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creaky cranks

Old 05-11-08, 07:04 AM
  #1  
empellavega
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creaky cranks

i have been riding fixed for quite a while and have just noticed that my cranks creak a bit when i really lay the hammer down. mashing from starts, sprinting, etc. anyone else get this noise? it goes away when i am just pedaling along. my guess is that its pretty normal. thoughts?
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Old 05-11-08, 07:06 AM
  #2  
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might be loose cranks, tighten that **** up


or you bb might be nearing its death


i need to do the same, thanks for the reminder


Edit: early morning spelling **** ups
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Old 05-11-08, 08:55 AM
  #3  
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not normal
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Old 05-11-08, 08:59 AM
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tighten your chainring bolts. if that doesnt solve it, check the BB
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Old 05-11-08, 09:02 AM
  #5  
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Also check your seatpost. For me, it was my seatpost creaking whenever I'd press down on it hard and I thought it was coming from the cranks. I have a Thomson seatpost and they're actually known to click. So, try just pressing down hard on your saddle, see if that makes a noise...

IF not, then I would suggest re-greasing all the chainring bolts and maybe make sure your BB is tight/regreased...
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Old 05-11-08, 09:09 AM
  #6  
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Check you're using the right type of BB. A JIS crank with an ISO bb will appear to be tight, but wiggles just a tiny bit, causing the crank to creak under load.

Also check your chainring bolts - but the noise they make is more like a bird chirping as they shift slightly one by one.

Probably not your seatpost if the noise occurs when your putting the hammer down, as you're probably standing on the pedals, right?
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Old 05-11-08, 10:37 AM
  #7  
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Creaky Cranks reminds me of Sneaky Snakes...

Anywho, remount the cranks, making sure everything is clean. CLEAN.

Also it could be your shoe/pedal. I have these platforms (that are falling apart) and they WHINE as I pedal. Also my cheapy shimano shoes squeak and creak once in a while. I think its the shoe, since it happens on most spd pedals.
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Old 05-11-08, 12:00 PM
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yeah i just noticed a squeek in my BB recently... it goes away for a bit while riding.. then it comes back. i was going to post a thread about it but i so this post .

is it time to buy a new BB or..?
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Old 05-11-08, 12:52 PM
  #9  
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Originally Posted by Pennywize View Post

is it time to buy a new BB or..?
Just take your chain off the crank and give it a spin. If it feels grindy, time for a new bb. If it feels good, your problem is probably something else.
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Old 05-11-08, 03:34 PM
  #10  
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+1 for reinstalling ur BB...i had the same problem and cleaned it up and now my drivetrain is silent
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Old 05-11-08, 03:45 PM
  #11  
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check your chain tension. too tight = binding = creaky.
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Old 05-11-08, 03:58 PM
  #12  
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Originally Posted by Pennywize View Post
yeah i just noticed a squeek in my BB recently... it goes away for a bit while riding.. then it comes back. i was going to post a thread about it but i so this post .

is it time to buy a new BB or..?
i had this happen one night, and then i realized it was the sole of my shoe rubbing on the crank arm.
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Old 05-12-08, 09:40 AM
  #13  
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not sure if anyone said this yet, but i think is important: grease your spindle arms before you mount the cranks. a little bit goes a long way.
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Old 05-12-08, 04:12 PM
  #14  
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next step??

tightened the cranks. bb has a bit of front to back, up and down play in the bracket. will repacking take that out or is the bb shot???
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Old 05-12-08, 09:26 PM
  #15  
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Originally Posted by jlin View Post
not sure if anyone said this yet, but i think is important: grease your spindle arms before you mount the cranks. a little bit goes a long way.
Many will say this is a very bad idea--that the spindle is the only part of the bike you should never grease or oil. The reduced friction will allow you to tighten the crank bolt more onto the wedge of the spindle causing the crank to spilt. I've only heard stories of this actually happening.
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Old 05-12-08, 09:29 PM
  #16  
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Originally Posted by empellavega View Post
...will repacking take that out or is the bb shot???
Open up the BB and find out.
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Old 05-12-08, 09:33 PM
  #17  
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Last time mine creaked it was due to a crack in the crank.
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Old 05-12-08, 09:37 PM
  #18  
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i once thought my cranks were creaking. so i went over my whole unit and it still creaked - turns out it was the spindles to my pedals - nothing a little triflow didnt take care of.

Originally Posted by jjvw View Post
Many will say this is a very bad idea--that the spindle is the only part of the bike you should never grease or oil. The reduced friction will allow you to tighten the crank bolt more onto the wedge of the spindle causing the crank to spilt. I've only heard stories of this actually happening.
and +1
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Old 05-12-08, 09:38 PM
  #19  
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I second checking the seatpost.

I thought my cranks were creaking and it turned out to be my Thomson.
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Old 05-13-08, 07:05 AM
  #20  
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Originally Posted by empellavega View Post
tightened the cranks. bb has a bit of front to back, up and down play in the bracket. will repacking take that out or is the bb shot???
Adjusting the cup will fix that.
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