• 02-07-2019
    targnik
    28t Oval CR vs 32t Oval CR??
    To all my fellow Ovalites.

    Any of you gone from 32t to 28t??

    Any drawbacks??

    My FS 29er had a 32 tooth round chainring :spits:

    I've always run Ovals & so, I jumped on a 32 tooth Oval.

    In essence I've jumped up 2 teeth i.e. 32t Oval is 34t at it's widest.

    I'm happy enough, as long as I stay in the 3 largest cogs nb, I don't pedal downhill - Clyde-ism in affect o_0

    So, I'm thinking to utilise more of my cassette & have a real bailout gear 28+50 (12 spd Eagle), I'll give a 28t Oval a go.

    I know a lot of Specialized bikes run 28t chainrings (non oval) on them.

    PS - I know I probably should have gone with the 30 tooth version.

    PSS - Blackspire Snaggletooth 32t Oval CR, currently on mule... I'll get same make - but with 28t ^^

    **Oval-ites Only Need Reply**

    'Born to ride!'
  • 02-08-2019
    mlloyd007
    Yeah, the downside is that the smallest diameter on 28t oval is close to a 26t round cog, and that will likely screw up the antisquat profile of your suspension. I've asked both Pivot and Yeti about this very issue when building up bikes, and was told in both cases not to go below 30t for this reason. Also at the smallest chainring diameter, your chain may get very close to, or rub on your chainstay.
  • 02-08-2019
    mtnbkrmike
    Quote:

    Originally Posted by mlloyd007 View Post
    Yeah, the downside is that the smallest diameter on 28t oval is close to a 26t round cog, and that will likely screw up the antisquat profile of your suspension. I've asked both Pivot and Yeti about this very issue when building up bikes, and was told in both cases not to go below 30t for this reason. Also at the smallest chainring diameter, your chain may get very close to, or rub on your chainstay.

    Re anti-squat, it depends. I replaced the stock 30 tooth ring with a 26 tooth on my daughterís Process, to give her a fighting chance on the ups (with her 42 tooth granny gear). The increased anti-squat has been a bit of a bonus, serving to tame the active bobbing of the linkage on the ups. I havenít heard any complaints about pedal kickback yet, or anything else for that matter.
  • 02-10-2019
    targnik
    Quote:

    Originally Posted by mlloyd007 View Post
    Yeah, the downside is that the smallest diameter on 28t oval is close to a 26t round cog, and that will likely screw up the antisquat profile of your suspension. I've asked both Pivot and Yeti about this very issue when building up bikes, and was told in both cases not to go below 30t for this reason. Also at the smallest chainring diameter, your chain may get very close to, or rub on your chainstay.

    Good points I didn't even consider...

    Fingers X, it clears the chainstay ^^
    Quote:

    Originally Posted by mtnbkrmike View Post
    Re anti-squat, it depends. I replaced the stock 30 tooth ring with a 26 tooth on my daughterís Process, to give her a fighting chance on the ups (with her 42 tooth granny gear). The increased anti-squat has been a bit of a bonus, serving to tame the active bobbing of the linkage on the ups. I havenít heard any complaints about pedal kickback yet, or anything else for that matter.

    Another ride down on by current 32t Oval CR...

    Ride was fine...

    I may keep new ring for when things wear out ^^

    I'll probably go 28t front w/ 11-46 out back.

    Which is comparative to a 32t... 50t split.

    NB, last ride I was still getting over illness & being off bike for 10 days. Today felt like normal transmission had resumed.

    'Born to ride!'