Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 03-27-03, 02:53 PM   #1
montlake_mtbkr
www.titusti.com
Thread Starter
 
montlake_mtbkr's Avatar
 
Join Date: Feb 2003
Location: Seattle
Bikes: Titus Switchblade, Trek 4500
Posts: 320
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Time to replace BB?

I'm hearing a clicking noise coming I believe from the BB. I'm almost positive it's not the chain or rings. I clean the chain and rings weekly and if I turn the crank when the bike is suspended there's no clicking.
It's only when my full weight is on the bike and pedaling that I hear a short "click-click-click" every time my right leg pushes down on the right crank/pedal. I don't know what type BB I have, it's stock '01 Trek 4500.

Any ideas? It doesn't seem to affect the bikes performance but it's kind of annoying.
montlake_mtbkr is offline   Reply With Quote
Old 03-27-03, 03:19 PM   #2
Kev
Senior Member
 
Join Date: Nov 2001
Bikes:
Posts: 1,652
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Have you checked to see if the crank bolts are loose, they can create that type of noise.
Kev is offline   Reply With Quote
Old 03-27-03, 03:42 PM   #3
catfish
have bike will tour
 
catfish's Avatar
 
Join Date: Sep 2001
Location: Wisconsin
Bikes: Trek 5200, Trek 520, Trek 2120
Posts: 381
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
also check the bb for tightness and correct torque.
catfish is offline   Reply With Quote
Old 03-27-03, 04:07 PM   #4
montlake_mtbkr
www.titusti.com
Thread Starter
 
montlake_mtbkr's Avatar
 
Join Date: Feb 2003
Location: Seattle
Bikes: Titus Switchblade, Trek 4500
Posts: 320
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
um ok, how do I do that?
montlake_mtbkr is offline   Reply With Quote
Old 03-27-03, 04:13 PM   #5
Kev
Senior Member
 
Join Date: Nov 2001
Bikes:
Posts: 1,652
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Here you go check this out for directions.

http://www.parktool.com/repair_help/...queaking.shtml
Kev is offline   Reply With Quote
Old 03-28-03, 02:22 PM   #6
wanderlust
Junior Member
 
Join Date: Oct 2002
Location: Sarasota, FL
Bikes:
Posts: 7
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Try checking your peadls for any play, the spindle can sometimes come loose and make that annoying clicking sound.

good luck.
wanderlust is offline   Reply With Quote
Old 03-28-03, 09:19 PM   #7
John E
feros ferio
 
John E's Avatar
 
Join Date: Jul 2000
Location: www.ci.encinitas.ca.us
Bikes: 1959 Capo; 1980 Peugeot PKN-10; 1981 Bianchi; 1988 Schwinn KOM-10;
Posts: 17,042
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 62 Post(s)
A long shot, but potentially very dangerous -- if a crank is starting to fail at the pedal eye or the spindle eye, it may start creaking before it actually fractures. A loose crank fixing bolt is a very likely cause of creaking from that area of the bike.
__________________
"Early to bed, early to rise. Work like hell, and advertise." -- George Stahlman
Capo [dschaw'-poe]: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger, S/N 42624
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1981 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
John E is offline   Reply With Quote
Old 03-29-03, 10:58 AM   #8
RainmanP
Mr. Cellophane
 
RainmanP's Avatar
 
Join Date: Nov 2000
Location: New Orleans, LA
Bikes:
Posts: 3,037
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
These are all good ideas. Apparent bb/crank clicking can be caused by a number of things - loose chainring bolts, loose pedals, even your saddle or seatpost. I had a squeaking sound in my crank area that was driving me crazy. I finally figured out that the way I had my cleats adjusted the rubber sole of my shoe was lightly rubbing the crank with every revolution. Chainring bolts are the easiest thing to check. Just take a 5 mm allen key and see if they are tight. Pedals take a 15 mm wrench though some have flats too narrow for a standard wrench. Checking your bb itself requires special tools. You would probably be better off letting your LBS take a look. They will only charge a few bucks to check and overhaul an old cup and cone bb with new bearings. If you need a new cartridge bb (they aren't intended to be serviced) they aren't expensive. Cup and cone bb's should be overhauled about once a year. If it has been longer than that go ahead and have it done at your LBS.

Don't get me wrong. I encourage you to learn to work on your own bike, but I personally consider the bb more of an intermediate procedure, not something to start off with.
__________________
If it ain't broke, mess with it anyway!

Last edited by RainmanP; 03-29-03 at 11:03 AM.
RainmanP is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 12:58 AM.