Easton Flatboys: parts? bushing replacement? (x-post from drivetrain)- Mtbr.com
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  1. #1
    MW
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    Easton Flatboys: parts? bushing replacement? (x-post from drivetrain)

    Hi folks. Floated this over in drivetrain but didn't get any responses, so I thought I'd try here.

    Anyone ever rehab a set of Easton Flatboys? I just picked up a (very well) used pair for cheap, but they need some love. They came apart easily enough, the pins are M4x8mm, and the non-crank-side bearings are NSK 686Z (6x13x5). So far, so good.

    But I need new rubber seals and I'd also like to replace the crank-side bushings while I'm at it. Couple of questions here: does Easton sell these seals and/or bushings? or does anyone have the correct bushing dimensions? Also, if I can get my hands on the correct bushings, how do I remove the old ones (since there doesn't appear to be an exposed "lip" that would let me drive them out from the other side)?

    I'm not out much if I can't rebuild them as I'd hoped, but I figured I'd ask. Thanks for any help,

    --Matt

  2. #2
    moaaar shimz
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    I guess you can take them out with an EZ Out, measure them and buy them from McMasterCarr

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    I had the Easton Cully pedals and I bought
    parts for them but i'm not sure where??

    I may have extra needle bearings in my box of crap
    but I don't remember if I replaced the smaller bearing on the
    outside of the pedal??

    I assume the flatboys use the needle bearings too??(on the pedal side closest to the cranks??)
    then the smaller regular bearing on the outside??

    As for the oring I recall just taking one out of my o-ring set kit thingy..that was similar...

    If I have the extra bearings I can give you the part number off of them??
    or you can have them(if you are from USA)
    also do the Flatboys use the really small pins??(diameter wise)
    if so i have a bag of pins you can have too....

  4. #4
    MW
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    Hey, thanks for the reply.

    As far as I can tell, it's a bushing on the crank-side, not a needle bearing. Which is fine, if I could figure out how to remove it (re. previous response: not sure how an ez-out would work here?).

    The seal is this sort of flanged piece:



    Did your Cully's have something similar that you were able to replace with o-rings?

    Outboard bearings are NSK 686Z and pins are plain M4 set screws: both easily had through McMaster-Carr or similar. It's mostly the bushings (and to a lesser extent the seals) that have me flustered.

    --Matt

  5. #5
    moaaar shimz
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    Quote Originally Posted by MW View Post
    Hey, thanks for the reply.

    As far as I can tell, it's a bushing on the crank-side, not a needle bearing. Which is fine, if I could figure out how to remove it (re. previous response: not sure how an ez-out would work here?).

    The seal is this sort of flanged piece:



    Did your Cully's have something similar that you were able to replace with o-rings?

    Outboard bearings are NSK 686Z and pins are plain M4 set screws: both easily had through McMaster-Carr or similar. It's mostly the bushings (and to a lesser extent the seals) that have me flustered.

    --Matt
    A large ez out (bolt extractor) will grip the inside of the bushing. Then you pull it out.

    Imagine this, the bolt being the bushing.

  6. #6
    MW
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    Quote Originally Posted by tacubaya View Post
    A large ez out (bolt extractor) will grip the inside of the bushing. Then you pull it out.
    Interesting. I thought ez-outs were only for threaded applications; I didn't realize they were an option for press-fit. So essentially I'd have to "set" the extractor into the bushing, then clamp the extractor in a vice, then drive the pedal body off the bushing/extractor?

    Possible hiccup here is that the bushing sits a ways inside the pedal body, and I worry that the taper of the ez-out would contact the pedal body before the inside of the bushing? No way to know without trying, I suppose.

    --Matt

  7. #7
    moaaar shimz
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    Quote Originally Posted by MW View Post
    Interesting. I thought ez-outs were only for threaded applications; I didn't realize they were an option for press-fit. So essentially I'd have to "set" the extractor into the bushing, then clamp the extractor in a vice, then drive the pedal body off the bushing/extractor?

    Possible hiccup here is that the bushing sits a ways inside the pedal body, and I worry that the taper of the ez-out would contact the pedal body before the inside of the bushing? No way to know without trying, I suppose.

    --Matt
    Yeah. I don't know how deep is the bushing, but there should be some way to access it allowing the ez-out to grip it.

    This is how Fox removes some stuck shock hardware, same principle:




  8. #8
    MW
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    Quote Originally Posted by tacubaya View Post
    This is how Fox removes some stuck shock hardware, same principle:[/IMG]
    I get it now, though the analogy would be pulling DU bushing from a shock and not the reducers as shown, and I'm doubtful I could pull them by hand. Regardless, this might well be the way.

    --Matt

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