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 09-07-10, 11:48 AM   #1
pstock
Senior Member
Thread Starter
 
Join Date: May 2008
Location: Toronto, Canada
Bikes: Merckx titanium with Chorus, Columbus Cyclops Campy Victory, 531 Harry Quinn 1st gen DA, SLX Fuso 8-spd DA, Airfriday. Colnago Gilco with Campy mix, Claude Pottie 753 w. 8S Record, Claude Pottie Columbus with 105, Basso with DA 7402, Masi Team 3v wit
Posts: 600
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Troublesome 7-speed STI adjustment (one click off top and bottom)

I know there are hundreds of threads out there on adjusting STI rear derailleurs, but I haven't found exactly my (probably trivial) "problem" and so it might be easier to just ask again.

Please don't laugh at my 7-speed 105 setup. It's on my 12 year old Air Friday (which also has a 3-speed internal Sachs rear hub). but I took it out of it's case for it's annual check up and before I pack it away for another year, I would like to get it shifting correctly.

I know the basics of STI RD adjusting: drop to smallest rear, click up to 2nd smallest rear, barrel adjust til just making noise against the 3rd, roll it back half a turn.

But here's my result (and please excuse my nontechnical terminology).
* Drop it down into the smallest rear.
* One Click up to the 2nd-smallest.
* Barrel adjust to noise point, then back.
* It then shifts smoothly 3,4,5,6... up to the biggest rear (#7).

* BUT then it needs 2 clicks to drop down to the 2nd-largest rear (#6).

* then it clicks smoothly down to the 2nd smallest (#2) but won't drop back into the smallest rear (#1).

So, I seem to be one index point off at both the top and bottom, even though I think I started the adjusting process off correctly.

any suggestions as to what I am doing wrong?

many thanks

Peter
pstock is offline   Reply With Quote
Old 09-07-10, 01:48 PM   #2
Ex Pres
#39
 
Ex Pres's Avatar
 
Join Date: Dec 2007
Location: the 35223 (AL)
Bikes:
Posts: 6,260
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
possibly cable friction interfering with the "release" allowing it to shift to smaller cogs. But first, I'd just release some tension and see how it goes before I mucked around with the cables and housings.
Ex Pres is offline   Reply With Quote
Old 09-07-10, 07:52 PM   #3
pstock
Senior Member
Thread Starter
 
Join Date: May 2008
Location: Toronto, Canada
Bikes: Merckx titanium with Chorus, Columbus Cyclops Campy Victory, 531 Harry Quinn 1st gen DA, SLX Fuso 8-spd DA, Airfriday. Colnago Gilco with Campy mix, Claude Pottie 753 w. 8S Record, Claude Pottie Columbus with 105, Basso with DA 7402, Masi Team 3v wit
Posts: 600
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
that's a good suggestion. it has been a while since I replaced the cables and housing.
pstock 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 12:48 PM.