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  1. #1
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    Cool-blue Rhythm Cold Weld Frame Repair!!!

    My chain-stay cracked after one too many drop to flats

    <a href="http://s34.photobucket.com/user/mrpea9999/media/bottemout.png.html" target="_blank"><img src="http://i34.photobucket.com/albums/d141/mrpea9999/bottemout.png" border="0" alt=" photo bottemout.png"/></a>


    <iframe width="560" height="315" src="http://www.youtube.com/embed/f6kS8eiS47k?rel=0" frameborder="0" allowfullscreen></iframe>


    mushroomdrop - YouTube

    <iframe src="http://player.vimeo.com/video/67911462" width="500" height="281" frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe> <p><a href="http://vimeo.com/67911462">Fuglio..</a> from <a href="http://vimeo.com/user1614227">RCC</a> on <a href="http://vimeo.com">Vimeo</a>.</p>


    <iframe src="http://player.vimeo.com/video/65557379" width="500" height="333" frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe> <p><a href="http://vimeo.com/65557379">Zach landing like a freight train to flat, 1st attempt</a> from <a href="http://vimeo.com/user11433027">cabracadabra</a> on <a href="http://vimeo.com">Vimeo</a>.</p>



    My frame rebelled against the poor treatment from me and developed a crack. Threatening to hurt me as well if i continued my abuse.

    <a href="http://s34.photobucket.com/user/mrpea9999/media/0621132234.jpg.html" target="_blank"><img src="http://i34.photobucket.com/albums/d141/mrpea9999/0621132234.jpg" border="0" alt=" photo 0621132234.jpg"/></a>


    With no money and no welder connections. It looked like my drop to flat days were over, if i couldn't fix the frame myself.

    I decided to use an ancient hillbilly technique of "cold welding"

    <a href="http://s34.photobucket.com/user/mrpea9999/media/0621132358b.jpg.html" target="_blank"><img src="http://i34.photobucket.com/albums/d141/mrpea9999/0621132358b.jpg" border="0" alt=" photo 0621132358b.jpg"/></a>


    I coated the chain-stay with the paste.

    <a href="http://s34.photobucket.com/user/mrpea9999/media/0621132328a.jpg.html" target="_blank"><img src="http://i34.photobucket.com/albums/d141/mrpea9999/0621132328a.jpg" border="0" alt=" photo 0621132328a.jpg"/></a>

    Then i braced the top and bottom with two pieces of steel. I then secured the mess with steel hose clamps

    <a href="http://s34.photobucket.com/user/mrpea9999/media/0622131323a.jpg.html" target="_blank"><img src="http://i34.photobucket.com/albums/d141/mrpea9999/0622131323a.jpg" border="0" alt=" photo 0622131323a.jpg"/></a>

    <a href="http://s34.photobucket.com/user/mrpea9999/media/0622131323d.jpg.html" target="_blank"><img src="http://i34.photobucket.com/albums/d141/mrpea9999/0622131323d.jpg" border="0" alt=" photo 0622131323d.jpg"/></a>


    Since i was working on my bike i decide i might as well true the wheel before it brakes too.

    <a href="http://s34.photobucket.com/user/mrpea9999/media/0622132243-1.jpg.html" target="_blank"><img src="http://i34.photobucket.com/albums/d141/mrpea9999/0622132243-1.jpg" border="0" alt=" photo 0622132243-1.jpg"/></a>

    Do you like my "truing stand"? like I said no money...


    Ill report back with a ride report on the new cold weld technique, but I suspect I wont have any issues.

    Wish me luck

    Fuglio

  2. #2
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    You say you don't have any money, hopefully you have good insurance.
    Tantrum incoming
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  3. #3
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    IMO,
    All you really did was hide the crack, and thus make it harder to see how much worse it is getting.

    If it doesn't become visible, expect a catastrophic failure somewhere in the future.

  4. #4
    AZ
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    You created several new stress risers in the repair attempt.

