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Old 08-14-09, 03:12 PM   #1
takl23
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Creak from BB area...

Only when I'm out of the saddle and when the right pedal bottoms out on the stroke. Never when I'm on the trainer, or sitting not matter how hard I hammer. Thoughts?

Tim
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Old 08-14-09, 03:14 PM   #2
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You may find the following links helpful in tracking it down:

http://sheldonbrown.com/creaks.html

AND

http://www.parktool.com/repair/readhowto.asp?id=123

It's usually just a matter of patiently removing, cleaning,
re-lubing, and re-torquing fasteners until it quiets down.
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Old 10-15-09, 08:20 AM   #3
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Up !

I've been reading many posts and Sheldon's article, but couldn't find the answer to my problem...

I have a 2009 fuji track, fixed, stock BB, stock cranks, new pedals (mks GR9).
I've been experiencing a creak in the BB area for a few days now. It occurs on the first or the second time i push forward on the left crank (when it's at 9 o'clock), and the first time i push backward an the left (when it's at 3 o'clock).
I'm quite sure it's not the pedal because the noise was already there before i changed pedals, and i'm absolutely sure it's not the seat/seatpost because i'm standing on the pedals when it occurs.
I have already greased ant tighten the pedals, cranks and BB, but maybe it is not well done because i don't have a torque wrench yet.
Right crank doesn't creak at all, not matter how hard i push on it.

Any ideas ?
thanks in advance.
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Old 10-15-09, 10:47 AM   #4
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if its an older aluminum or carbon frame the actual frame could be making noise under flex, but first check pedals and then pull the b.b. to check for any internal play on the bearings. If everything checks out then torque it to correct specs, usually 350 to 400 pounds. If you still have noise it is most like the frame at the point, make sure you check for stress cracks. Any shop should be able to find those on the spot for you.
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Old 10-15-09, 10:48 AM   #5
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Up !

I've been reading many posts and Sheldon's article, but couldn't find the answer to my problem...

I have a 2009 fuji track, fixed, stock BB, stock cranks, new pedals (mks GR9).
I've been experiencing a creak in the BB area for a few days now. It occurs on the first or the second time i push forward on the left crank (when it's at 9 o'clock), and the first time i push backward an the left (when it's at 3 o'clock).
I'm quite sure it's not the pedal because the noise was already there before i changed pedals, and i'm absolutely sure it's not the seat/seatpost because i'm standing on the pedals when it occurs.
I have already greased ant tighten the pedals, cranks and BB, but maybe it is not well done because i don't have a torque wrench yet.
Right crank doesn't creak at all, not matter how hard i push on it.

Any ideas ?
thanks in advance.
very possible that its the torque. put it to specs when you get that wrench!
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Old 10-15-09, 11:38 AM   #6
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if its an older aluminum or carbon frame the actual frame could be making noise under flex, but first check pedals and then pull the b.b. to check for any internal play on the bearings. If everything checks out then torque it to correct specs, usually 350 to 400 pounds. If you still have noise it is most like the frame at the point, make sure you check for stress cracks. Any shop should be able to find those on the spot for you.
It's a newer cromo frame
my cranks and BB have absolutely no play. The only movement i see when i stand on the pedal while holding the brake is due to the frame flex.
I'm gonna clean and check the frame for any crack.

thanks for your help
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Old 10-15-09, 11:39 AM   #7
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very possible that its the torque. put it to specs when you get that wrench!
thanks, i will try to accelerate my purchase of the wrench
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Old 10-15-09, 12:17 PM   #8
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One other thing to look at: check the chainring and its bolts. I had an annoying creak at the same point in my pedal stroke that I eventually traced to sweat building up some gunk between the chainring and the crank spider, due in part to the fact that one of the bolts was slightly under-tightened. Once I cleaned the lot and re-tightened to proper torque, all was silent.
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Old 10-15-09, 12:29 PM   #9
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In all sincerity ... and with no disrespect ... the ParkTool link and Sheldon Brown (RIP!) links rather cover it.

In 99.9% of cases, it's a process of methodically and systematically removing, cleaning, and re-torquing (to spec) one thing/set of things (eg, chainring bolts) at a time until it's been isolated.

In the remainder of cases, it's probably a crack IN the frame about 90% of that 1/10th of a % of cases.

But it's /verrrrry/ rare that somebody's creak/squeak/noise isn't resolved through patient trial and error.

BTW: I'm going with bb on yours, too: remove, clean, lube (grease/anti-seize/teflon tape -- your choice), and torque to spec.

Got that torque wrench yet? ;-)
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Old 10-15-09, 12:43 PM   #10
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Got that torque wrench yet? ;-)
I can't decide which one to get
http://www.parktool.com/products/det...t=13&item=TW-6
http://www.filzer.com/products.php?id=120
or
http://www.pro.facom.fr/CatalogueGen...AG-CAT-05.aspx

I've probably been too fast when i removed, cleaned and reinstalled my cranks. I'll do it again as soon as i have the wrench.
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Old 10-16-09, 07:18 AM   #11
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Update :
I took the bike to my LBS, he acknowledge that it was probably something loose, he tigthened everything but it had no effect.
I still hear 1, 2 or 3 clicks depending how hard i push on my left pedal (3 when i skip/skid for example).
Can my BB be shot even if it has no perceptible play ?
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Old 10-19-09, 07:13 AM   #12
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Update :
I took the bike to my LBS, he acknowledge that it was probably something loose, he tigthened everything but it had no effect.
I still hear 1, 2 or 3 clicks depending how hard i push on my left pedal (3 when i skip/skid for example).
Can my BB be shot even if it has no perceptible play ?
When it was tightened down, did he also open her up and clean and out? Oh and what type of B.B. do you have? It would be very rare for it to be your frame at this point, especially since it's sweet chromo.
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Old 10-19-09, 07:51 AM   #13
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No he didn't.
I was going there for buying spokes (as i keep breaking leading spokes but that's another problem...), and as i was talking to the mecanic, i told him that i had this annoying clicking. He said that it was most likely not tight enough so he quickly gave everything a good torque, and said that i should be fine, but it didn't change anything.
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Old 10-19-09, 08:17 AM   #14
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cool, then if its not a sealed cartridge b.b. then cleaning and repacking should really help a lot. if it is sealed then if you pull it out, and try giving it a spin and see if any bearings have gone bad. you will feel a slight resistance when trying to turn the b.b. axle. if everything is buttery smooth and no signs of dirt or contamination, hit us back. if you find evidence of problems though, then a sealed cartridge calls for a replace.
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Old 10-19-09, 01:52 PM   #15
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Sometimes it's impossible to "find" the creak since the hanger tube is out of round and the BB - even when everything is properly torqued - is shifting in the tube. If all else fails, try a healthy wrap of teflon tape around the BB threads. You want enough to keep it from shifting.

If that fails, well --- they shoot horses, don't they?
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