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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 09-02-10, 03:59 PM   #1
bumblebeetuna
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Missing Chain ring bolt

I was investigating some new noises emanating from my bike and noticed that one of the bolts holding my chain ring on was missing. Is this just a freak incident or a sign that something is wrong? (i.e. bent chain ring, over tightened areas?) I have no idea so I thought I would ask the experts. Are the bolts just under way more stress on a fixed gear?
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Old 09-02-10, 04:04 PM   #2
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Just replace the bolt (or all of them).

Probably was just loose and fell out.
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Old 09-02-10, 04:06 PM   #3
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And be sure to grease the threads.
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Old 09-02-10, 04:09 PM   #4
John Montgomery
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That was the first, and only, thing to go wrong with my bike (knock on wood). I heard it happen and was lucky enough to find the parts. Tightened them up, trouble-free since.
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Old 09-02-10, 05:18 PM   #5
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and be sure to get steel bolts. Aluminum chainring bolts are asking for trouble.
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Old 09-02-10, 07:10 PM   #6
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Thanks everyone. Picked up some steel ones for $7. I'm just going to replace the one and tighten up the others for now. Hang on to the rest for some later date.

Last question, do you regularly check the bolts? Should I be checking this semi regularly?
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Old 09-02-10, 07:14 PM   #7
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Originally Posted by bumblebeetuna View Post

Last question, do you regularly check the bolts? Should I be checking this semi regularly?
eh
the last time I touched the bolts was over 6 months ago when I changed my chainring
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Old 09-03-10, 02:40 AM   #8
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eh
the last time I touched the bolts was over 6 months ago when I changed my chainring
If you install them right the first time, they never need to be checked. If you skimp on the torque, they can fall out.
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Old 09-03-10, 07:38 AM   #9
seau grateau
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Replace it right away. When this happened to me I kept riding on it, and ended up snapping one of the remaining 4 bolts and bending my chainring in half. This happened in traffic.
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Old 09-03-10, 11:20 AM   #10
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Make sure you use grease and a proper chainring bolt tool. They won't come out unless you want them to.
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