WTF happened here????- Mtbr.com
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  1. #1
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    WTF happened here????

    Taking a mellow late night cruise around the neighborhood. While I'm standing and mashing up a slight hill (34x20) I hear a loud BING!, Chain pops off, my left foot bounces off the ground and I smash the family jewels on the top tube. I manage to stop without falling, put the chain back on and limp home, hearing a pop every 2-3 revolutions. I look at the chain when I get home and find this:


    The chain is a KMC 1/8 Z410. I'm 6'3 & 220 and by no means a torque monster.

  2. #2
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    at least you were able to get it home. it was just the chain's time to go!

    i'm a big fan of SRAM chains. i hear people complain of the random stiff link, but i've never had any issues, even with a few sets of the $13 low-end PC1 chain.

  3. #3
    one chain loop
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    maybe a rock got wedged in between the plates and pried it open as it went to the cogs? looked like the chain suffered from a hit too (running over rocks). who knows.
    everything sucks but my vacuum cleaner.

  4. #4
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    you're lucky, when that happened to me I tore a 4 inch gash down one shin and carved an inch diameter hole in my other knee (down the adipose tissue, who knew there were no nerves there?) when one leg went through the main triangle and the rest of the bike tried to powerslide. (the shin caught the cable guides, the other knee got folded by the bike trying to lay itself down and I skidded on the knee alone for a couple feet)
    If steel is real then aluminium is supercallafragiliniun!

  5. #5
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    Is there a separate master link? If not it could be the link that was used to put the chain back together and the pin just wasn't in far enough or some how loosened up. I agree though, it may have just been its time to go.

    Pick up a nicer SRAM chain for around $40 and you should be good to go for quite some time.

  6. #6
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    I been running Sram 8-spd chains for years; done likewise to these, too. But not often. It's still my chain of choice. Love the PowerLink included with the chain. I've never thrown a PowerLink away, even when the chain becomes garbage due to stretch, so there's a ~15 year old PowerLink or two on my bikes. Have yet to break one of those.

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  7. #7
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    I had something similar happen to me. But it was all my fault. I tried to reuse a a chain pin, and now I know that was a bad idea. I stood up to pedal and *SNAP*. The chain flew apart. Funny thing is the bike wasn't even moving (first time I crashed without the bike moving, lol). I instantly went over the handle bars (and it happened very fast). Skinned up my knee pretty good, but I was okay. I didn't break any bones or require any stitches.

    Lesson learned: never reuse a chain pin.

  8. #8
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    it's a cheap chain, they put those chains on kids' bikes and granny beach cruisers. look into the kmc z610hx. it's a 3/32" version of the popular 510 bmx chain.

  9. #9
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    your using the wrong chain.
    <img src="https://www.connexchain.com/data-live-connex/images/Produkte/BMX/Connex-BMX-Fahrradkette-1g8.jpg">

  10. #10
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    Go with SRAM. I'm 210lb and a torque monster. Probably 50% of my weight is my legs... well ok... maybe not, but still powerfull non-the-less. Once or twice a week I purposely ride over geared just to keep from plateauing. I found SRAM chains to be more durable. I have not had good luck with Shimano and KMC. They are basically the same cuz KMC manufacturers shimano chains.
    "I think im gonna go to walmart and look at the mountain bikes and see if i can salvage the rear frame."- Nick_Knipp 3/21/12

  11. #11
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    Looks like I'll be picking up a SRAM. Thanks all! This chain only had one good ride on it. I actually put the same KMC on the Voodoo SS I'm building up so it will be a pair of SRAMs for me!

  12. #12
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    Going out on a limb here but everything except shimano=crap, no?
    D8 is now off the hook.

  13. #13
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    Quote Originally Posted by alivio
    Going out on a limb here but everything except shimano=crap, no?
    what?
    I bet you're on the left here
    <object width="464" height="383" id="276179" type="application/x-shockwave-flash" classid="clsid27CDB6E-AE6D-11cf-96B8-444553540000" alt="Branch Cutting Accident Funny Videos"><param name="movie" value="http://embed.break.com/Mjc2MTc5"></param><param name="allowScriptAccess" value="always"></param><embed src="http://embed.break.com/Mjc2MTc5" type="application/x-shockwave-flash" allowScriptAccess=always width="464" height="383"></embed></object><br><font size=1><a href="http://www.break.com/index/branch_cutting_accident.html" target="_blank">Branch Cutting Accident</a> - Watch more <a href="http://www.break.com/" target="_blank">Funny Videos</a></font>
    Honestly... ahh I give up

  14. #14
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    Quote Originally Posted by alivio
    Going out on a limb here but everything except shimano=crap, no?
    IMO that ain't a good limb to go out on. Personally I'll never buy a chain that requires me to purchase and use a special replacement pin every time I want to break the chain. My veins don't have Shimano blood in them, either. Nor will they ever.

