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  1. #1
    FIRENZE rulez !!
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    bad crash !! Lefty separated while riding

    just saw on a italian mtb forum


    grave incidente con lefty carbon - Mountain bike | MTB-forum.it



    just a fast stranslation of the accident.

    2 guys riding togheter.

    taurine rider say "stop a while, my lefty lockout lever does not work "

    some trial , not working

    on the slow restart, after few meters , there is the lower leg of the fork separating from the upper part.

    very fast happening , so rider can not put the hands to absorbe ground impact .

    very bad crash of the rider on the ground: some fractures on the face bones , problems on some teeth, eyes with some damage too

    investigating now on the 2007 recall of the SL Lefties , if done or not.
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  2. #2
    FIRENZE rulez !!
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    any other case like this ?

  3. #3
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    Dame! that sucks!

  4. #4
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    Quote Originally Posted by eliflap View Post
    any other case like this ?
    eons ago when i raced there was a really bad crash at a state race where the upper and lower parts if the lefty separated like in the photos while the racer was on a high speed section thus sending him violently over the bars and to the hospital. I can’t recall the year but it was somewhere around 06’ I think at Warda TX and the guy was on the BikeLane team outta the Woodlands TX Somehow it was part failure and he ended up getting a new lefty outta it and I think a new cannondale road bike. But this could be urban legend perhaps someone from Texas might know whom the guy was and fill in the gaps.

    Sorry about the accident my carbon steerer (Easton ex90x) broke on my CX bike during a training ride last July lucky we were slowing down for a stop light when it happened and all I ended up with was some nasty road rash.

  5. #5
    LA CHÈVRE
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    I heard of one case years ago, turned out the Lefty had not been put back together correctly after a self-service if I recall...

    DAN.GEROUS.NET : MOUNTAIN BIKING : CYCLOCROSS : ROAD :

  6. #6
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    Bad - I hope there was compensation and a new ALLOY Lefty.

  7. #7
    All Lefty's, all the time Moderator
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    The damper unscrewed from the lower, plain and simple.

    If the fork's never been apart since new, I'd say it was long overdue for a check as far as snugging up stuff.

    The recall was centered around improper loctite application and might have helped if it had been done. But stuff does loosen up with trail time.

    Sorry to hear about the crash, hope the guy makes a swift recovery!
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

  8. #8
    ballbuster
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    Yikes!

    Yeah, probably a good idea to check the snugnes of that nut during each oil change... or something. The layout of the innards are still a bit of a mystery to me. Then again, if the nut is loctited in place, snugging it up might break the loctite bond.

    I dunno... Mendon is the real expert on these things.

    Fortunately, it seems like these kind of incidents are flukes. The only other Lefty failure I heard of was that one where the needle bearings fell out and the lower was flopping around in the upper.... probably due to improper reassembly after a self service.

  9. #9
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    Is it just me....

    Or does that upper tube look awfully clean and in perfect shape. I know that if that happened where I live and the fork completely separated, that upper tube would be beat to hell, likely broken and full of dirt.
    Only the curious have something to find.

    http://wanderlustandtheroadlesstraveled.blogspot.com/

  10. #10
    Music & Bikes
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    And I wonder : for the lower part to get out without the top part being completly destroyed , there has to be major 'air borne' implied ........



    I can visualise the scene
    "There is a big difference between kneeling down and bending over" -FZ

  11. #11
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    moral of the story

    If your lefty starting exhibiting signs of a failure.. dont keep riding

  12. #12
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    What kind of signs should we watch out for ? if anyone knows , post up.

  13. #13
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    I had a clunking during compressions - got a rebuild it stopped

  14. #14
    All Lefty's, all the time Moderator
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    Why it's clean? It looks like that is a post crash, back at the house pic, an it was likely wiped down, just a guess.

    Top end separation without total destruction. The way it failed gave the lower end a massive pressurized separation, se the plug at the end of the lower? That's the air piston, which is at the bottom end of the damper, which is still inside the upper. Basically, the damper unscrewed, which allowed the lower to pull free from the upper, with the air spring providing a healthy powerful boost to the separation process, yikes.

    What to look for? Odd feelings, clunking that won't fix itself with a reset, things like that.

    More than anything, this strongly points out the value in having any fork serviced once a year or so, not just Leftys. So many dual sliders are held together with aluminum bolts nowadays, and aluminum does fail more easily than steel, and things ridden hard, for many cycles, do loosen over time, Loctite, lock washers, proper torque, all these are not guarantees. A cautionary tale if ever there was one.
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

  15. #15
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    Here at Mendoza- Argentina, had that same result. The bicycles was a Rush Carbon 1 2007, and the dealer did not tell the owner about the recall, so after 20 months of riding and some races the lefty separated while riding. Lucky the rider had some minor scratches. The lefty was replaced with a new one.