  5. #5
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    Quote Originally Posted by bikeabuser View Post
    IMO,
    All you really did was hide the crack, and thus make it harder to see how much worse it is getting.

    If it doesn't become visible, expect a catastrophic failure somewhere in the future.
    no way cause if it cracks below the chain stay will have to flex and if that happens the jb weld will crack

    Quote Originally Posted by Dirty $anchez View Post
    You created several new stress risers in the repair attempt.

    what are these things you speak of??

  6. #6
    AZ
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    Quote Originally Posted by Fuglio View Post

    what are these things you speak of??
    Areas where the stresses will be concentrated instead of being spread out, namely the ends of the angles used in the repair. With the stress concentrated at the ends there will be a higher likelihood of failure at that point, the angles will also tend to act like a giant shear, possibly tearing the stays in half at either end. At the very least the localized forces are likely to form cracks at those points so keep a very close watch on that repair.

  7. #7
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    Quote Originally Posted by Fuglio View Post
    no way cause if it cracks below the chain stay will have to flex and if that happens the jb weld will crack
    what are these things you speak of??
    Says the man who is confident in his repair. Good luck.
    Tantrum incoming
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  8. #8
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    Quote Originally Posted by Fuglio View Post
    no way cause if it cracks below the chain stay will have to flex and if that happens the jb weld will crack
    Time will tell, but I'll add that you really haven't fixed anything, even if you did hide the problem well, and possibly shift it as D$ has pointed out.

    Keep a very close eye on things, and expect the worst.
    JB Weld isn't designed to do what you have done with it, and it is no where near as strong as that frame tube is, in tension or compression.

    http://forums.mtbr.com/frame-buildin...ame-97168.html

    Will "JB Weld" work for my bike frame?

  9. #9
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    The cold weld is just to hold the steel braces in place...... the crack grew about 1/8" on one ride so i think the stress area was all ready concentrated. ... time will tell but not much time i got a new huck to flat i built and haven't been able to try out yet since i was worried about my frame braking so next weekend ill know for sure

  10. #10
    AZ
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    double facepalm

  11. #11
    dru
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    OP, you can do a bit better job than that, and maybe even avoid death or severe injury with a little bit of carbon fiber cloth.

    You've already got some epoxy in the form of the JB Weld.

    Cut all that crap away and start again using epoxy and several wraps of carbon fiber.

    Wrap all that up with electrical tape to squeeze out excess resin and to ensure the resin has fully saturated the cloth.

    The swing arm is toast btw, since the aluminum has fatigued. Welding will only weaken it further since the heat treating will be lost.

    One more thing, drill out the ends of the crack, before re-repairing.

    Drew
    occasional cyclist

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    Quote Originally Posted by Fuglio View Post
    The cold weld is just to hold the steel braces in place...... the crack grew about 1/8" on one ride so i think the stress area was all ready concentrated. ... time will tell but not much time i got a new huck to flat i built and haven't been able to try out yet since i was worried about my frame braking so next weekend ill know for sure
    Just go hit a square curb a few times, and don't blame us ... We warned you !

  13. #13
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    Quote Originally Posted by dru View Post
    OP, you can do a bit better job than that, and maybe even avoid death or severe injury with a little bit of carbon fiber cloth.

    You've already got some epoxy in the form of the JB Weld.

    Cut all that crap away and start again using epoxy and several wraps of carbon fiber.

    Wrap all that up with electrical tape to squeeze out excess resin and to ensure the resin has fully saturated the cloth.

    The swing arm is toast btw, since the aluminum has fatigued. Welding will only weaken it further since the heat treating will be lost.

    One more thing, drill out the ends of the crack, before re-repairing.

    Drew
    Agreed ... So why even bother ?
    At best it's a band-aid on a severed carotid artery.

  14. #14
    dru
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    I'm trying to save him from getting hurt.

    Done properly the repair I suggested could last a long long time.

    What he's done isn't safe at all.

