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  1. #1
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    Surly Stainless Steel Chain Ring 32t + 9spd = tight fit

    Hi,
    I just got one of these on amazon (niagra cycle works)
    Surly Stainless Steel Chain Ring 32t, 104BCD,4-Bolt
    And plan on running it on a transition blindside in 1x9 config with a chain guide

    After installing on a saint crank w/ decent chain line and appropriate chain length.
    I noticed that it was riding up on the front sprocket at some points (the sides of the teeth) on the edges of the inner plates of the chain (not the rollers)
    Using a shimano 9spd chain (very new)
    I was hoping it would wear in quickly (pedalled around the block a few times, getting chainsuck and marking up the frame)

    Have other people had success with 9 (and even 10) speed setups? and break in period
    I'm assuming the wear will be both on the chain and front ring
    Will there be any adverse affects on the cassette in the rear? (basically the openings in the chain will get wider)

    Or should I jut get an alum ring (or other steel one) with a narrower profile?

    Thanks,
    Gideon in San Francisco


    I searched on this forum for Surly Stainles
    http://forums.mtbr.com/search.php?searchid=10886051

    As well as Surly's site
    http://surlybikes.com/parts/stainless_steel_chainrings/
    Our 94bcd,104bcd and 110bcd x 34/35/36t chainrings are made with a 2.2-2.3mm thick stock plate and work best with 5-8 speed chains. Many folks are using these on 9 speed drivetrains but this can often results in a "tight fit" right out of the box (This will loosen up and shifting should improve after the chain breaks in). The 110bcd 38-50t and all 130bcd chainrings are machine finished to have a 2.1mm tooth thichness and thus work fine with 9 spd chains.

    Aebike says this
    http://aebike.com/page.cfm?PageID=30...ils&sku=CR4193
    Use of Surly rings with 9 and 10 speed chains will have a tight fit and require a short break in period

  2. #2
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    lots of ppl chiming in

    I figured it out
    The old chain that I got w the bike (shimano dont know version) has issues
    Once I switched to a new sram pc 991 cross step, there were no issues

  3. #3
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    I also had problems with the 9 speed chain on the Surly SS chainring. In addition to the chain being too tight, I found the chainring teeth were often needing to be straitened after the chain, chainring and a Pauls chainkeeper wedging together during rough riding. I pitched the Surly and went with an aluminum Salsa ring and all is much better.

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