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  15. #15
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    so lets get this straight , that's a BMX sized chain 1/8 chain right? I had that same chain and the same thing has happened to mine and that's why I only run 3/32 chains
    "If women don't find handsome , they should at least find you handy."-Red Green

  16. #16
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    it didn't fail because it's a 1/8in chain. it failed because it's KMC and was weakened by an impact. you can see the dent on the broken link.

  17. #17
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    Quote Originally Posted by alexrex20
    it didn't fail because it's a 1/8in chain. it failed because it's KMC and was weakened by an impact. you can see the dent on the broken link.
    so you dismiss someone else's BS to make up your own?
    Honestly... ahh I give up

  18. #18
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    Quote Originally Posted by highdelll
    so you dismiss someone else's BS to make up your own?

    if you want to ride KMC, that's your prerogative.

  19. #19
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    Quote Originally Posted by alexrex20
    it didn't fail because it's a 1/8in chain. it failed because it's KMC and was weakened by an impact. you can see the dent on the broken link.
    you try using a 1/8 in chain on a 3/32 drive train and see what happens, wore my aluminum chain ring down in a matter of months
    "If women don't find handsome , they should at least find you handy."-Red Green

  20. #20
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    Quote Originally Posted by alexrex20
    if you want to ride KMC, that's your prerogative.
    He's not disputing that. He's disputing your authority to declare your opinion superior to all others.

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  21. #21
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    Quote Originally Posted by nuck_chorris
    you try using a 1/8 in chain on a 3/32 drive train and see what happens, wore my aluminum chain ring down in a matter of months
    that's because you use an aluminum ring.

  22. #22
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    Quote Originally Posted by Sparticus
    He's not disputing that. He's disputing your authority to declare your opinion superior to all others.

    --Sparty

    what opinion? his chain is KMC. his chain failed.


  23. #23
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    Quote Originally Posted by alexrex20
    what opinion? his chain is KMC. his chain failed.

    I hope you're kidding. I'll take it from the smilies, that you are.
    Honestly... ahh I give up

  24. #24
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    could that result from bad chainline or a non-parallel (to the cranks) rear hub? i ask since something similar happened to me, except the whole outer side-plate flew off.

    20 mins into a ride, i started hammering up a hill, got a third of the way up and heard *POP*!! died out at 2/3rds and walked to the top, thats when I saw the side-plate missing. i managed to ride back without any issue (albeit slowly) and replaced the chain when i got home. fwiw, it was the stock chain on my '10 monocog, which i believe was KMC as well.
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  25. #25
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    You can see the tooth damage on the outer link plates. It's the lower run of chain.

    Bad chainline, loose chain or other worn parts could have caused it. If the chain climbed up on to a tooth of the chainring or cog, the chain would have to fail somewhere - probably at the pin used to re-join the chain.

    Edit: I use KMC chains and have no problems at all.
    Last edited by Zanetti; 06-30-2010 at 07:51 PM.

  26. #26
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    Quote Originally Posted by Zanetti


    You can see the tooth damage on the outer link plates. It's the lower run of chain.

    Bad chainline, loose chain or other worn parts could have caused it. If the chain climbed up on to a tooth of the chainring or cog, the chain would have to fail somewhere - probably at the pin used to re-join the chain.

    Edit: I use KMC chains and have no problems at all.
    If you refer to my original pic, the tooth damage is only on those two plates and I believe occurred when the link popped. What's odd was right before this happened, I was marveling to myself how quiet the drivetrain was. Sprocket & cog are fairly new. I run a master link. Looking at the bike tonight, I noticed a bit of wobble in the BB so possibly that, combined with mashing up the hill caused enough flexing? Who knows. I only dropped this chain once before.

