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i keep busting chainring bolts

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Old 01-05-11, 09:23 PM
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i keep busting chainring bolts



any idea why. its starting to drive me

edit: while riding D:
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Originally Posted by yummygooey
crabon/campy/rapha/roadie-bro.

next step is recumbent.




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Old 01-05-11, 09:27 PM
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More details? Perhaps some info about your spider, BCD, chainring, etc.
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Old 01-05-11, 09:33 PM
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I bet you're using aluminium chairing bolts, I've busted a few of those in the past and switching to steel bolts took care of that issue.

If you're using steel bolts already, then I think you're way too gnarly for your sweet fixies.
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Old 01-05-11, 10:08 PM
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stele bolts!

1/8th inch chainring (brand, and size)
sugino messenger crankset

this was the 4th one i busted today in a matter of months

i am a big guy, 6'3" 225.. too much mang for the sw8 fixie
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Originally Posted by yummygooey
crabon/campy/rapha/roadie-bro.

next step is recumbent.




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Old 01-05-11, 10:31 PM
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i think you need to stop riding for about 6 months... clearly your quads have become man mountains of meat and muscle and have the force to smash high-tensile steel bolts...
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Old 01-05-11, 10:39 PM
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Originally Posted by jdgesus
stele bolts!

1/8th inch chainring (brand, and size)
sugino messenger crankset

this was the 4th one i busted today in a matter of months

i am a big guy, 6'3" 225.. too much mang for the sw8 fixie
too buku!
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Old 01-05-11, 10:48 PM
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When you install the steel bolts, tighten them properly.
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Old 01-05-11, 10:59 PM
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Originally Posted by NikZak
clearly your quads have become man mountains of meat and muscle and have the force to smash high-tensile steel bolts...
Still using that hi-ten junk? Anybody who matters knows only the low quality bikes are made outta that stuff. Better get some carbon bolts, or at least titanium to withstand huge forces on your sweet fixxie.


(In all seriousness, get some steel bolts.)
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Old 01-05-11, 11:22 PM
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Clean / grease / tighten your chainring bolts once a month or so. Loose bolts = broken bolts.
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Old 01-05-11, 11:23 PM
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Take your chain ring off and make sure it isn't warped.
If it is bent then bolt is not going on far enough, and they will eventually break.

Also clean your ring and the bolt holes before you put the bolts in, and tighten them properly like several people have noted.
And don't just take replace the one bolt, take them off and replace them all and tighten them at the same time. In a star pattern like you would a car.
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Old 01-05-11, 11:31 PM
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Originally Posted by c0urt
Take your chain ring off and make sure it isn't warped.
If it is bent then bolt is not going on far enough, and they will eventually break.

Also clean your ring and the bolt holes before you put the bolts in, and tighten them properly like several people have noted.
And don't just take replace the one bolt, take them off and replace them all and tighten them at the same time. In a star pattern like you would a car.
I think this is key.
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Old 01-05-11, 11:46 PM
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Make sure when you put them on,

torque them down in the star pattern, Start with one. And draw a star. That way you apply even pressure on every bolt.

I forgot how many pound inches they are supposed to be torqued at.

I'll tell you when i see the chart at the shop.
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Old 01-06-11, 12:23 AM
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i pound inches all night long
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Originally Posted by yummygooey
crabon/campy/rapha/roadie-bro.

next step is recumbent.




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Old 01-06-11, 12:26 AM
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Old 01-06-11, 12:50 AM
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Sorry... you just aren't that awesome.

Follow the suggestions that have been given and the bolt breakage should stop.
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Old 01-06-11, 06:53 AM
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do you break teeth off cogs too?
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Old 01-06-11, 04:14 PM
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i break tines of forks when i eat.

am now swapping all bolts in star pattern scheme.
i'll even remove them in a star pattern, just upside down
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Originally Posted by yummygooey
crabon/campy/rapha/roadie-bro.

next step is recumbent.




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Old 01-06-11, 04:20 PM
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Originally Posted by jdgesus
i'll even remove them in a star pattern, just upside down
Be sure to Hail Satan while you do it.
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Old 01-06-11, 05:14 PM
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Originally Posted by jdgesus
i break tines of forks when i eat.
hardcore...........hardcore...
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Old 01-06-11, 07:21 PM
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...I must be doing it wrong...?
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