Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Creaking Sound from BB

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Creaking Sound from BB

Old 03-25-14, 09:24 AM
  #1  
Squeaky Bottom Bracket
Thread Starter
 
uluchay's Avatar
 
Join Date: Jul 2013
Location: Lake Como, Italy
Posts: 164

Bikes: 2009 Trek 1.2 // 70's Olmo Gentleman

Likes: 0
Liked 0 Times in 0 Posts
Creaking Sound from BB

Hi,

Before anyone suggests that I search other threads about this problem, I would like to declare that I have been reading this and other cycling related forums for about two months and was unable to find a solution to my problem. I have a creaking sound at each half-revolution that is, every time the pedals turn 180 degrees.

With the limited number of tools at hand, I have been able to check and eliminate the following suspects for multiple times:

- Chainring Bolts
- Crank arm Bolts
- Front derraileaur cables
- Bent Chainring
- Pedals and everything related to them
- Both Quick Releases
- Saddle and seat tube
- Handlebar stem

The only remaining item on the list is the BB. That is probably a square taper Shimano UN54 68mm 118mm spindle bottom bracket carrying an FSA Vero Triple crank.

I hear the click around 5-6 o'clock position when high torque is applied. Let's say, when I make the non drive side click, I can not replicate it unless I make the drive side click and vice versa. I think the bottom bracket sealing bolts are loose or the spindle shifts between two positions.

The questions I have:

- Will tightening the bb sealing bolts resolve the problem and for how long?
- Do I really have to change the BB?
- If I buy the BB myself and ask the LBS to change it, will the guy give me the evil look and overcharge for not ordering the BB via them?
- If I continue to ignore the sound, should I be afraid of an irreversible frame damage?
uluchay is offline  
Old 03-25-14, 09:32 AM
  #2  
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,598

Bikes: 8

Liked 1,360 Times in 866 Posts
Bring it by and I'll take a look-see .. online I'm Guessing ..

crank arm to BB fit is damaged and loose as the arm was stretched ridden loose too long ..




next guesser ..

and PS, I know even less about the culture of the Italian Bicycle business at retail ..

Last edited by fietsbob; 03-25-14 at 09:37 AM.
fietsbob is offline  
Old 03-25-14, 09:39 AM
  #3  
Squeaky Bottom Bracket
Thread Starter
 
uluchay's Avatar
 
Join Date: Jul 2013
Location: Lake Como, Italy
Posts: 164

Bikes: 2009 Trek 1.2 // 70's Olmo Gentleman

Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by fietsbob
Bring it by and I'll take a look-see .. online I'm Guessing ..

crank arm to BB fit is damaged and loose as the arm was stretched ridden loose too long ..
Thanks for the offer but Oregon is a bit far from where I live :/

For the diagnose, I don't think that's the case since the FSA Vero is a two piece set and I hear the click on both sides. I hear the same click on both sides. Of course there is a very slim chance of both crank arms being damaged in the same fashion at the same time...
uluchay is offline  
Old 03-25-14, 09:41 AM
  #4  
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Posts: 30,225

Bikes: Catrike 559 I own some others but they don't get ridden very much.

Liked 644 Times in 365 Posts
Originally Posted by fietsbob
next guesser ....
That'd be me.

If you brought that bike to me, I'd remove the crankset and bottom bracket and use a torque wrench when I reassembled everything. If you happen to have an Italian threaded bottom bracket with all right hand threads, my confidence level that my guess is right would double.
__________________
My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.
Retro Grouch is offline  
Old 03-25-14, 09:59 AM
  #5  
Zip tie Karen
 
Phil_gretz's Avatar
 
Join Date: Aug 2009
Location: Fair Oaks Ranch, TX
Posts: 7,004

Bikes: '13 Motobecane Fantom29 HT, '16 Motobecane Turino Pro Disc, '18 Velobuild VB-R-022, '21 Tsunami SNM-100

Liked 1,543 Times in 807 Posts
I'd remove the cranks and pull the BB cartridge. Inspect the cartridge, clean the BB shell threads and grease lightly, wrap the cartridge drive and non drive threads with a bit of teflon plumber's tape, and re-install to the torque spec. Then put the cranks back on and test.
Phil_gretz is offline  
Old 03-25-14, 10:27 AM
  #6  
Mechanic/Tourist
 
Join Date: Apr 2007
Location: Syracuse, NY
Posts: 7,522

Bikes: 2008 Novara Randonee - love it. Previous bikes:Motobecane Mirage, 1972 Moto Grand Jubilee (my fave), Jackson Rake 16, 1983 C'dale ST500.

Liked 11 Times in 11 Posts
I'll agree that it's highly unlikely to be anything but the BB at this time. But just to make sure, and to help others seeing this thread, there are some important steps that are often overlooked. BB/crank noises are most often linked to insufficient torque, but not always. Even when well-torqued some of the parts still can experience movement, especially if the mating surfaces are compromised. Rust scale and other contaminants between crank arm and spindle, pedal and crank arm, and chainring bolts and chainrings can cause clicking or creaking. When working on those interfaces it is important to clean the two mating surfaces. I generally use a rag and solvent followed by fine steel wool. The surfaces would be the spindle flats, the tapered opening on the crank, the face of the crank where the pedal bottoms out and the corresponding flat area on the pedal, and the areas where the chainring bolts seat.
cny-bikeman is offline  
Old 03-25-14, 11:17 AM
  #7  
Squeaky Bottom Bracket
Thread Starter
 
uluchay's Avatar
 
Join Date: Jul 2013
Location: Lake Como, Italy
Posts: 164

Bikes: 2009 Trek 1.2 // 70's Olmo Gentleman

Likes: 0
Liked 0 Times in 0 Posts
Thanks for all the replies, If I were not completely broke and between jobs at the moment I would definitely buy all the tools and play with the thing until my forehead turns black covered with grease.

I found a good LBS who would do the entire replacement for € 23 (around 30 $), nothing that I can't afford. But paying all that money to see the creak reappearing would definitely drive me crazy.
uluchay is offline  
Old 03-25-14, 11:47 AM
  #8  
Senior Member
 
Join Date: Dec 2010
Location: Above ground, Walnut Creek, Ca
Posts: 6,681

Bikes: 8 ss bikes, 1 5-speed touring bike

Likes: 0
Liked 4 Times in 4 Posts
according to your post there is nothing left to create the noise except the BB. so i'd replace it.
hueyhoolihan is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
whatisit
Singlespeed & Fixed Gear
18
07-12-17 03:17 PM
corwin1968
Bicycle Mechanics
5
04-29-15 02:30 PM
jsdavis
Bicycle Mechanics
4
04-06-14 01:13 PM
lbear
Bicycle Mechanics
9
07-03-11 04:07 PM
pwdeegan
Bicycle Mechanics
3
08-06-10 12:31 AM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Your Privacy Choices -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.