing with is a chainring that's a little narrower than the original 8-speed ring(s), which means it CAN slip side-to-side a tiny bit, generally not enough to fall off, though.

(And NO, the 9/10/11 chains aren't the same interior gap with just narrower plates; thinner rings/cogs as well as closer spacing, so the entire chain is narrower. If the ID was the same, there'd be no need for the different chains.)
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Old 12-16-15, 11:16 AM
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Well, I'll be damned Wipperman does list the inner width of their 9, 10, and 11 speed chains as 11/128" and not 3/32". Explains why people using a 9 speed chain on 8 speed rings said they fit tight at first.

But it seems like outer width is still what mandates having different chains given that 9, 10, and 11 speed share inner width dimensions (as do 7 and 8 speed)

Either way, the OP can certainly use a Race Face NW ring. In theory he won't get as good retention as he would with a 9-10-11 speed chain but I bet it will work good enough.
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Old 12-16-15, 02:41 PM
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As the roller stays at 11/128 but the over all width has to get thinner .. the steel in the side plates is made thinner.

the bushing between the pin and the Roller is Made from the steel pushed in to make the hole on the inner link
so It is thinner too ..
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Old 12-18-15, 04:17 PM
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I used a 9spd race face ride xc crank with 8spd with no problems. Ran it as a double with a fd. Worked fine
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