Handlebar fatigue- Mtbr.com
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  1. #1
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    Handlebar fatigue

    I was riding today thinking about the forces on my handlebar (Easton EA70 aluminum) and was wondering does singlespeeding decrease the lifespan of aluminum handlebars (compared to geared riding) because of the torque we put on them while climbing? Just looking for opinions. Thanks

  2. #2
    SSasquatch
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    Great! Another bike part fatigue issue for me to worry about.

  3. #3
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    From my totally uninformed position, I'd say no. I mean Not every gearie XC rider sits and spins on the climbs. Some hammer just as hard as us. I can't imagine an SS rider torquing so hard on the bar that it was at risk of failure. And anyway, Keith Bontrager says to replace your alloy bar every couple of years or so. Maybe someone more informed will add to this discussion.

  4. #4
    blame me for missed rides
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    yes. at a higher average load, the number of cycles an aluminum part can take before it fails decreases.

    it might not be anything you need to worry because the number might still be large enough to last until the day your upgrade itch gets the better of you.

  5. #5
    local trails rider
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    Any single speeders out there, whose bar fractured / snapped / bent during riding?

  6. #6
    Cars Are Evil
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    I'd worry more about the shocks from hard riding than from pulling on them.

    And yes, I've heard many recommendations to replace them every couple years. Probably more if you ride hard/very often. New bars are a lot cheaper than dentures!

  7. #7
    surlysoul
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    Quote Originally Posted by Vermont29er
    I'd worry more about the shocks from hard riding than from pulling on them.

    And yes, I've heard many recommendations to replace them every couple years. Probably more if you ride hard/very often. New bars are a lot cheaper than dentures!
    This might be true but dentures would be more entertaining at a party.

  8. #8
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    I am not going to worry about it . I will just go get some new ones

  9. #9
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    Now a friend of mine broke his handlebar through pulling too hard while hammering uphill. This bar was 6 months old so I guess it wasn't really due to fatique.

    But what about stem fatique?

    Fork crown and steerer fatique?

  10. #10
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    Quote Originally Posted by Pooh Bear
    But what about stem fatique?

    Fork crown and steerer fatique?
    I'd call these much less likely. I mean, I suppose stems break, but I've never seen it. Stems usually have more material per unit of volume than bars (density). They are much shorter and usually have comparable weight. Also, handlebars are stressed at the ends which are much farther apart than the stressors acting on the stem. And as for forks breaking, unless you are jumping or a big hack or routinely plow into walls, I wouldn't worry about it any more than on a gearie.

  11. #11
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    OK, so whats better, aluminum or carbon?

  12. #12
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    Sorry, double post...
    Last edited by labrat73; 08-29-2006 at 01:43 PM.

  13. #13
    bicyclist
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    Quote Originally Posted by labrat73
    OK, so whats better, aluminum or carbon?
    Trick question.
    Steel.
    People who really know what happened aren't talking. And the people who don't have a clue, you can't shut them up.
    Tom Waits

  14. #14
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    Quote Originally Posted by labrat73
    OK, so whats better, aluminum or carbon?
    I'd go with alu stem and a carbon bar, or maybe alu both.

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