    Obviously my best advice would be a new swing arm.

    Drew
    occasional cyclist

  15. #15
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    Quote Originally Posted by dru View Post
    I'm trying to save him from getting hurt.

    Done properly the repair I suggested could last a long long time.

    What he's done isn't safe at all.

    Obviously my best advice would be a new swing arm
    .

    Drew
    Understood, and I agree ... The OP really needs to spend some money at this point.

  16. #16
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    No replacement parts available its a grey market frame that discontinued anyways. 2006 .

    Im kinda dis hartend. Really thought i would be impressing people with my ingenuity.. ...

    Frame was a loss before ... i at least streached it out for normal duties till the end of the season..

    No more drops to flat on it... sucks really thought i had the thing fixed thanks for talking some sence into me.

    Good news is that my friend will letvme borrow his highline to de virginize the drop. Then illbat least have a landing spotted to build up.....

    Time to start saving up....

    Wanted to be optimistic but this time its better to be realalistic....

    You guys suck im all bummed now

  17. #17
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    Better to be bummed and have us seem like we suck than to have a bike part jammed in your body when that ghetto repair fails.
    '12 S-Works Stumpjumper carbon HT
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    '94 S-Works M2

  18. #18
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    Quote Originally Posted by Mark in Baltimore View Post
    Better to be bummed and have us seem like we suck than to have a bike part jammed in your body when that ghetto repair fails.
    No
    I think its fine for regular riding .. rollers... drops with transitions .. fast rocky shit.....

    Asking it to handle a hard bottem out is to much.

  19. #19
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    Aww man, I was looking forward to you nailing the drop on the bike and proving everyone wrong...
    "Let us not become weary in doing good, for at the proper time we will reap a harvest if we do not give up." Galatians 6:9

  20. #20
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    If it were my frame, I wouldn't be riding it at all. Others have posted above the details of why, I can only add that I see it the same....very dangerous. To say it can/cannot take x/y/z types of riding is just asking for a really bad crash caused by total failure.

  21. #21
    AZ
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    Okay, the OP is now posting this in other forums as advice as a suitable fix. Please stop, this is as ghetto a repair as there ever was and should not be used as an example of a repair.

  22. #22
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    I found this mentioned somewhere on the interwebs...

    "JB lists its strength at 3960 PSI, which is a little stronger than the
    best values for wood but less than bamboo. So it should be OK for a
    spruce, yellow pine or oak bicycle frame but inadequate a frame made
    of high-performance bamboo tubing."

    You really should test it out on a pine bike before you risk life and limb.

  23. #23
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    Quote Originally Posted by Fuglio View Post
    No
    I think its fine for regular riding .. rollers... drops with transitions .. fast rocky shit.....

    Asking it to handle a hard bottem out is to much.
    I'm not trying to be rude, but your saying you think your repair is fine when you didn't have the basic knowledge to drill the ends of the crack.
    You really don't have any idea of what you're doing and slapped this half ass repair on your frame and calling it all good.

    I just hope you don't end up in the hospital.
    Tantrum incoming
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  24. #24
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    Quote Originally Posted by Dirty $anchez View Post
    Okay, the OP is now posting this in other forums as advice as a suitable fix. Please stop, this is as ghetto a repair as there ever was and should not be used as an example of a repair.
    Join up and link back to this thread

  25. #25
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    Quote Originally Posted by Fuglio View Post
    You guys suck im all bummed now
    Best line I have seen on MTBR. My new sig, me thinks...
    Quote Originally Posted by Fuglio View Post
    You guys suck im all bummed now

  26. #26
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    Quote Originally Posted by dirt farmer View Post
    I found this mentioned somewhere on the interwebs...

    "JB lists its strength at 3960 PSI, which is a little stronger than the
    best values for wood but less than bamboo. So it should be OK for a
    spruce, yellow pine or oak bicycle frame but inadequate a frame made
    of high-performance bamboo tubing."