  27. #27
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    Quote Originally Posted by alexrex20
    it didn't fail because it's a 1/8in chain. it failed because it's KMC and was weakened by an impact. you can see the dent on the broken link.

    Thats what I meant, why buy KMC when you can get a Shimano chain?? What can it possibly do better? In extreme emergencies you could run SRAM but why buy an SRAM chain on purpose?

    And now 2 people claim their KMC chains broke in the same way. Is it a fluke?
    Ok who wants to sign up a KMC rear derailleur? Exactly 0 people, I wonder why.
    D8 is now off the hook.

  28. #28
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    Uh...

    Quote Originally Posted by alivio
    ...why buy an SRAM chain on purpose?
    ...
    Because they work great.

    Quote Originally Posted by alivio
    ...
    And now 2 people claim their KMC chains broke in the same way. Is it a fluke?.
    ...
    I'll bet 2 or more people on this forum could cite failure of any chain on the market. No chain is perfect, some are worse than others.

    Quote Originally Posted by alivio
    ...
    Ok who wants to sign up a KMC rear derailleur? Exactly 0 people, I wonder why.
    Because KMC does not manufacture a derailleur.

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  29. #29
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    Quote Originally Posted by alivio
    Thats what I meant, why buy KMC when you can get a Shimano chain?? What can it possibly do better? In extreme emergencies you could run SRAM but why buy an SRAM chain on purpose?

    And now 2 people claim their KMC chains broke in the same way. Is it a fluke?
    Ok who wants to sign up a KMC rear derailleur? Exactly 0 people, I wonder why.
    DOOD!
    STFU!!!
    Why buy KMC? Why the fuk not? SRAM as well.
    What the fuk is up with your hard-on for Sh!tmano?

    There is no better "Brand" - well, actually, you may have a point with SRAM and the way they 'punch' their pins (except for hollow pins - but they're weaker anyway); but KMC and Shimano are nearly Identical in most cases. (obviously barring the OP's chain)
    Center punch - pic below

    Sh!tmano makes 'crap' chains too (so does SRAM and KMC), but I'd be willing to bet that there are more shimano failures due to 'operator error' of the pin installation and SRAM failures, possibly, to their side 'punch' (72, where you at?) than KMC.
    It is not about the brand

    Notice BTW...A KMC chain, A SRAM cassette, and a Shimano derailleur...up is down, left is right, cats chasing dogs
    Last edited by highdelll; 07-01-2010 at 01:34 PM.
    Honestly... ahh I give up

  30. #30
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    Quote Originally Posted by highdelll
    STFU!!!
    NO U!


    Quote Originally Posted by highdelll
    hollow pins
    LOL
    D8 is now off the hook.

  31. #31
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    Quote Originally Posted by alivio
    Thats what I meant, why buy KMC when you can get a Shimano chain?? What can it possibly do better? In extreme emergencies you could run SRAM but why buy an SRAM chain on purpose?

    And now 2 people claim their KMC chains broke in the same way. Is it a fluke?
    Ok who wants to sign up a KMC rear derailleur? Exactly 0 people, I wonder why.
    I guess you missed it. KMC manufacturers Shimano chains.
    "I think im gonna go to walmart and look at the mountain bikes and see if i can salvage the rear frame."- Nick_Knipp 3/21/12

  32. #32
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    Quote Originally Posted by 6bobby9
    I guess you missed it. KMC manufacturers Shimano chains.
    D'oh! I was gonna suggest the whole parent-manufacturing aspect, but I had no info
    Honestly... ahh I give up

  33. #33
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    You had no clue you mean
    D8 is now off the hook.

  34. #34
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    Quote Originally Posted by alivio
    You had no clue you mean
    No, rather, I was willing to bet that parts like chains, bearings, etc are made by a number of other industrial factories and I would not be the least bit surprised if KMC, Shimano and SRAM ALL came from the same place with their respective names stamped on the plates.
    This is common in ALLLLL of industry (with maybe two or three factories making stuff for hundreds of companies)

    You, my man, are the one who appears 'clueless'
    I just don't have info as who makes this and that; but I have a fundamental understanding of how sh!t is done.
    Honestly... ahh I give up

  35. #35
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    Quote Originally Posted by 6bobby9
    I guess you missed it. KMC manufacturers Shimano chains.

