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 01-04-05, 10:23 AM   #1
d2create
Senior Member
Thread Starter
 
d2create's Avatar
 
Join Date: Apr 2003
Location: Houston we have a problem
Bikes:
Posts: 2,914
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Adjusting shifter tension?

I have some Shimano Deore shifters (similiar to rapid fire) on my Fisher and the one that controls the rear derailur needs some adjusting. The small trigger in front that you pull with your index finger needs to be tighter or something. When i pull it back it goes to its absolute limit before any tension is felt and the shift is made. It's just barely able to shift. Is there a way to tighten that up?
Sorry for the poor terminology/description.

Thanks!
d2create is offline   Reply With Quote
Old 01-04-05, 10:59 AM   #2
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Rans Rockst (Retro rocket) Rans Enduro Sport (Retro racket) Catrike 559, Merin Bear Valley (beater bike).
Posts: 26,738
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 140 Post(s)
See if you can flush the cobwebs out of it's innerds with a shot of WD40 and a blast of compressed air.
Retro Grouch is offline   Reply With Quote
Old 01-04-05, 11:09 AM   #3
IchbinJay
Senior Member
 
IchbinJay's Avatar
 
Join Date: Oct 2004
Location: Massachusetts
Bikes: Jamis Ventura Comp (2010) and Raleigh M80 (1998).
Posts: 446
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If there are adjusting barrels at the beginning of the casing you might want to push them out so that you can get more tension, or, if the problem is the limit on the derailleur push out the high screw until you can see the derailleur move towards you.
IchbinJay is offline   Reply With Quote
Old 01-04-05, 11:13 AM   #4
sydney
Senior Member
 
sydney's Avatar
 
Join Date: Jan 2004
Bikes:
Posts: 9,428
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by d2create
I have some Shimano Deore shifters (similiar to rapid fire) on my Fisher and the one that controls the rear derailur needs some adjusting. The small trigger in front that you pull with your index finger needs to be tighter or something. When i pull it back it goes to its absolute limit before any tension is felt and the shift is made. It's just barely able to shift. Is there a way to tighten that up?
Sorry for the poor terminology/description.

Thanks!
There is a cable tension adjuster at the back of the RD. Suggest you check the repair section at www.parktool.com for the complete drill on derailer adjustment. I think tho that if shifting with the larger lever is ok,the problem may be elsewhere, or the shifter may be hosed.
sydney is offline   Reply With Quote
Old 01-04-05, 11:14 AM   #5
sydney
Senior Member
 
sydney's Avatar
 
Join Date: Jan 2004
Bikes:
Posts: 9,428
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by IchbinJay
...., if the problem is the limit on the derailleur push out the high screw until you can see the derailleur move towards you.
What??
sydney is offline   Reply With Quote
Old 01-04-05, 11:19 AM   #6
d2create
Senior Member
Thread Starter
 
d2create's Avatar
 
Join Date: Apr 2003
Location: Houston we have a problem
Bikes:
Posts: 2,914
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by sydney
There is a cable tension adjuster at the back of the Rd. Suggest you check the repair section at www.parktool.com for the complete drill on derailer adjustment. I think tho that if shifting with the larger lever is ok,the problem may be elsewhere, or the shifter may be hosed.
Thanks, I'll check it out. I looked at parktools but didn't think it was a derailer issue. And the bike is brand new so i doubt the shifter is hosed. I was doing something the other day (can't remember what) and noticed the difference afterwards. Think it might have been when i was moving the shifters and brake handles closer to the stem? But not sure.
d2create is offline   Reply With Quote
Old 01-04-05, 08:51 PM   #7
d2create
Senior Member
Thread Starter
 
d2create's Avatar
 
Join Date: Apr 2003
Location: Houston we have a problem
Bikes:
Posts: 2,914
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Ok, i turned that cable tension adjuster on the rear derailler and it didn't seem to fix my problem.
Maybe if i try to explain it better....
Basically lets say that the shift lever travels 0-100%. And from 0-75% there is absolutely no tension felt other than the spring that keeps it going back to the 0% position. Then from 75%-100% there is a tension. And the shift is made right at 98-100%.
With my other shifter i feel tension start much earlier and the shift happens much earlier. Probably about a 20% difference.

Or maybe i didn't adjust the cable tension enough? Figured I'd check back here again before going to far. Otherwise I will just have my lbs check it out at the first 30 day service (but its more fun fixing it myself).
d2create is offline   Reply With Quote
Old 01-04-05, 09:31 PM   #8
sydney
Senior Member
 
sydney's Avatar
 
Join Date: Jan 2004
Bikes:
Posts: 9,428
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by d2create
Ok, i turned that cable tension adjuster on the rear derailler and it didn't seem to fix my problem.
Maybe if i try to explain it better....
Basically lets say that the shift lever travels 0-100%. And from 0-75% there is absolutely no tension felt other than the spring that keeps it going back to the 0% position. Then from 75%-100% there is a tension. And the shift is made right at 98-100%.
With my other shifter i feel tension start much earlier and the shift happens much earlier. Probably about a 20% difference.

Or maybe i didn't adjust the cable tension enough? Figured I'd check back here again before going to far. Otherwise I will just have my lbs check it out at the first 30 day service (but its more fun fixing it myself).
The small trigger on the shifter does nothing but release a ratchet inside the shifter.There is no adjustment.
sydney is offline   Reply With Quote
Old 01-04-05, 11:05 PM   #9
Dirtbike
Giggity giggity!
 
Dirtbike's Avatar
 
Join Date: Nov 2004
Location: Danville, Ca
Bikes: Yeti DJ Custom build. X.9, Marzocchi, RaceFace, Gamut, DT, Truvativ, Michelin, Hope.
Posts: 1,800
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
sounds like something is worn. how old are the shifters? i have doere shifters and i can just tap them and they shift down.
Dirtbike is offline   Reply With Quote
Old 01-05-05, 10:59 AM   #10
grok85
Junior Member
 
Join Date: Aug 2004
Bikes:
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Sydney is correct.
The small trigger simply releases a catch on the mechanism that wraps (pulls) the cable up. There is no adjustment. (The thumb shifter fans will love this). However, the entire shifter may be able to be rotated forward on the plate it is mounted on. If you do not see an allen-bolt at the top of the shifter this adjustment may not be possible. And remember rotating the shifter will not change how much travel you have in the trigger util it engauges the catch mechanism.

I know the shifter is on a newer bike and that the other (left/front) shifter has a different amount of travel, but new doesn't mean pooh because it could easily be defective and comparing it to a front shifter is apples and oranges.

I would compare it to a new shifter on the same make and model of bicycle that is on the sales floor where you made your purchase. If it is as new as you say, you will be under warranty and the lbs should replace it if it proves to be a defective shifter. Careful! if you find out that the other shifter has the same amount of travel, you may find out that you just do not care for the shifters that were specified for you bike.

P.S. remember to go out and just ride the silly thing!

Grok85
grok85 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 07:54 AM.