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Thread: Campagnolo Cassette Lockring Confusion.

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    Default Campagnolo Cassette Lockring Confusion.

    Iím in the process of getting my teenage sonís bike into running order. He died in 2019 and I got my hands back on his bike and thought Iíd like to ride it a bit, I guess I feel some kind of connection to him by doing this.

    My issue is it has Campagnolo Chorus 10spd running on 9spd wheels. The flange of the cassette lockring is too wide so the chain wonít sit on the 11t cog so I think I need a CS-301 (26mm) lockring?

    What stumped me was when I removed the lockring it appears that I have a 10spd cassette body but Iím using a 9spd lockring? This doesnít seem to be correct?

    3CB52646-B943-47F7-B386-1B1839212706.jpg
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    Riding has to be fun, and part of the fun has to be that youíre not worried about having too much technology on your bike. - Tom Ritchey

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    Default Re: Campagnolo Cassette Lockring Confusion.

    I think that you are correct and Branford Bike is usually a good resource or Campag issues....hope this other info is helpful as well.

    https://branfordbike.com/new-page-1

    https://www.campagnolo.com/media/fil..._10_18_ENG.pdf

    https://clemenzo.com/en/marchisio/lockrings
    rw saunders
    hey, how lucky can one man get.

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    Default Re: Campagnolo Cassette Lockring Confusion.

    It was a running change. There were standard axle freehubs (i.e. 9 speed) made with those splines. You have one. See the last paragraph in the last rectangle of text on the chart you posted. The reality is that the freehub on your wheels was only 9 speed speed when 9 speed was as many as Campagnolo made. Then it was a 9 & 10 speed freehub, then it was a 9, 10 & 11 speed freehub. The big change was when Campagnolo switched to the OS axle and then stopped making replacement freehubs for the standard axle hubs.
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    Default Re: Campagnolo Cassette Lockring Confusion.

    Quote Originally Posted by Sascha Roszak View Post
    I’m in the process of getting my teenage son’s bike into running order. He died in 2019 and I got my hands back on his bike and thought I’d like to ride it a bit, I guess I feel some kind of connection to him by doing this.

    My issue is it has Campagnolo Chorus 10spd running on 9spd wheels. The flange of the cassette lockring is too wide so the chain won’t sit on the 11t cog so I think I need a CS-301 (26mm) lockring?

    What stumped me was when I removed the lockring it appears that I have a 10spd cassette body but I’m using a 9spd lockring? This doesn’t seem to be correct?

    85740192-8288-49B5-B21F-2DE0E06FCBA2.jpg
    You realise that is a 12t cog, right?...

    So you maybe even have a lockring for a 13t cog, and need the lockring for a 12t?

    EDIT: Ignore me - I've just realised that's not the last cog #facepalm


    (P.S. Sorry to hear about your son - I had no idea.)

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    Default Re: Campagnolo Cassette Lockring Confusion.

    I took the 12t off to get a look at the cassette body spline Rich lol.😉
    Riding has to be fun, and part of the fun has to be that youíre not worried about having too much technology on your bike. - Tom Ritchey

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    Default Re: Campagnolo Cassette Lockring Confusion.

    Quote Originally Posted by RichTheRoadie View Post
    (P.S. Sorry to hear about your son - I had no idea.)
    Thanks, I don't really tell everyone about it. I'm still dealing with lot's of trauma and ongoing psychologist visits...I guess I smother myself in cycling and buying bike crap rather than taking drugs or alcohol.
    Riding has to be fun, and part of the fun has to be that youíre not worried about having too much technology on your bike. - Tom Ritchey

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    Default Re: Campagnolo Cassette Lockring Confusion.

    I was just handed this from a friend in a bike shop that never sells Campagnolo…I think this is the one!

    A2FF9114-7C9E-475F-BE6D-8FA8373A37FB.jpg
    Riding has to be fun, and part of the fun has to be that youíre not worried about having too much technology on your bike. - Tom Ritchey

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    Default Re: Campagnolo Cassette Lockring Confusion.