    That really does not mean anything. Product X is made by factory Y who also makes product XX, that does not automatically mean product XX is of the same quality.
    This happens in pretty much all indutries and whatnot, ah its made in the same factory that makes product whatever.... it don´t mean jack, cos if it was made to the same quality it would have the "good" brands name on it from the start. A trusted brand is always the safest bet for factories.
    D8 is now off the hook.

  36. #36
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    I think most of us would be unpleasantly surprised on who exactly makes what for who. Take a look at carbon legged rigid forks with a half dozen different names on them. This is reason I didn't buy a Stans 650b rim for my new wheel once I found out who fabs them.

    I've ridden Shimano, KMC, and SRAM chains, never a problem with any of them really.

  37. #37
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    Yeah you probably have a point there. dell
    D8 is now off the hook.

  38. #38
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    Quote Originally Posted by stumonky
    This is reason I didn't buy a Stans 650b rim for my new wheel once I found out who fabs them.
    Who??
    D8 is now off the hook.

  39. #39
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    Quote Originally Posted by alivio
    Yeah you probably have a point there. dell
    OK, thanks , but one more thing...If you're gonna argue that Sh!tmano is better than everyone else, at least have 'XTR' or 'Dura-Ace' as your S/N!
    Or maybe SCrAM...
    Honestly... ahh I give up

  40. #40
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    Quote Originally Posted by alivio
    That really does not mean anything. Product X is made by factory Y who also makes product XX, that does not automatically mean product XX is of the same quality.
    This happens in pretty much all indutries and whatnot, ah its made in the same factory that makes product whatever.... it don´t mean jack, cos if it was made to the same quality it would have the "good" brands name on it from the start. A trusted brand is always the safest bet for factories.
    all true, but that still does not at all support the blanket statements you made before about brands, because KMC can and does make vastly different levels of chains under their own brand too, just like they do for Shimano.

    KMC gets a bad rap because many of their chains that SSers buy are low-end SS chains competing on price alone, just like the equally crappy and equally disliked SRAM PC-1. Buy a nicer KMC chain sometime and you will be pleasantly surprised. I had a 9spd chain from them that was great

  41. #41
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    SRAM 8 speed is where it's at

  42. #42
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    Quote Originally Posted by TXDirtDawg
    SRAM 8 speed is where it's at
    Honestly... ahh I give up

  43. #43
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    Quote Originally Posted by TXDirtDawg
    SRAM 8 speed is where it's at
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  44. #44
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    Quote Originally Posted by TXDirtDawg
    SRAM 8 speed is where it's at
    strongly agreed

    (and I'm not doing it just to fit in )

  45. #45
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    TXDirtDawg's got a fanbase!! WOOT WOOT!!!!!!!!
    You can party w/ us boomn!
    Honestly... ahh I give up

  46. #46
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    Quote Originally Posted by alivio
    Thats what I meant, why buy KMC when you can get a Shimano chain?? What can it possibly do better? In extreme emergencies you could run SRAM but why buy an SRAM chain on purpose?

    And now 2 people claim their KMC chains broke in the same way. Is it a fluke?
    Ok who wants to sign up a KMC rear derailleur? Exactly 0 people, I wonder why.

    do you have the Shimano logo tattooed on your forehead?

  47. #47
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    Not for nothing guys, but I paid about $8 for that chain and got what I deserved for cheaping out. Now I'm waiting for my SRAM 8 spd to arrive which I'm hoping for a lot more from and should be after reading some of these replies, so all you brand fanatic irate mofo's STFU and get out and ride!

    And "Alivio" is a lame ass name for a MTB forum. (And I thought SeaBass_ was bad!) Alivio would be better off in the Hybrid forum!

  48. #48
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    Quote Originally Posted by alivio
    Thats what I meant, why buy KMC when you can get a Shimano chain?? What can it possibly do better? In extreme emergencies you could run SRAM but why buy an SRAM chain on purpose?

    And now 2 people claim their KMC chains broke in the same way. Is it a fluke?
    Ok who wants to sign up a KMC rear derailleur? Exactly 0 people, I wonder why.
    this is the single speed forums, no one buys derailleurs here!
    "If women don't find handsome , they should at least find you handy."-Red Green

  49. #49
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    Quote Originally Posted by nuck_chorris
    this is the single speed forums, no one buys derailleurs here!
    LOL! Nuck, you hit that one outta the park!

