Results 1 to 4 of 4
  1. #1
    RoadBikeReview Member
    Reputation:
    Join Date
    Oct 2011
    Posts
    343

    Shimano Rim Failure

    Was wondering what everybody thought of the Pro three spoke carbon wheel coming apart during Tirreno-Adriatico Time Trial. Does anybody think the tubular tire came off causing the wheel to break apart when it touched the street? Or this is what Shimano will blame it on. Kinda concerning and Gianni very lucky he was not seriously hurt! What's your thought.

  2. #2
    Forever a Student
    Reputation: MMsRepBike's Avatar
    Join Date
    Mar 2014
    Posts
    4,289
    When it happened, the commentators I was listening to thought it was a tire failure.

    They said he flatted/blew out or the glue job failed or both and the tire came completely off of the rim. Once the rim hit the pavement with no tire on it, it broke.

    After the stage one of the commentators was talking to G when G told him that two more bikes had the front tires come off of the rim, causing them to hit the ground and break. So three tire failures, three broken rims, one catastrophic. All on the front wheels.

    Him and three others had to just freewheel for about a whole kilometer while waiting for at least one of the three to get a new bike and get back on the group. Have to finish with 5 and they only had 4 riders that didn't have tire/rim trouble.

    At this point I'm inclined to believe him, it was Dan Lloyd by the way doing the commentating, he's pretty stand up it seems. But of course it's just a guess and observation.

    First thought might be failing carbon, but looking at the video, listening to the riders and the commentators, I'm with them on it being a tire problem.
    use a torque wrench

  3. #3
    RoadBikeReview Member
    Reputation: Notvintage's Avatar
    Join Date
    May 2013
    Posts
    1,002
    Quote Originally Posted by MMsRepBike View Post
    They said he flatted/blew out or the glue job failed or both and the tire came completely off of the rim. Once the rim hit the pavement with no tire on it, it broke.
    Sounds like a quality problem, as I've had a blow out on my Zipp 202s and the rim hit some pavement and the rim didn't explode.

  4. #4
    RoadBikeReview Member
    Reputation:
    Join Date
    Dec 2010
    Posts
    919
    I'll bet some Team Sky mechanic failed to properly glue the front tubs on the TT bikes. The tire on Moscon's bike can be seen coming off the rim and flopping around just before the rim disintegrates. I'll bet similar things happened to the other wheels.

    I don't think you can blame the Moscon crash on JRA wheel failure. I do think that such a catastrophic failure when the rim hits the ground is a bit ridiculous, regardless of the speed we're talking about here. Luckily, the chance of me buying a carbon tubular tri-spoke wheel are zero so I'm not fussed.

Similar Threads

  1. Shimano Tiagra Dual Control ST-4501 failure
    By JoeBiker in forum Components, Wrenching
    Replies: 8
    Last Post: 08-16-2016, 02:35 PM
  2. Trek not liable for failure to warn of carbon fiber failure
    By RichardT in forum General Cycling Discussion
    Replies: 22
    Last Post: 03-21-2015, 05:56 PM
  3. Catastrophic Failure of the Shimano Chain Ultegra
    By gillug59 in forum General Cycling Discussion
    Replies: 95
    Last Post: 04-19-2011, 09:24 AM
  4. 2008 Shimano 105 shifter failure(s)
    By MoonHowl in forum Shimano
    Replies: 7
    Last Post: 06-11-2009, 03:39 PM
  5. 2008 Shimano 105 shifter failure(s)
    By MoonHowl in forum Components, Wrenching
    Replies: 2
    Last Post: 03-23-2009, 07:43 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •