Go Back  Bike Forums > Bike Forums > Mountain Biking
Reload this Page >

9/10/11 speed chainring on 8 speed?

Mountain Biking Mountain biking is one of the fastest growing sports in the world. Check out this forum to discuss the latest tips, tricks, gear and equipment in the world of mountain biking.

9/10/11 speed chainring on 8 speed?

Old 12-15-15, 11:20 AM
  #1  
curtiseddie
Deadrise & Derailleurs
Thread Starter
 
curtiseddie's Avatar
 
Join Date: Sep 2015
Location: O'fallon, MO
Posts: 61

Bikes: Schwinn Moab, Focus Mares AX, Kona Kahuna DL

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
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.
curtiseddie is offline  
Old 12-15-15, 11:43 AM
  #2  
FrozenK
Senior Member
 
Join Date: Jan 2009
Posts: 1,036
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 174 Post(s)
Likes: 0
Liked 1 Time in 1 Post
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.
FrozenK is offline  
Old 12-16-15, 08:38 AM
  #3  
Pompiere
Senior Member
 
Join Date: Nov 2005
Location: NW Ohio
Posts: 2,462

Bikes: 1984 Miyata 310, 1986 Schwinn Sierra, 2011 Jamis Quest, 1980 Peugeot TH8 Tandem, 1992 Performance Parabola, 1987 Ross Mt. Hood, 1988 Schwinn LeTour, 1988 Trek 400T

Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 217 Post(s)
Liked 9 Times in 7 Posts
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.
Pompiere is offline  
Old 12-16-15, 09:08 AM
  #4  
Gallo
Senior Member
 
Gallo's Avatar
 
Join Date: Apr 2012
Location: San Diego CA
Posts: 766

Bikes: 2008 Wilier Motorolio Specialized Stumpjumper Hardtail 1986 Paramount 2014 Pivot Mach 429c

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 40 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
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
Gallo is offline  
Old 12-16-15, 10:26 AM
  #5  
CrippledKonaBoy
Banned.
 
Join Date: Nov 2015
Location: south of the Great Lakes
Posts: 195

Bikes: The Kona

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
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.)
CrippledKonaBoy is offline  
Old 12-16-15, 11:16 AM
  #6  
FrozenK
Senior Member
 
Join Date: Jan 2009
Posts: 1,036
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 174 Post(s)
Likes: 0
Liked 1 Time in 1 Post
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.
FrozenK is offline  
Old 12-16-15, 02:41 PM
  #7  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 41,632

Bikes: 8

Mentioned: 188 Post(s)
Tagged: 0 Thread(s)
Quoted: 6838 Post(s)
Likes: 0
Liked 216 Times in 180 Posts
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 ..
fietsbob is offline  
Old 12-18-15, 04:17 PM
  #8  
MisterK
S'toon trail rider!
 
MisterK's Avatar
 
Join Date: Jul 2009
Location: Saskatoon, SK
Posts: 452

Bikes: 2011 Norco Mountaineer(XC/Trails), 2011 Jamis Commuter1(commuter)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I used a 9spd race face ride xc crank with 8spd with no problems. Ran it as a double with a fd. Worked fine
MisterK is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Gary Fountain
Classic & Vintage
16
07-02-11 09:44 PM
mzeffex
"The 33"-Road Bike Racing
0
01-13-10 08:15 PM
stormchaser
Road Cycling
0
02-02-06 05:37 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.