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  50. #50
    smell the saddle...
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    derailleurs are for cheaters.

  51. #51
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    cheaters are fun for a bit...but get too 'adventuresome' - some doods get mad... ....zsceeesh!
    [Control your wife! - It's not my fault I have a big cog!]
    Honestly... ahh I give up

  52. #52
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    Quote Originally Posted by SeaBass_
    Not for nothing guys, but I paid about $8 for that chain and got what I deserved for cheaping out. Now I'm waiting for my SRAM 8 spd to arrive which I'm hoping for a lot more from and should be after reading some of these replies, so all you brand fanatic irate mofo's STFU and get out and ride!

    And "Alivio" is a lame ass name for a MTB forum. (And I thought SeaBass_ was bad!) Alivio would be better off in the Hybrid forum!

    LOL any more insults? Keep em coming. Its not my fault that in this very case my personal opinion happend to be a fact of reality.

    Now I'm gonna go hang out with the cool dudes in the hybrid forum, wherever that is.

    The bashing will continue until quality improves.
    D8 is now off the hook.

  53. #53
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    Quote Originally Posted by alivio
    LOL any more insults? Keep em coming. Its not my fault that in this very case my personal opinion happend to be a fact of reality.

    Now I'm gonna go hang out with the cool dudes in the hybrid forum, wherever that is.

    The bashing will continue until quality improves.
    not to insult you buy weren't Alivio bottom of the barrel components back in the day ? i believe they still are, not to say they are worse than Altus. maybe equal
    "If women don't find handsome , they should at least find you handy."-Red Green

  54. #54
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    Quote Originally Posted by nuck_chorris
    not to insult you buy weren't Alivio bottom of the barrel components back in the day ? i believe they still are, not to say they are worse than Altus. maybe equal
    Alivio is the sh1t and you know it.
    D8 is now off the hook.

  55. #55
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    Quote Originally Posted by alivio
    Alivio is the sh1t and you know it.
    I guess, ive had and Alivio hub on my bike that's lasted quite a while ,sure ive replaces the bearings ,axle, and freehub but that's not to say the hub doesn't suck right?
    "If women don't find handsome , they should at least find you handy."-Red Green

  56. #56
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    I think KMC made that hub for Shimano

  57. #57
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    Quote Originally Posted by nuck_chorris
    I guess, ive had and Alivio hub on my bike that's lasted quite a while ,sure ive replaces the bearings ,axle, and freehub but that's not to say the hub doesn't suck right?
    I think its the same with KMC chains, they break a lot but that doesn´t prevent them from being good right.
    D8 is now off the hook.

  58. #58
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    Quote Originally Posted by alivio
    I think its the same with KMC chains, they break a lot but that doesn´t prevent them from being good right.
    I was being sarcastic, if you have to replace the axle then this thing is pretty much crap, i just cant afford a better one, till i get a job
    "If women don't find handsome , they should at least find you handy."-Red Green

  59. #59
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    All my chains are KMC and I've had no problems with any of them.

  60. #60
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    Quote Originally Posted by nuck_chorris
    I was being sarcastic, if you have to replace the axle then this thing is pretty much crap, i just cant afford a better one, till i get a job
    d00d, you've got the tools, now stop watching daytime TV and hangin' on MTBR and go get a flippin' job!

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    We get old because we quit riding.

  61. #61
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    Yeah you really need to get a job so you can buy delicious XTR stuff.
    D8 is now off the hook.

  62. #62
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    Quote Originally Posted by SeaBass_
    Taking a mellow late night cruise around the neighborhood. While I'm standing and mashing up a slight hill (34x20) I hear a loud BING!, Chain pops off, my left foot bounces off the ground and I smash the family jewels on the top tube. I manage to stop without falling, put the chain back on and limp home, hearing a pop every 2-3 revolutions. I look at the chain when I get home and find this:


    The chain is a KMC 1/8 Z410. I'm 6'3 & 220 and by no means a torque monster.


    Looks like you done broke your chain!!

  63. #63
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    A KMC fan here. SRAM has failed me SS and geared.

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  64. #64
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    Quote Originally Posted by pacman
    A KMC fan here. SRAM has failed me SS and geared.

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    The cage looks tweaked and the chain looks dry. My guess is it wasn't the chain's fault.
    Last edited by bad mechanic; 07-05-2010 at 11:03 AM.

  65. #65
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    Quote Originally Posted by stumonky
    derailleurs are for cheaters.
    then so are eliptical chainrings!

  66. #66
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    Quote Originally Posted by byknuts View Post
    you're lucky, when that happened to me I tore a 4 inch gash down one shin and carved an inch diameter hole in my other knee (down the adipose tissue, who knew there were no nerves there?) when one leg went through the main triangle and the rest of the bike tried to powerslide. (the shin caught the cable guides, the other knee got folded by the bike trying to lay itself down and I skidded on the knee alone for a couple feet)

    wow..were you climbing and standing up on the pedals when the chain broke ??

  67. #67
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    HaHaHaaaaaaaaaaaaAaaaaaaaaaaaaa



    Had that happen while out on my geared death wagon had to take off the lil ring.

  68. #68
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    lol. brand wars.

    i'm pretty sure i've broken at least one of every major brand, in a variety of different models.

    wippermann is next.

  69. #69
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    Quote Originally Posted by Mr.Bee View Post
    HaHaHaaaaaaaaaaaaAaaaaaaaaaaaaa

    Had that happen while out on my geared death wagon had to take off the lil ring.
    Dang, that always sucks. I had something similar happen a couple years ago and thankfully I was able to bash it flat again and remount it. Never underestimate rocks, our oldest hand tool

  70. #70
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    Been running KMC for the past 4-5 years with no problems. That is after I broke 2 shimano chains in a row.

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    Quote Originally Posted by brent878 View Post
    Been running KMC for the past 4-5 years with no problems. That is after I broke 2 shimano chains in a row.
    What model KMC ??

  72. #72
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    I agree that the chain looks like it has had some sort of impact that likely caused it to fail. I have had great results with the KMC 1/8" chains on my SS - I'm about 190 and grind up a lot of hills, and can climb pretty strong/steep on my bike when I have been getting the miles on and am fit. I've never "snapped" a SRAM chain, but have had 2 of the PC-1s that the bushings disintegrated on - was able to limp out on them but it required pushing up a couple of hills. After two, I stopped using them. I've had zero problems with the KMC chains, and have even been running the "cheap" (I'd say low-cost) 410 models. Thousands of miles.
    R.I.P. Corky 10/97-4/09
    Disclaimer: I sell and repair bikes for a living


  73. #73
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    Quote Originally Posted by ATBScott View Post
    ...PC-1s...
    There's your problem. The PC-1 chain is rubbish.

  74. #74
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    Quote Originally Posted by bad mechanic View Post
    There's your problem. The PC-1 chain is rubbish.
    Yep, PC-1 is the loser, dropout brother of the SRAM chain family. It's a shame how they give a bad name to the rest of the good SRAM chains

  75. #75
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    A chain is as strong as its weakest link. I have ridden bikes for 35 years, never had a chain break on me. I have used all makes of chain, have been unable to tell any difference between any make/model whilst riding.

    I guess it's just lucky that I haven't dropped on a weak link.

    If you think about all the chains made, there are bound to be some links thst aren't quite as strong. Unless all links are tested after manfacture then there will always be a risk that a substandard link has made it into the retail box.

    How many of us check every link in a new chain?
    How many of us check every link when we clean & lube up.

    To sum up, we are all at risk of this, gonad bashing roulette.

  76. #76
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    I ride a lot of fixed breakless mtb and I have snapped,exploded several 3/32's of random brands if you want the end all of end all get a Gusset Slink halflink or go to 1/8
    it's tested at 1300lbs

    Yes heavy but sometimes or most the time for me the chain is your life line.

  77. #77
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    Quote Originally Posted by pacman View Post
    A KMC fan here. SRAM has failed me SS and geared.

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    A picture is worth a thousand words.
    Looks like you were running that SRAM chain on a Shimano derailleur. That was likely the cause of the break.

    Noob.

    Edit: Noooo! I quoted a reply from last year! Haha! Guess that's what I get for being a smartarse.

  78. #78
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    Quote Originally Posted by Mr.Bee View Post
    I ride a lot of fixed breakless mtb and I have snapped,exploded several 3/32's of random brands if you want the end all of end all get a Gusset Slink halflink or go to 1/8
    it's tested at 1300lbs

    Yes heavy but sometimes or most the time for me the chain is your life line.
    Half link chains are pretty pointless, and needlessly heavy. Also, 1/8" chains aren't stronger than a good 3/32" chain. You want a strong chain? Go with a good 3/32".

  79. #79
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    Quote Originally Posted by bad mechanic View Post
    Half link chains are pretty pointless, and needlessly heavy. Also, 1/8" chains aren't stronger than a good 3/32" chain. You want a strong chain? Go with a good 3/32".

    Pointless and heavy? Im guessing you don't ride ss or fixed, no?

  80. #80
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    You're very lucky that the chain did not mess up your derailleurs. That happened to me when my chain link failed, and it took out my rear derailleur when the half-broken chain stuck in the derailleur when I was climbing a hill.

  81. #81
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    Quote Originally Posted by Mr.Bee View Post
    Pointless and heavy? Im guessing you don't ride ss or fixed, no?
    Heh. I ride SS almost exclusively.

    There's really no point to a half link chain. Any more than a single half link in a chain is pointless from a chain adjustment standpoint. They also a lot heavier and are many have reported they stretch faster than a standard chain. The only application where they might make sense is when you're grinding on the chain, and need more material in it.

    Regarding 1/8" chains, this is what Surly says:
    "1/2x1/8" chains suck. Run whatever you want, but bigger isn't better here. Yeah, they're wider, but according to manufacturer-supplied data, they're not stronger and they are definitely not of better quality. Multi-speed drivetrains is where the bucks are at, and chains that work on such drivetrains are where the manufacturers of chains showcase their innovations and developments in quality. The rollers are better, the plates are better, the pins are stronger, and the construction method (riveting procedure) is better on all multi-speed 3/32" chains. I guess if you grind your chainring and chain down the handrail every night at the local pub, a bigger 1/2x1/8 " chain will last longer, but most of us don't and it won't."

  82. #82
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    Quote Originally Posted by bad mechanic View Post
    Heh. I ride SS almost exclusively.

    There's really no point to a half link chain. Any more than a single half link in a chain is pointless from a chain adjustment standpoint. They also a lot heavier and are many have reported they stretch faster than a standard chain. The only application where they might make sense is when you're grinding on the chain, and need more material in it.

    Regarding 1/8" chains, this is what Surly says:
    "1/2x1/8" chains suck. Run whatever you want, but bigger isn't better here. Yeah, they're wider, but according to manufacturer-supplied data, they're not stronger and they are definitely not of better quality. Multi-speed drivetrains is where the bucks are at, and chains that work on such drivetrains are where the manufacturers of chains showcase their innovations and developments in quality. The rollers are better, the plates are better, the pins are stronger, and the construction method (riveting procedure) is better on all multi-speed 3/32" chains. I guess if you grind your chainring and chain down the handrail every night at the local pub, a bigger 1/2x1/8 " chain will last longer, but most of us don't and it won't."

    Heh. I ride fixed mtb almost exclusively.
    and I guess I have bad luck then or I just suck, I have broken several chains and I dont grind rails some rocks.
    Like I said when your fixed breakless your chain is rather important I'll go for the redundantly pointless that's tested at 1300lb not 800.

  83. #83
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    Quote Originally Posted by SeaBass_ View Post
    Taking a mellow late night cruise around the neighborhood. While I'm standing and mashing up a slight hill (34x20) I hear a loud BING!, Chain pops off, my left foot bounces off the ground and I smash the family jewels on the top tube. I manage to stop without falling, put the chain back on and limp home, hearing a pop every 2-3 revolutions. I look at the chain when I get home and find this:


    The chain is a KMC 1/8 Z410. I'm 6'3 & 220 and by no means a torque monster.
    Generally I only use Shimano chains with Shimano drivetrains; especially 9 speed. I use SRAM for my vintage 6 speeds and occasionally SS. In regards to your broken chain, the Z410 pins are not well riveted; your chain shows what I believe to be the obvious signs of sucking up a rock (or some other small hard object), which popped the side plate off the pin. With KMC you get what you pay for and the Z-410 is a $4 chain. If you want cheap heavy duty chain (with bulls-eye riveting), the KMC Z-710 @$12; it weighs a ton, but you'll likely not break it. Or for the same price and a bit lighter, there is the Z510HX; the 3/32 version is the Z610HX, which is one of the more popular SS chains from KMC. SRAM does make a good strong 8 speed chain (PC 870) that works well in SS application, but it's about $5 more. The top SRAM chain for SS would be the 890, which are about $30, but have harder pins and better plating so they tend to hold up better in wet conditions. It's the old adage, "You pay your money and make your choice."
    Just one more rep and I get the toaster!