  16. #16
    No good in rock gardens..
    Reputation: Sideknob's Avatar
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    My Lefty DLR110 has just done this - the lower didn't come out but there was huge lateral play and I had to walk home. Second failure of this fork in about 9 months. There will be some interesting scenes when I wheel the Rush back into the LBS again tomorrow....
    My Cannondale Lefty keeps failing....

  17. #17
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    Crazy!

  18. #18
    No good in rock gardens..
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    Crazy is right. I am glad I was on a fairly slow section of singletrack when it happened. I heard a "clang" from the Lefty and the front immediately felt floppy. So I got off and sure enough, the lower was flopping around inside the upper. I'm glad I was on the return side of the loop...

    Took the floppy Lefty into the LBS today who were somewhat puzzled by it all - I'm waiting on a call from them. As I said, the fork was serviced after its last failure about 9 months ago and has hardly been thrashed. Last time it took 5 weeks to get it back!

    ATM, I am not a happy Cannondale rider...
    My Cannondale Lefty keeps failing....

  19. #19
    All Lefty's, all the time Moderator
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    Quote Originally Posted by Sideknob View Post
    fork was serviced after its last failure about 9 months ago and has hardly been thrashed. Last time it took 5 weeks to get it back!
    What failed last time? Same thing? Shouldn't take that long to get your fork fixed, you need a better shop. One that isn't puzzled by the obvious either, would help. Basically, you broke a bearing cage, or, better said, it disintegrated. Why? Couple thoughts. Bad bearing cage to begin with (happens) overly aggressive and frequent bearing resets, or, bad migration that was allowed to run, without ever getting reset. There's an answer, and if it's happened once already, there's an answer that might involve you as well. No finger pointing, just working through all the possibilities as presented.
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

  20. #20
    No good in rock gardens..
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    Quote Originally Posted by MendonCycleSmith View Post
    What failed last time? Same thing? Shouldn't take that long to get your fork fixed, you need a better shop. One that isn't puzzled by the obvious either, would help. Basically, you broke a bearing cage, or, better said, it disintegrated. Why? Couple thoughts. Bad bearing cage to begin with (happens) overly aggressive and frequent bearing resets, or, bad migration that was allowed to run, without ever getting reset. There's an answer, and if it's happened once already, there's an answer that might involve you as well. No finger pointing, just working through all the possibilities as presented.
    Last time, the lockout and rebound went. No lockout, no rebound. Total pogo stick. The fork was about one month outside of warranty.

    Either way, I have had enough of the Lefty.

    You know what it's like when you lose faith in something - it's hard to get that faith back and in this case I don't think I'll even bother trying. I'll always be wondering "what next?"

    The irony in all this is that I chose the Rush because the low maintenance single pivot design appealed to me. As it turns out, all the problems have come from the other end of the bike!
    My Cannondale Lefty keeps failing....

  21. #21
    All Lefty's, all the time Moderator
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    Quote Originally Posted by Sideknob View Post
    Last time, the lockout and rebound went. No lockout, no rebound. Total pogo stick. The fork was about one month outside of warranty.

    Either way, I have had enough of the Lefty.

    You know what it's like when you lose faith in something - it's hard to get that faith back and in this case I don't think I'll even bother trying. I'll always be wondering "what next?"

    The irony in all this is that I chose the Rush because the low maintenance single pivot design appealed to me. As it turns out, all the problems have come from the other end of the bike!
    Bummer, well the damper caps coming loose is a fairly common issue, and one that makes it really nice to have a shop that works on them, since it's a quick fix, in and of itself.

    The separation is far less common. What you have, with the busted bearing cage is also very uncommon. I see perhaps one or two every couple years, out of the hundreds of forks I service every year.

    You might want to be careful, sounds like the odds aren't in your favor currently, play it safe, stay home and drink beer.
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

  22. #22
    No good in rock gardens..
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    Thanks. I'll do what I did last time the Lefty died - get Mr Reliable Hardtail down and ride that!

    My Cannondale Lefty keeps failing....

  23. #23
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    I happened to me on the same exact bike from the original post. Mine happened during a race and I broke my collarbone.

    This was a defect from cannondale it part of their recall. Same as others, dealer did not contact me so now setup Google alerts to track any posting of recalls. Cannondale replaced theentire bike and frame and did a stand-up job taken care of everything.

  24. #24
    No good in rock gardens..
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    To my delight, I got a call from the LBS stating that my Lefty was back, and Cannondale Australia had repaired it under warranty. Which I'm very happy with as it was out of warranty by quite some time. Fork now seems to lock out properly now, with no top end clunk. This was all done much faster than last time, too.
    My Cannondale Lefty keeps failing....

  25. #25
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    Oh god mio that pain.
    We are riders on our mounts of two wheels, by Catxl.

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