    You really should test it out on a pine bike before you risk life and limb.
    .. the jb weld is there to keep the steel braces and hose clamps together...


    You guys may be right and i agree its not suitable for hard flat drops but ill keep it on and report back....



    i might hurt my self. ..... but it is mountain biking i get hurt all the time

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    Oh hell no, this is a very bad idea. Now go ride that thing and have next of kin report back.

  28. #28
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    Holy shyt...

    There are a bunch of people in here giving you solid feedback on the integrity of this "repair" and I sincerely hope you listen to them, OP.

    Why you would post this in the Beginner sub is mind blowing -- PLEASE anyone reading this don't do it.
    All good things in all good time

  29. #29
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    A few days of time to test the theory of repair integrity, but not having done so ... Hmmm.

    Maybe we're getting through

    OP,
    Are you still alive ?

  30. #30
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    I built a 3 foot drop to flat in my back yard ill post vid tommorow...... i wanted to give the cold weld time to cure......

  31. #31
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    Cure Time 15-24 Hours
    J-B Weld | Original Cold Weld Formula Steel Reinforced Epoxy

    Strength 3960 PSI
    I'm not going to encourage you to get hurt.

    Take a rubber mallet and smack it real hard

  32. #32
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    Quote Originally Posted by bikeabuser View Post
    I'm not going to encourage you to get hurt.

    Take a rubber mallet and smack it real hard

    The rubber mallet is for fixing flat spots in my rims.


    So i get a vid up of my back yard test .. then depending on the status Ill be taking it to Angle fire this weekend!!! Sweet

  33. #33
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    ^Sweet! Can't wait to see the vid...hopefully you prove some people wrong!
    "Let us not become weary in doing good, for at the proper time we will reap a harvest if we do not give up." Galatians 6:9

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    Please don't, your frame flexes, epoxy (what JB weld is, "cold welding" is an entirely different beast) has no flex. This WILL catastrophically fail.

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    Quote Originally Posted by NFLcheesehead1 View Post
    ^Sweet! Can't wait to see the vid...hopefully you prove some people wrong!
    Hopefully he doesn't get hurt.

  36. #36
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    Quote Originally Posted by bikeabuser View Post
    Hopefully he doesn't get hurt.
    Yeah, hopefully we hear back soon...I would definitely wear a helmet, probably a cup too
    "Let us not become weary in doing good, for at the proper time we will reap a harvest if we do not give up." Galatians 6:9

  37. #37
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    OP, you are beign irresponsibly STUPID, telling other people to actually go ahead and do this on other threads. Your actions go beyond trolling and could actually do bodily damage to other people. Go on and seriously hurt or kill yourself with your moronic "repair" if you so wish, but dont con others into doing it.

  38. #38
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    Quote Originally Posted by NFLcheesehead1 View Post
    Yeah, hopefully we hear back soon...I would definitely wear a helmet, probably a cup too
    If he's really not lucky, he'll be out a frame, rear wheel, or leg, as he attempts to keep riding an unrepairable frame

  39. #39
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    Quote Originally Posted by bikeabuser View Post
    If he's really not lucky, he'll be out a frame, rear wheel, or leg, as he attempts to keep riding an unrepairable frame
    If i loose the frame and rear wheel ill make a unicycle

  40. #40
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    This is not a question of if the bike will fail but when. It may not happen for a few rides or a few months, but when you go bombing down a fast downhill or off of a drop, I can guarantee that the bike will crack even further.

    Surprised you didn't use hot glue.
    '12 S-Works Stumpjumper carbon HT
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  41. #41
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    Quote Originally Posted by Mark in Baltimore View Post
    This is not a question of if the bike will fail but when. It may not happen for a few rides or a few months, but when you go bombing down a fast downhill or off of a drop, I can guarantee that the bike will crack even further.

