RIOT chainstay flex, kinda freaky.- Mtbr.com
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  1. #1
    Oaktown Honkey on Strava
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    RIOT chainstay flex, kinda freaky.

    ...and then there were 7. I just logged in to post this, and only 7 of us live! So sad. Anyhow, I was packing my bike yesterday for Bikeflights, and I noticed when I zip tied my right crank to the chainstay, i could easily flex the solid aluminum by grabbing both crank and chainstay with my hand. I was grabbing most forward part of stay/crank. It was really weird. Maybe it is stiffer when I put rear wheel back in. I will see next week, when I arrive to where my Riot is. Thoughts?

  2. #2
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    Try that on just about any bike; you're grabbing a 17-18 inch lever in most cases and flexing a well or a joke of some sort at the other end. Fractions of an inch deflection at the dropout equate to be pretty small strains at the fixed end.

  3. #3
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    Quote Originally Posted by hoolie View Post
    ...and then there were 7. I just logged in to post this, and only 7 of us live! So sad. Anyhow, I was packing my bike yesterday for Bikeflights, and I noticed when I zip tied my right crank to the chainstay, i could easily flex the solid aluminum by grabbing both crank and chainstay with my hand. I was grabbing most forward part of stay/crank. It was really weird. Maybe it is stiffer when I put rear wheel back in. I will see next week, when I arrive to where my Riot is. Thoughts?
    It's why should put something in there when shipping a frame to keep the rear from getting bent. It's designed as a system, flex without a wheel doesn't really mean anything.
    Ripley LS v3
    OG Ripley v2 handed down to son

  4. #4
    Not a role model
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    Here's something that might change your perspective on flex.


    - Frame flex - are stiffer bikes more efficient

    https://www.youtube.com/watch?v=97t7Xj_iBv0
    - Compliant mechanisms

    My take-away: if it's not self-destructing, what else could the flex be doing that's bad?

  5. #5
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    Must be a 29er thing...

    Just to stoke old flames

    My Balance stays will flex if I hold one them and violently pull on the wheel. I don't think it's much of issue as my bike feels great.

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