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

Shimano 105 STI Shifter "Click Adjustment"???

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.

Shimano 105 STI Shifter "Click Adjustment"???

Old 01-20-10, 08:52 PM
Thread Starter
Join Date: Jan 2010
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Shimano 105 STI Shifter "Click Adjustment"???

My front shifter is increasing the number of "allowable" clicks. When I first picked up the bike, there were two clicks, plus trim on both sides. Now there are either 3 or 4 clicks. As I move from the large chain ring to the small, it takes 2 clicks to move the chain, each click moves the chain slightly (this is not the trim movement I used to have before) Then once in the small sprocket, there is one more click that can happen but it doesn't actually move the derailleur. When I move back up, it usually takes 3-4 clicks to move the chain.

Bike is less than 1 year old, any thoughts on what I need to adjust? Perhaps the cable has just stretched? The upper and lower limits are adjusted well, the cable has no trouble moving in the housing.
bpctcook is offline  
Old 01-20-10, 09:11 PM
Senior Member
joejack951's Avatar
Join Date: May 2004
Location: Wilmington, DE
Posts: 12,083

Bikes: 2016 Hong Fu FM-079-F, 1984 Trek 660, 2005 Iron Horse Warrior Expert, 2009 Pedal Force CX1, 2016 Islabikes Beinn 20 (son's)

Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 1231 Post(s)
Liked 85 Times in 59 Posts
My guess is that your shifter is a double/triple shifter and now that it and the rest of the shifting system has broken in a bit, your cable has loosened to the point where the original throw from the shifter no longer reaches the big ring. You are still getting into the big ring by using the clicks normally reserved for a triple crank. If everything worked fine originally, I'd suggest shifting into your smallest chainring by clicking the shifter until it won't click any more. Now see how taut the derailler cable is. If it feels quite tight, something else is going on. If it's loose, use the barrel adjuster (assuming you have one) to tension the cable until one full throw of the left shifter moves the chain from the little ring to the big ring. Verify that you have clearance when using the big chainring/little cog combo. If not, check that the derailler can be moved out further (if not, you need to adjust your high limit screw) then add more tension until you have clearance. Verify that you have not added too much tension by trying the little/big combo. Too much tension can result in the front derailler not moving inward enough to contact the low limit screw.
joejack951 is offline  
Related Topics
Thread Starter
Last Post
Bicycle Mechanics
08-06-19 02:34 PM
Bicycle Mechanics
04-01-18 08:52 AM
Bicycle Mechanics
04-15-14 03:28 PM
Tandem Tom
Bicycle Mechanics
01-14-13 12:35 PM
Bicycle Mechanics
06-23-10 11:54 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

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.