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  1. #1
    Carpe Diem bdcheung's Avatar
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    Catastrophic failure: help identify cause

    I was riding my CX bike to work this morning, riding it along the packed-dirt trail that parallels the asphalt MUP.

    As I'm riding I hear a "thud thud thud thud thud thud BOOM" with the boom being my rear tire going flat.

    here's what the tube looks like:


    Any idea what could have caused this?

    Tires are 700x35 Maxxis Locusts. Wheels are Soul S4.0. Tubes are Bontrager 700x35-44c
    "When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
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  2. #2
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    First give me 15% off my Hammer order.

  3. #3
    Carpe Diem bdcheung's Avatar
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    clink the link
    "When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
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  4. #4
    Bike Commuter MrRamonG's Avatar
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    Looks like a faulty tube.
    Orange County CA
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    May the wind be with you.

  5. #5
    Bike Commuter MrRamonG's Avatar
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    Oh, and a flat tire is not a "Catastrophic failure". This is:
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    Orange County CA
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  6. #6
    I Love My Dream
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    Quote Originally Posted by bdcheung View Post
    I was riding my CX bike to work this morning, riding it along the packed-dirt trail that parallels the asphalt MUP.

    As I'm riding I hear a "thud thud thud thud thud thud BOOM" with the boom being my rear tire going flat.

    here's what the tube looks like:


    Any idea what could have caused this?

    Tires are 700x35 Maxxis Locusts. Wheels are Soul S4.0. Tubes are Bontrager 700x35-44c
    Wow I've never seen anything like that. A blown tube! Who would have thought? It's another of these JRA (just riding along) incidences that I've heard about.
    Last edited by Saddle Up; 09-30-09 at 08:53 AM.
    It's none of my business what other people think of me.

  7. #7
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    mayb someone doesnt like you?

  8. #8
    Carpe Diem bdcheung's Avatar
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    Quote Originally Posted by Saddle Up View Post
    Wow I've never seen anything like that. A blown tube! Who would have thought? It's another of these JRA (just riding along) incidences that I've heard about.
    Feel better now?
    "When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
    ΛΧΑ ΔΞ179 - 15% off your first Hammer Nutrition order!

  9. #9
    Senior Member
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    how does the bead of the tire look?

    I have seen some Maxxis cross tires with some shoddy looking beads, and if the bead came off the rim a little bit that would explain the thumping and then when enough tube got through that would explain the tube blowing out
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  10. #10
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    Quote Originally Posted by jonestr View Post
    how does the bead of the tire look?

    I have seen some Maxxis cross tires with some shoddy looking beads, and if the bead came off the rim a little bit that would explain the thumping and then when enough tube got through that would explain the tube blowing out
    +1

    I had that type of flat with my ritchey speedmax tires. The tire bead unseated and started to bulge to the side, thus the thud thud thud sound of the tire/tube hitting the frame. These tires were way loose on my rims; I could put them on with no effort with one thumb. Needless to say, I no longer ride these tires.
    Blue Axino

  11. #11
    Carpe Diem bdcheung's Avatar
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    It may indeed be a tire issue. I'd been planning on putting mud2's on, guess I'll prioritize that now.
    "When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
    ΛΧΑ ΔΞ179 - 15% off your first Hammer Nutrition order!

  12. #12
    antisocialite dirtyphotons's Avatar
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    yeah, i've seen that before several times. always been the bead coming off the rim. sounds like a gunshot.
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    Because when fashion conflicts with function, I vote for function.

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