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 09-07-06, 08:45 AM   #1
thelonious
aka mt. monk
Thread Starter
 
thelonious's Avatar
 
Join Date: Jun 2006
Location: Colorado
Bikes: '03 Lemond Alpe d'Huez, '87 KHS 12-SPD, Specialized Crossroads Boat Anchor
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
chain skip

I am getting chain skipping when taking off from a stop or steep climbing. Entire drive train is 9-speed 105 triple. I plead guilty to not replacing my chain soon enough, but have since replaced both the chain and cassette. (It started skipping before the replacement.) The new chain was shortened per Shimano recommendations for length. The chain rings all look fine, and the skip will occur on any ring.
Could the rear derailleur be the culprit? It seems like there would be no real force on the pulleys, and it appears to be okay, well aligned, no excessive play.... It does not jump gears. I have adjusted the B-tension screw this way and that, but no difference. I even tried putting an identical wheel on temporarily, but it still skips. Any ideas out there? Thanks.
thelonious is offline   Reply With Quote
Old 09-07-06, 01:19 PM   #2
swifty
commuter
 
Join Date: Mar 2005
Location: Netherlands
Bikes:
Posts: 266
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
How do the teeth on your crank look?
swifty is offline   Reply With Quote
Old 09-07-06, 01:26 PM   #3
lymbzero
otherwiseordinary
 
lymbzero's Avatar
 
Join Date: Jan 2006
Location: California
Bikes:
Posts: 697
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
This could be chain skip OR your freehub body might need cleaning/servicing. Dirty freehubs never seem to engage properly.
lymbzero is offline   Reply With Quote
Old 09-07-06, 06:03 PM   #4
ed202d
teenage biker
 
Join Date: Jul 2004
Location: LA, CA
Bikes:
Posts: 10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
this jus seemed to happen to me. had it serviced for $8 . the other lbs said i woudl have had ot replace the chain (evil evil) but yea.. apparently i had problems with one of my chain link?? i'm not sure actually.. he didn't explain it in a language that's too easy for me to understand :-p

but yea.. gl with that.. or jus go get it serviced and see wat hapens.
ed202d is offline   Reply With Quote
Old 09-08-06, 11:02 AM   #5
thelonious
aka mt. monk
Thread Starter
 
thelonious's Avatar
 
Join Date: Jun 2006
Location: Colorado
Bikes: '03 Lemond Alpe d'Huez, '87 KHS 12-SPD, Specialized Crossroads Boat Anchor
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
thanks for the replies. like i said, the chain rings don't look very worn, but i'm no expert... how do you "measure" that? just to be sure, i'm gonna borrow the 105 cranks off of my girlfriend's bike this weekend and see if it makes any difference.
thelonious is offline   Reply With Quote
Old 09-08-06, 04:44 PM   #6
powerjb
sometimes it hurts...
 
Join Date: Aug 2004
Location: Denver, CO
Bikes: 2006 DeBernardi Track, Home-made Tall Bike, Custom 3-Speed Schwinn? Road Bike.
Posts: 187
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
does your chain have a master link? i know shimano chains don't. it could be that when you put in the rivet you didn't have it perfect, and thus the link doesn't move the way it should. i think this is what ed202d was talking about.
powerjb is offline   Reply With Quote
Old 09-08-06, 04:50 PM   #7
cooker
Prefers Cicero
 
cooker's Avatar
 
Join Date: Jul 2005
Location: Toronto
Bikes: 1984 Trek 520; 1990s Peugeot (Canadian-made) rigid mountain bike; 2007 Bike Friday NWT; misc others
Posts: 10,430
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 305 Post(s)
I get only it when I wrongly stop in the worst gear combo. I'll be riding on the middle front ring and small rear cog, and I'll have to downshift due to a stoplight, so I'll shift to the granny gear at the front. The small ring at the rear doesn't have enough teeth to hold the chain when I start up again, so it skips. I have to remember to shift to a larger rear cog in that situation. I'm also probably due for new cogs and chain.
cooker is online now   Reply With Quote
Old 09-08-06, 05:24 PM   #8
thelonious
aka mt. monk
Thread Starter
 
thelonious's Avatar
 
Join Date: Jun 2006
Location: Colorado
Bikes: '03 Lemond Alpe d'Huez, '87 KHS 12-SPD, Specialized Crossroads Boat Anchor
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i've had the frozen link before; the shimano replacement connecting pins will do that too. but i checked several times when i put on the new chain (hg-73) and all is moving freely. the more i think about it, the more i believe it has to be the chain rings. i've already started looking around for some new ones....
thelonious 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 05:00 PM.