Results 1 to 8 of 8
  1. #1
    Professional Crastinator
    Reputation: Fleas's Avatar
    Join Date
    Jan 2006
    Posts
    2,475

    Does [Too] High Spoke Tension Lead to Catastrophic Failure?

    I would like confirmation/dismissal of my anecdotal evidence that an over-tensioned bicycle wheel is more likely to collapse ("implode"). That is, under excessive tension, if the wheel is impacted such that it is deflected beyond whatever balance point provided by spoke tension ("kick over" if you will), that it will collapse rather than rebound. Whereas a wheel under normal tension is more resilient and will snap back into shape, at least approximately, without failing entirely.

    Thanks,
    -F
    It's never easier - you just go faster.

  2. #2
    mtbr member
    Reputation: Lupob6's Avatar
    Join Date
    Apr 2012
    Posts
    131

    RE: Does [Too] High Spoke Tension Lead to Catastrophic Failure?

    I'm curious of the same thing
    Sent from my RM-860_nam_usa_100 using Board Express

  3. #3
    transmitter~receiver
    Reputation: meltingfeather's Avatar
    Join Date
    May 2007
    Posts
    7,892
    Confirmed
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

  4. #4
    Professional Crastinator
    Reputation: Fleas's Avatar
    Join Date
    Jan 2006
    Posts
    2,475
    Quote Originally Posted by meltingfeather View Post
    Confirmed
    Good enough for me.
    /thread

    -F
    It's never easier - you just go faster.

  5. #5
    Nouveau Retrogrouch SuperModerator
    Reputation: shiggy's Avatar
    Join Date
    Dec 1998
    Posts
    48,002

    Does [Too] High Spoke Tension Lead to Catastrophic Failure?

    Quote Originally Posted by Fleas View Post
    Good enough for me.
    /thread

    -F

    Of course. If a wheel fails because the tension was too high, then the tension was excessive.
    mtbtires.com
    The trouble with common sense is it is no longer common

  6. #6
    mtbr member
    Reputation:
    Join Date
    Jun 2006
    Posts
    221
    Yes it's hard to do but if you keep tightning a wheel during a build it will potato chip. There is no permanent damage at this point just back off the tension. I think this is a buckling failure 32 spokes times 200 pounds is 6400 pounds compression force in the rim at right angles to the spokes. A small amount of force added to this will put a permanent bend in the rim.
    "Dish is illogical." Spoke of Vulcan.

  7. #7
    mtbr member
    Reputation: Salespunk's Avatar
    Join Date
    Sep 2005
    Posts
    2,596
    Yes, definitely

  8. #8
    Professional Crastinator
    Reputation: Fleas's Avatar
    Join Date
    Jan 2006
    Posts
    2,475
    Quote Originally Posted by shiggy View Post
    Of course. If a wheel fails because the tension was too high, then the tension was excessive.
    Yeah, but...

    At the time that it fails, one doesn't actually know that it was over-tensioned. One just ponders back to the time when someone was tweaking on it and whether said tweaking was contributory or merely coincidental. So we try to determine: is it the cause or the symptom.

    It's always in hindsight that we discover these things.

    Thanks everybody. Confirmation is fairly conclusive.
    -F
    It's never easier - you just go faster.

Similar Threads

  1. Catastrophic Failure DT Swiss 36 point Hub
    By flyag1 in forum 29er Bikes
    Replies: 115
    Last Post: 06-03-2014, 12:41 PM
  2. Catastrophic failure Niner Carbon Fork
    By CupOfJava in forum 29er Components
    Replies: 491
    Last Post: 06-28-2012, 06:15 PM
  3. Sudden catastrophic failure PARANOIA
    By bloodpuddle in forum General Discussion
    Replies: 34
    Last Post: 01-31-2012, 12:32 AM
  4. Catastrophic failure of seatpost clamp!!!
    By miwuksurfer in forum General Discussion
    Replies: 20
    Last Post: 10-19-2011, 07:39 AM
  5. Scott Ransom Catastrophic Failure.........
    By JeffSkisMontana in forum Scott Sports
    Replies: 64
    Last Post: 10-02-2011, 07:23 PM

Posting Permissions

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