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Diagnose Ominous Sound

Old 06-07-05, 11:03 AM
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ylanl
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Diagnose Ominous Sound

I have an old Univega mountain bike. It's recently started making these kind of cracking or knocking sounds when I'm pedaling, especially when I'm pushing hard. Since I can feel something through the cranks that corresponds to the sounds I'm assuming the problem is somewhere in the crank assembly. I cannot see anything visibly hitting anything else, nor can I see any cracks. Could it be the bearings? Any other ideas?
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Old 06-07-05, 11:14 AM
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supcom
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When is the last time the bottom bracket bearings were repacked?
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Old 06-07-05, 11:17 AM
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Does it seem to be associated with a particular side of the bike? It could be an issue with a pedal rather than the bottom bracket.
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Old 06-07-05, 11:19 AM
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https://www.parktool.com/repair_help/...queaking.shtml
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Old 06-07-05, 11:24 AM
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Good link!
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Old 06-07-05, 12:13 PM
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Hmmm... that would be never...
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Old 06-07-05, 12:15 PM
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Originally Posted by Noah Scape
Does it seem to be associated with a particular side of the bike? It could be an issue with a pedal rather than the bottom bracket.
It does seem to do it more on the right side, but the fact that it still does it on the left would seem to rule that out no?
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Old 06-07-05, 12:24 PM
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check your chain ring bolts
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Old 06-07-05, 12:41 PM
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If it is more of a creaking sound vs a knocking sound, I'd try snugging up the crankarms and see what happens.
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Old 06-07-05, 09:24 PM
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Does the creak happen when sitting, standing, or both?
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Old 06-07-05, 09:58 PM
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Originally Posted by Al1943
Does the creak happen when sitting, standing, or both?
Both--any time I'm pedaling.
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