Bottom crank clicking noise

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IamGroot
Posts: 79
Joined: Wed Aug 10, 2016 8:52 pm
Location: Queensland

Bottom crank clicking noise

Postby IamGroot » Wed Jan 31, 2018 2:43 pm

Just replaced the bottom bracket on me Specialized 29er MB and its making a slight double clicking noise.
Before replacing the bracket it was using a cheapo Shimano Deore SM-BB52 68/73mm (that's what the bike shop recommended) and now I've fitted a Shimano XTR SM-BB93 68/73mm and its still making the noise but only a 10th of how it was before.
Closely followed the YouTube clips on the installation, no problems there but I'd love to have a silent crank.

Any suggestions to why the noise?

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Cheesewheel
Posts: 1120
Joined: Wed Nov 16, 2011 9:22 pm

Re: Bottom crank clicking noise

Postby Cheesewheel » Wed Jan 31, 2018 2:49 pm

Check the chainring bolts ... they can be sneaky because they can appear tight yet emit a click due to the amount of stress they are under.
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LG
Posts: 1663
Joined: Sat Nov 08, 2008 10:46 am
Location: Southeast Tasmania

Re: Bottom crank clicking noise

Postby LG » Wed Jan 31, 2018 6:18 pm

Last year I had a single 'tick' with each pedal rotation on xt cranks with xtr BB. Following much frustration and testing it was resolved by removing the drive side pedal, re-greasing the thread and re-installing on the crank.
LG = Low Gear

jackthelad
Posts: 339
Joined: Sat Nov 15, 2008 12:24 pm
Location: Perth, Western Australia

Re: Bottom crank clicking noise

Postby jackthelad » Fri Feb 02, 2018 5:20 pm

re grease the pedals and the chainring bolts, with antiseize.. in pedals , and standard, in bolts, they can squeak, if original, just with locktight
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Thoglette
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Joined: Thu Feb 19, 2009 1:01 pm

Re: Bottom crank clicking noise

Postby Thoglette » Sat Feb 03, 2018 12:42 am

Tighten everything. Including the seat bolts :oops:
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