    Surprised you didn't use hot glue.
    Don't be silly, hot glue doesn't have Weld in it's name!
    Tantrum incoming
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  42. #42
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    Quote Originally Posted by Mark in Baltimore View Post
    This is not a question of if the bike will fail but when. It may not happen for a few rides or a few months, but when you go bombing down a fast downhill or off of a drop, I can guarantee that the bike will crack even further.

    Surprised you didn't use hot glue.
    Uhhh ...

    1. All frames Fail eventually

    2. My frame was a loss. (I had no options to fix it legitimately)

    3. I don't actually think I fixed my frame, I'm just trying to stretch its life to the end of the season

    4. The JB Weld isn't doing anything(The steel splints and steel hose clamps are doing all the work)

    5. If I used hot glue it would have been a "hot" weld and not a cold one

  43. #43
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    Good job!

    First, I know this is a very poor test. The weekend is coming and so is Angle Fire!!!




    <iframe width="560" height="315" src="//www.youtube.com/embed/wvCBLI885xw?rel=0" frameborder="0" allowfullscreen></iframe>


    before


    <a href="http://s34.photobucket.com/user/mrpea9999/media/0626131901a.jpg.html" target="_blank"><img src="http://i34.photobucket.com/albums/d141/mrpea9999/0626131901a.jpg" border="0" alt=" photo 0626131901a.jpg"/></a>



    After... no real surprises yet

    <a href="http://s34.photobucket.com/user/mrpea9999/media/0626131848.jpg.html" target="_blank"><img src="http://i34.photobucket.com/albums/d141/mrpea9999/0626131848.jpg" border="0" alt=" photo 0626131848.jpg"/></a>

  44. #44
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    Where are you located...for the price of the JB weld and the two hose clamps you probably could have bought a new 18" section of tube and you could have found a guy like me to tig weld you in that new section for a six pack of beer and a couple hours of BS time.

    Not dissing your bravado or you McGyver ingenuity just saying it helps to ask before you leap sometimes. There's good people out there willing to give of their time and talent. Just saying is all....Carry on.
    My ride...Pro Flex Beast
    Wife's ride...Diamondback DBR-XR8

  45. #45
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    Ok, I'll be the first;
    That repair could possibly last a long time. Good luck man.

    (I'm not saying I would ride it, but I appreciate the effort!)

  46. #46
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    the chainstay has a pivot point on it don't know if that matters.
    i think the braces will hold it together long enough to get some extra mileage. I was looking at used frames on pink bike and ill be able to scoop up another drop to flat bike before im done with it.

    i live in albuquerque beer is standard currency

  47. #47
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    Quote Originally Posted by Fuglio View Post
    the chainstay has a pivot point on it don't know if that matters.
    i think the braces will hold it together long enough to get some extra mileage. I was looking at used frames on pink bike and ill be able to scoop up another drop to flat bike before im done with it.

    i live in albuquerque beer is standard currency
    Sure you'll get some extra mileage ... I've been saying eventually, all along.

    The thing is, how bad might you get hurt when it does fail !

    Glad you're looking for a replacement.

  48. #48
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    Nice vid, Looked pretty solid there
    "Let us not become weary in doing good, for at the proper time we will reap a harvest if we do not give up." Galatians 6:9

  49. #49
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    Quote Originally Posted by abelfonseca View Post
    OP, you are beign irresponsibly STUPID, telling other people to actually go ahead and do this on other threads. Your actions go beyond trolling and could actually do bodily damage to other people. Go on and seriously hurt or kill yourself with your moronic "repair" if you so wish, but dont con others into doing it.
    People dumb enough to trust every thing they read on the internet are probably not strangers to random bodily damage to begin with.

  50. #50
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    Quote Originally Posted by Fuglio View Post
    My frame rebelled against the poor treatment from me and developed a crack. Threatening to hurt me as well if i continued my abuse.
    Quote Originally Posted by Fuglio View Post
    i might hurt my self. ..... but it is mountain biking i get hurt all the time
    Let us know when it happens again

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  5. Repair a cracked weld
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