    There is no such thing as 9sp and 10sp campy lockrings. However there are lockrings made for 12t and up starting cog and lockrings made for 11t and up. Miche and Marchisio are others options if you can't find campy branded one.
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    Default Re: Campagnolo Cassette Lockring Confusion.

    Somewhere in here or the Paceline, I remember reading a long time ago from a builder that some classic steel frames might not be able to fit a chain on an 11 tooth next to the dropout because of some dropout designs.
    -Mike
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    Default Re: Campagnolo Cassette Lockring Confusion.

    Quote Originally Posted by sk_tle View Post
    There is no such thing as 9sp and 10sp campy lockrings. However there are lockrings made for 12t and up starting cog and lockrings made for 11t and up. Miche and Marchisio are others options if you can't find campy branded one.
    I'm not trying to be a smart arse but did you read the writing on the locking picture posted above? - 9 speed -

    It ended up not being the required 26mm locking I needed anyway, it was a 27mm.
    Riding has to be fun, and part of the fun has to be that youíre not worried about having too much technology on your bike. - Tom Ritchey

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    Default Re: Campagnolo Cassette Lockring Confusion.





    I went out to my shop to investigate...4 lockrings, 4 different inscriptions and 2 different outer diameters (35mm and 38mm)...never a dull moment.
    rw saunders
    hey, how lucky can one man get.

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    Default Re: Campagnolo Cassette Lockring Confusion.

    Quote Originally Posted by Sascha Roszak View Post
    I'm not trying to be a smart arse but did you read the writing on the locking picture posted above? - 9 speed -

    It ended up not being the required 26mm locking I needed anyway, it was a 27mm.
    What I mean is they are written like that because of year of manufacture, not feature and compatibility. Campagnolo didn't anticipate, at least publicly, upward compatibility. What was a 9 speed hub when campagnolo build it was also a 10 and the 11sp compatible hubs. A lockring made during the 9sp era, marked 9sp and built for a 12t or more starting cog works perfectly fine with a 10 or 11sp cassette with a 12t or higher starting cog. And regardless of what is written on it you need a lockring specifically made for a 11t starting cog, be it marked 9-10-11, campagnolo, miche or marchisio, do not matter. Only the diameter of that area compressing the starting cog matters.
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    Default Re: Campagnolo Cassette Lockring Confusion.

    Quote Originally Posted by mowens View Post
    Somewhere in here or the Paceline, I remember reading a long time ago from a builder that some classic steel frames might not be able to fit a chain on an 11 tooth next to the dropout because of some dropout designs.
    -Mike
    It is not specific to steel frames, just more frequent, but that is true and I think only on 11sp cassettes. Impact some occasionnal neo-retro builds.
    Last edited by sk_tle; 05-12-2021 at 06:18 AM.
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    Default Re: Campagnolo Cassette Lockring Confusion.

    Problem now resolvedÖ

    437214C4-DB3B-4EAA-A165-CFAD104BD574.jpg

    Öand once again photo rotates. 😞
    Riding has to be fun, and part of the fun has to be that youíre not worried about having too much technology on your bike. - Tom Ritchey

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    Default Re: Campagnolo Cassette Lockring Confusion.

    Glad you got this sorted, and I hope the rides go well.

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    Default Re: Campagnolo Cassette Lockring Confusion.

    Quote Originally Posted by 72gmc View Post
    Glad you got this sorted, and I hope the rides go well.
    The cassette in question is from a bike Iím fixing up. It used to be my late teenage sonís bike, it still needs some cleaning up and some pedals plus possibly some new tires too.

    389F1C75-F4DF-461E-A6F9-8771F006F994.jpg
    Riding has to be fun, and part of the fun has to be that youíre not worried about having too much technology on your bike. - Tom Ritchey

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