MIKEY172
stranger
Reged: 17/05/2008
Posts: 12
Loc: Leuchars,Scotland
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Hi people
Got on my bike today for a quick ride to the shops and my cranks started making a really bad creaking sound.
It only happens when I put load on the cranks, it's not the pedals as i've checked them, sounds like the BB.
Anyone had this before?
Cheers Mikey
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Sir_Queuesalot
veteran
Reged: 05/12/2007
Posts: 1354
Loc: Cheshire Congleton ain't posh!
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Yep,
What kind of crank is it Mikey?
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My LBS couldn't fix my brakes so they made my bell louder..... 
Smoke me a kipper, I'll be back for breakfast!!
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MIKEY172
stranger
Reged: 17/05/2008
Posts: 12
Loc: Leuchars,Scotland
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Shimano Alivio, Think they are Square taper by looking at them. The bike is a Giant XTC 4.5, the cranks and BB were changed by Giant due to failure of the old ones (Truvativ Isoflow)
My mate thinks if I take the cranks off and lube them a bit it might help.
The bike has been sitting for a few days but was fine last night when out for a test ride
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Sir_Queuesalot
veteran
Reged: 05/12/2007
Posts: 1354
Loc: Cheshire Congleton ain't posh!
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Mikey,
Basically your mates kind of right there.
If you've got the right crank extractor tool I'd spin off both sides, slap a bit of copper grease on each side of the square taper - not much mind, just a small smear, and then tighten everything back up again, nice and tight - tighter than that... go on a bit more....
Having said that, when you've got everything of the BB just give the shaft a spin, it shouldn't be grindy or graunchy at all but smooth and feel a bit viscous to turn. if it's anything but nice the problem is with you BB as well.
--------------------
My LBS couldn't fix my brakes so they made my bell louder.....
Smoke me a kipper, I'll be back for breakfast!!
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MIKEY172
stranger
Reged: 17/05/2008
Posts: 12
Loc: Leuchars,Scotland
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Thanks for your help Sir, I'll go and get a crank tool from a shop somewhere. Sounds like I'm gonna need it from time to time. Going to Laggan Wolftracks on Sat so need it fixed by then.
Am I right in thinking It's not doing any damage just more annoying than anything?
Cheers again
Mikey
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Sir_Queuesalot
veteran
Reged: 05/12/2007
Posts: 1354
Loc: Cheshire Congleton ain't posh!
|
|
I'd check it out sooner rather than later.
If the crank is loose on the shaft then yes you stand the chance of damaging the crank arm/s by having it wear away against the shaft.
If all is tight and it's a BB issue then it's certainly not going to get any better onits own.
Halfords sell reasonably priced basic tools like this
http://www.chainreactioncycles.com/Models.aspx?ModelID=7857
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My LBS couldn't fix my brakes so they made my bell louder.....
Smoke me a kipper, I'll be back for breakfast!!
|
MIKEY172
stranger
Reged: 17/05/2008
Posts: 12
Loc: Leuchars,Scotland
|
|
Thanks for the help guys. Got a crank tool on the way to Laggan and took the cranks off in the car park. The BB was a wee bit loose so tightened that up and put some copper slip on the square drive. 2 runs of the red trail later and all is well.
Thanks again.
Mikey
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