Frame cracked due to winter riding? :-)- Mtbr.com
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  1. #1
    G3Riders
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    Frame cracked due to winter riding? :-)

    Hello,
    Just stupid (or not?) question wich raised my friend and we argued a lot abou it:
    "is it possible that frame/weld on frame cracked due to riding in lower temparatures"?

    My friend does not ride in really low temparatures - just -5 Celsius.

    Here's photo of crack.


    I know most of you probably don't ride in snowy conditions, but just wondering if cold weather can contribute to weld cracks.

  2. #2
    Former Noob Herder
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    normally no the temperature isnt low enough to make the aluminum brittle. But if there was some internal stresses already present in the metal, the contraction could promote a crack ontop of the normal riding stresses; but this is a case of a frame defect anyways.

    Look at it this way: airplanes fly in much colder temperatures and they are mostly made from aluminum.
    Quote Originally Posted by Gunslingger
    no doubt you must have majored in english or something rad!!!

  3. #3
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    Quote Originally Posted by zedro
    normally no the temperature isnt low enough to make the aluminum brittle. But if there was some internal stresses already present in the metal, the contraction could promote a crack ontop of the normal riding stresses; but this is a case of a frame defect anyways.

    Look at it this way: airplanes fly in much colder temperatures and they are mostly made from aluminum.

    The cold could affect, or crack your frame. Airplanes are made of Aluminum, but they are designed to take the low tempters of the altitude. Sorry to hear what happen.

  4. #4
    V10 Freerider
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    not unless by winter you mean abuse... It would take some pretty seriously low temps to have that kind of effect
    The Super T you have is really a very good fork. I'd take that fork over a Fox 40 or a Boxer unless i was entering a fashon contest instead of a race

  5. #5
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    Quote Originally Posted by kiko77
    The cold could affect, or crack your frame. Airplanes are made of Aluminum, but they are designed to take the low tempters of the altitude. Sorry to hear what happen.
    we're talking about -5C here, not -50....
    Quote Originally Posted by Gunslingger
    no doubt you must have majored in english or something rad!!!

  6. #6
    -arschloch-
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    no

    Quote Originally Posted by kiko77
    The cold could affect, or crack your frame. Airplanes are made of Aluminum, but they are designed to take the low tempters of the altitude. Sorry to hear what happen.
    in general, the yield and fracture strengths of aluminium (and other metals like it) are pretty insensitive to temperature.

    bummer about the frame. what was it?
    To air is human, to dig is divine.

  7. #7
    Xtremely Moderate
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    Quote Originally Posted by zedro
    we're talking about -5C here, not -50....
    Hey hey hey! .....speak American here....... F not C!
    "Korash your enemiez, zee zem driven bevore you, and ear ze lamentation of za vemen"

  8. #8
    Disco-Superfly
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    Quote Originally Posted by e<i>o
    Hey hey hey! .....speak American here....... F not C!
    here you go
    Attached Images Attached Images
    Jake
    Yeti 303 WC 25th

    Quote Originally Posted by Dwight Moody
    Didn't you read the sticker on that shock? It said not to do whatever you did.

  9. #9
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    Quote Originally Posted by [email protected]
    here you go

    Ahhhhhhh that's better. Thanks.....

    As an American I get very freaked out by Celsius and Metric.
    "Korash your enemiez, zee zem driven bevore you, and ear ze lamentation of za vemen"

  10. #10
    Former Noob Herder
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    Quote Originally Posted by eo
    Ahhhhhhh that's better. Thanks.....

    As an American I get very freaked out by Celsius and Metric.
    yeah, celcius is so complicated. Water freezes at 0, water boils at 100....
    Quote Originally Posted by Gunslingger
    no doubt you must have majored in english or something rad!!!

  11. #11
    VIA
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    Don't know buy my frame sems to be more afected by the worm weather since always crack on summer...

  12. #12
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    I think it would be too cold for you to ride before it would be cold enough to make the aluminum brittle. The main body of an airplane is made out of very similar grades of aluminum as bike frames, so I think zedro makes a good point. It think natural stresses or a frame defect just happened to have done your frame in during the winter. 20F/-5C is really in the normal temperature range that we would expect a common structural metal to hold up in.

  13. #13
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    Quote Originally Posted by zedro
    yeah, celcius is so complicated. Water freezes at 0, water boils at 100....
    No no no..............32 & 212. Those are much easier to remember.

    I am American therefore you must do things my way.
    Even if its contrary to the way the rest of the world does things.
    "Korash your enemiez, zee zem driven bevore you, and ear ze lamentation of za vemen"

  14. #14
    G3Riders
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    Frame is A-Zone by Author (CZ)

    Quote Originally Posted by chuffer
    bummer about the frame. what was it?
    That's my freind's freeride frame from Czech Rep. called Author A-Zone. They're quite cheap in Europe and unfortunately their rear triangles used to break sooner or later. Design's fault I suppose.


  15. #15
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    Quote Originally Posted by e<i>o

    I am American therefore you must do things my way.
    Even if its contrary to the way the rest of the world does things.
    yeah, tell me about it...

  16. #16
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    Quote Originally Posted by zedro
    yeah, celcius is so complicated. Water freezes at 0, water boils at 100....
    haha!

  17. #17
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    As stated, aluminum is very resistant to becomming brittle...unlike steel.
    I saw a domonstration once...two dowel pins were put in liquid nitrogen, one steel (low carbon), one aluminum. Both were hit by a hammer....the steel shattered, the aluminum bent

  18. #18
    /dev/null
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    I think threads older than two months should require a moderator's permission before you post in them.

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