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Creaking bottom bracket under load

Old 06-22-09, 09:47 PM
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livestrong2
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Creaking bottom bracket under load

I have replaced Sram bottom bracket on my 07 Tarmac Pro and still get creaking/rattling noise when I put a load on pedals, mainly non-drive side. Is thread tape a good fix for this or is it better to use anti-seize or blue thread locker on the bearing cups?
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Old 06-23-09, 08:50 AM
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The tape is the best idea, because there's a good chance that the noise isn't coming from there anyway. You don't want to do anything irreversible until you really know what the problem is.
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Old 06-23-09, 08:58 AM
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If you have a new BB installed (I assume properly?) and the problem is the same, what makes you think it's from the BB?
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Old 06-23-09, 09:02 AM
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Inspect your frame. A friend of mine had his seattube pop out from his BB shell. He was saying similar things about noises and fixing the BB did not help any.
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Old 06-23-09, 09:27 AM
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livestrong2
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The reason I think it is the bottom bracket is I can get the same noise by sitting on bike & applying pressure to pedals. Yes I have tried another set of pedals and can also get noise by straddling bike and not sitting on seat and pressing pedals.
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Old 06-23-09, 04:19 PM
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calvin17d
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could it be a slight bit of play in your crank arms rubbing on the spindle. I had this problem, pulled the cups and greased em then lubed up the square taper before torquing down the crank arms. Problem fixed! I hate a noisy bike! Nothing like knowing if you needed your two wheeled partner to complete clandestine operations she's up to the challenge and wont squeal on ya when youre taking fire.
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Old 06-23-09, 05:10 PM
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Check the easy fixes first:
~Skewers tight enough? (I just spent more than $300 on parts, and my creak ended up being a $#^%$ rear skewer that was working loose under my mashing. (And I was POSITIVE it was the BB.))
~Headset parts & bushings clean, lightly greased and properly torqued?
~Does the sound happen when you pedal standing only or while seated also? Only while seated, but not while standing?
~Try pedaling one legged and while sitting up with no hands on the bars.
~Put a drop of Tri-flow (or your favorite chain lube) on each chainring bolt mount point between the large & small chainrings.

https://www.sheldonbrown.com/creaks.html

Good luck and keep us abreast!
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