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  1. #1
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    Broken kona Operator..anyone else????

    This was a 2012 operator ridden by a smooth expert rider weighing approx. 140 pounds. yikes !!!!
    Attached Thumbnails Attached Thumbnails Broken kona Operator..anyone else????-kona.jpg  

    the trick is ENJOYING YOUR LIFE EACH DAY, don't waste them away wishing for better days

  2. #2
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    Did warranty replace?
    konahonzo

  3. #3
    A guy who loves to DH
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    wow im in at 165-170. That could have gone so bad. Seems it didnt. Im glad.

  4. #4
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    Seems like an odd place to crack behind the weld. Too lazy to look up spec, dpes Kona still use scandium frames?
    Keep the rubber side down

  5. #5
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    I've seen a pretty gnarly rider who's 220, mid pro, total plow rider, and his operator is holding up just fine. Must've just been unlucky.

  6. #6
    GAME ON!
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    it's always the smooth, light riders that crack the frames, isn't it?
    RIP Adam Yauch

    "M.C. for what I AM and do, the A is for Adam and the lyrics; true"

  7. #7
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    Quote Originally Posted by Gemini2k05 View Post
    I've seen a pretty gnarly rider who's 220, mid pro, total plow rider, and his operator is holding up just fine. Must've just been unlucky.
    mid pro??? Please....
    the trick is ENJOYING YOUR LIFE EACH DAY, don't waste them away wishing for better days

  8. #8
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    Do he do that "just riding along..."? Seems a pretty common accurance.
    The guy yo' momma "act" like she don't know!

  9. #9
    backwoods and backwards
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    Looks like the ziptie isn't tight enough...causing excess cable-slap against the down tube

  10. #10
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    pffft it's a Kona.

  11. #11
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    Quote Originally Posted by SHIVER ME TIMBERS View Post
    mid pro??? Please....
    You so silly.

  12. #12
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    Well, a broken bike is a broken bike, I guess it happens, maybe the frame was invalid, who knows...

    Nothing the warranty replacement frame cant fix :P

  13. #13
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    Is there a dent on the other side of the frame? Looks kinda like the crack was caused by a lateral force. Like in a crash or something.

  14. #14
    backwoods and backwards
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    Quote Originally Posted by Khartik View Post
    Looks kinda like the crack was caused by a lateral force. Like ...
    ...Like cable slap?

  15. #15
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    Quote Originally Posted by toni31 View Post
    Well, a broken bike is a broken bike, I guess it happens, maybe the frame was invalid, who knows...

    Nothing the warranty replacement frame cant fix :P
    hopefully they are better then my chainstay replacement...what a fricken pain and costly too....another rider just gave a way his too...because you could buy a complete kona at wheelworld at a cheaper place then a replacement
    the trick is ENJOYING YOUR LIFE EACH DAY, don't waste them away wishing for better days

  16. #16
    RideDirt
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    My Kona held up perfectly fine , im 200lbs with no armor , and im not the smoothest rider lol ..

    From that pic im assuming he must of been hitting some serious drops with it ? How did it happen..

  17. #17
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    Roof rack incident?

  18. #18
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    Quote Originally Posted by 006_007 View Post
    Roof rack incident?
    riding
    the trick is ENJOYING YOUR LIFE EACH DAY, don't waste them away wishing for better days

  19. #19
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    220lbs here and mines holding up so far. Tell your little buddy to warranty the frame and use the saved money for some food.

  20. #20
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    Quote Originally Posted by Khartik View Post
    Is there a dent on the other side of the frame? Looks kinda like the crack was caused by a lateral force. Like in a crash or something.
    Yeah. I think that hitting a tree would cause a crack like that!

  21. #21
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    Meh, all aluminum frames will break at some point. Some frames have a flaw that makes it happen quicker. That's why they come with a warranty.
    "It looks flexy"

  22. #22
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    Looks like the same area of the frame where all those intenses were breaking a couple years back.
    You have a very rigid junction of tubes as the tt dt and ht are all welded together. There is stress on the tubes just before they all come together as they are more flexable than the joined tubes.
    Not that it should break, but it is easy to see why it could break there.

  23. #23
    Now with flavor!!
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    It's also where the butting stops.

    ........and where I've seen at least one of almost every single kona dh bike ever made fail.
    STRAVA: Enabling dorks everywhere to get trails shut down........ all for the sake of a race on the internet.

  24. #24
    Now with More Wood
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    Quote Originally Posted by SHIVER ME TIMBERS View Post
    This was a 2012 operator ridden by a smooth expert rider weighing approx. 140 pounds. yikes !!!!
    Smooth Operator. Sade's BACK.

  25. #25
    Stand back
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    So are you saying that frames last longer if you don't shave?
    Golden Bike Park

    Golden Connector Trails need your support!

  26. #26
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    <iframe width="480" height="360" src="http://www.youtube.com/embed/tB8EUs5NFLM" frameborder="0" allowfullscreen></iframe>
    "It looks flexy"

  27. #27
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    Quote Originally Posted by Iggz View Post
    Kona go boom

    ]
    yeah baby
    Attached Thumbnails Attached Thumbnails Broken kona Operator..anyone else????-2012-01-22.jpg  

    the trick is ENJOYING YOUR LIFE EACH DAY, don't waste them away wishing for better days

  28. #28
    Now with More Wood
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    Quote Originally Posted by dbabuser View Post
    So are you saying that frames last longer if you don't shave?
    Well duh.