  84. #84
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    Quote Originally Posted by Mr.Bee View Post
    Heh. I ride fixed mtb almost exclusively.
    and I guess I have bad luck then or I just suck, I have broken several chains and I dont grind rails some rocks.
    Like I said when your fixed breakless your chain is rather important I'll go for the redundantly pointless that's tested at 1300lb not 800.
    Cute.

    1300 lbs isn't all that much. The KMC 610, a 3/32" SS chain, is rated at 1,200 kg, or just over 2,600 pounds tensile strength. I'd venture to guess your chain braking issues were either because of cheap chains, or symptomatic of another issue (which the wider chain might now be masking).
    Last edited by bad mechanic; 10-03-2011 at 07:02 AM.

  85. #85
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    Quote Originally Posted by bad mechanic View Post
    Cute.

    1300 lbs isn't all that much. The KMC 610, a 3/32" SS chain, is rated at 1,200 kg, or just over 2,600 pounds tensile strength. I'd venture to guess your chain breaking issues were either because of cheap chains, or symptomatic of another issue (which the wider chain might now be masking).
    Lose your breaks and freewheel and come to the dark side cutie pie,

  86. #86
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    Quote Originally Posted by aka brad View Post
    Generally I only use Shimano chains with Shimano drivetrains; especially 9 speed. I use SRAM for my vintage 6 speeds and occasionally SS. In regards to your broken chain, the Z410 pins are not well riveted; your chain shows what I believe to be the obvious signs of sucking up a rock (or some other small hard object), which popped the side plate off the pin. With KMC you get what you pay for and the Z-410 is a $4 chain. If you want cheap heavy duty chain (with bulls-eye riveting), the KMC Z-710 @$12; it weighs a ton, but you'll likely not break it. Or for the same price and a bit lighter, there is the Z510HX; the 3/32 version is the Z610HX, which is one of the more popular SS chains from KMC. SRAM does make a good strong 8 speed chain (PC 870) that works well in SS application, but it's about $5 more. The top SRAM chain for SS would be the 890, which are about $30, but have harder pins and better plating so they tend to hold up better in wet conditions. It's the old adage, "You pay your money and make your choice."
    Thanks Brad. I posted that 16 months ago. That was truly a lesson learned in "You get what you pay for". I don't scrimp on chains anymore!

  87. #87
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    Quote Originally Posted by SeaBass_ View Post
    Thanks Brad. I posted that 16 months ago. That was truly a lesson learned in "You get what you pay for". I don't scrimp on chains anymore!
    My bad. Sometimes I forget that people tend to resurrect these posts long after they were discontinued. Glad you're buying a better chain; hopefully there have been no more rapid meetings between your top tube and junk; what chain did you decide on?
    Just one more rep and I get the toaster!

  88. #88
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    While what Surly says about the 3/32" chain being more "engineered" and perhaps better quality than a 1/8" I might agree with, but looking at the drivetrain as a system, I have this argument for 1/8" on SS:
    The wider tooth face and bushing width on the 1/8" chain and also 1/8" chainring/cog will wear a lot longer than the same-tooth-count 3/32". More material in the tooth to take the load and distribute the wear. I've been able to get years from a 1/8" ring and cog, where I would go through the 3/32" in 8 to 10 months. And I'm pretty anal about maintaining and checking my chains too. They're heavier, but give me a steel rear cog any day for my SS... Smaller/light riders might get away with 3/32" for regular riding, and even big guys could race on the narrower chains and cogs, but for a "put it on and run it forever" set-up, I'll go with a fat chain :}
    R.I.P. Corky 10/97-4/09
    Disclaimer: I sell and repair bikes for a living


  89. #89
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    Quote Originally Posted by aka brad View Post
    My bad. Sometimes I forget that people tend to resurrect these posts long after they were discontinued. Glad you're buying a better chain; hopefully there have been no more rapid meetings between your top tube and junk; what chain did you decide on?

    PC-850 with a Mono Veloce ring and a Surly cog. It's been quiet and trouble free.

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