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[Closed] Cracking sound from BB

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[#1873515]

Took out the HT for the first time since the end of the properly bad weather (i.e. April) and the BB is making a strange cracking noise. Likely to be fixed by a regrease or is it a bin & replace?


 
Posted : 08/08/2010 6:40 pm
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my bike does this, could be the bearings wearing ? try that or get a new bb or check ur chain ring bolts ive heard that can be a problem of this noise also, happens when pedaling hard ?


 
Posted : 08/08/2010 7:18 pm
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Yeah, usually when there's some pressure (mostly uphill rather than spinning along the flat). Pretty sure most stuff is tight but I'll try everything again.


 
Posted : 08/08/2010 7:23 pm
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yeh happens on my bike if your in a high gear and ur trying to climb " not that i do climb in a high gear" but it tends to happen, try take ur bb out and grease bearings, and replace, if problem occurs try new ones


 
Posted : 08/08/2010 7:24 pm
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Bearings might be breaking up. Is there any play if you grab the cranks and try to move from side to side ? If there's play then the BB is shagged.


 
Posted : 08/08/2010 7:28 pm
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Doesn't seem to be any play. If there was I'd have thrown the lot but it's just the noise...


 
Posted : 08/08/2010 7:33 pm
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aye no play on mine just the god dam noise, put your bike in a padded cell ๐Ÿ™‚


 
Posted : 08/08/2010 7:34 pm
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Well, I was expecting a shagged BB after a winter of wet, sandy and muddy riding because it's a raceface xtype :/


 
Posted : 08/08/2010 7:35 pm
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mines a hope ceramic ive had it for about 2 year though so its not done so bad especially through the weather we have had etc


 
Posted : 08/08/2010 7:38 pm
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Has the crank/spline interface dried up? Suggest removing cranks, cleaning & reasembling using a smear of copaslip.

FWIW my old Shimano XT octalinks creaked from new, but they were a bit notorious for doing that.


 
Posted : 08/08/2010 8:10 pm
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Another classic cause is one slack chainring bolt, does it happen in all rings? try loosening and retightening them, it'll only take you a minute and might sort it.


 
Posted : 08/08/2010 8:30 pm