  29. #29
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    Quote Originally Posted by Scythe View Post
    That has to be one of the best pics I've seen on this forum.
    It was an honor to deliver
    Ground Steeze. @iggy_strbac

  30. #30
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    Quote Originally Posted by MTBCanuck View Post
    Where is her underwear? Gross.
    Underwear is for people who don't wipe their ass.

  31. #31
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  32. #32
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    Quote Originally Posted by Scythe View Post
    That has to be one of the best pics I've seen on this forum.
    Photo was shopped do a search

  33. #33
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    This thread is golden.

  34. #34
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    Nothing like daylight through a box. There. I said it.
    Keep the rubber side down

  35. #35
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    NFSW.....there should be a warning before you click in. lol

  36. #36
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    Subscribed

  37. #37
    Now with More Wood
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    Ah yes. The famous train gap.

  38. #38
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    Quote Originally Posted by SHIVER ME TIMBERS View Post
    This was a 2012 operator ridden by a smooth expert rider weighing approx. 140 pounds. yikes !!!!

    Looks flexy.
    next time

    [QUOTE=spazzy] Might as well sell your bikes, E-riding is much more productive.

  39. #39
    Living Ghetto Fabulous!
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    Wow. Epic derailment guys. (not that I'm complaining inbeforethelock)

    Back on topic:



    Quote Originally Posted by kidwoo
    The internet sounds like a tough place to ride.

  40. #40
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    Let me guess, "Just Riding Along"!




    Quote Originally Posted by Uncle Cliffy View Post
    Wow. Epic derailment guys. (not that I'm complaining inbeforethelock)

    Back on topic:
    "It looks flexy"

  41. #41
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    Are we allowed to post broken specialized bikes?

  42. #42
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    does anyone have close up photos of the failure surface? it might be possible to tell what the failure mode was (i.e. shear failure versus tensile failure, for example).

    in the pictures that uncle cliffy posted, it seems like something caused the material (i'm assuming some sort of aluminum alloy) to exceed its yield point, and move into plastic deformation. the pix that SMT posted showed failure w/o deformation. it's possible that it could be a combination of material defect (change in alloy microstructure due to welding) and also design defect (stress spiking beyond the yield point of aluminum in a load case not foreseen by the engineer)

    File:Stress v strain Aluminum 2.png - Wikipedia, the free encyclopedia
    94 Specialized Rockhopper

  43. #43
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    Quote Originally Posted by dth656 View Post
    does anyone have close up photos of the failure surface? it might be possible to tell what the failure mode was (i.e. shear failure versus tensile failure, for example).

    in the pictures that uncle cliffy posted, it seems like something caused the material (i'm assuming some sort of aluminum alloy) to exceed its yield point, and move into plastic deformation. the pix that SMT posted showed failure w/o deformation. it's possible that it could be a combination of material defect (change in alloy microstructure due to welding) and also design defect (stress spiking beyond the yield point of aluminum in a load case not foreseen by the engineer)

    File:Stress v strain Aluminum 2.png - Wikipedia, the free encyclopedia
    And if there's a shiny rub spot anywhere where the tubes came apart, it means that it had cracked previously, then failed catastrophically later.
    "It looks flexy"

  44. #44
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    Looks like the result of a large lateral force, like the forks slamming into the tubes in a big crash or frame hitting an object. If it was from the stresses of normal riding would you not expect the crack to be on the top or bottom.
    Hopefully you will get a replacement, I am waiting on the outcome of my own warranty claim at the moment except mine is a coilair
    Attached Thumbnails Attached Thumbnails Broken kona Operator..anyone else????-imgp0515-large-.jpg  


  45. #45
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    Quote Originally Posted by thrower78 View Post
    Looks like the result of a large lateral force, like the forks slamming into the tubes in a big crash or frame hitting an object. If it was from the stresses of normal riding would you not expect the crack to be on the top or bottom.
    Hopefully you will get a replacement, I am waiting on the outcome of my own warranty claim at the moment except mine is a coilair
    This is 2011 coilair?

    How did this happen?

    Looks like warranty case to me.

  46. #46
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    Quote Originally Posted by thrower78 View Post
    Looks like the result of a large lateral force, like the forks slamming into the tubes in a big crash or frame hitting an object. If it was from the stresses of normal riding would you not expect the crack to be on the top or bottom.
    Hopefully you will get a replacement, I am waiting on the outcome of my own warranty claim at the moment except mine is a coilair
    From your picture, it looks like it broke where the gusset ends - if you inspect closely, there's likely an issue with the weld somewhere - cold, pinholes, or some other type of "stress riser". Also likely that it cracked first and you'll the rub marks to prove it.
    "It looks flexy"

  47. #47
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    Correct 2011 coilair, done a massive amount of riding on it in the last 4 months including mountain of hell and megavalanche, it has had 3 straight months of european bike parks and tracks.
    I was at Leogang leading up to the world champs, first ride down the hill on the hangman 1 track all good. Second ride hit the first big patch of roots, large cracking sound lost the rear end all over the place went down hard in the roots. Thats basicly it, it has cracked straight through the lower edge of the weld, it could not be more on the weld seam. Hopefully kona will pick up the tab so to speak, as it was only purchased in Feb and only ridden from June to now.

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