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

RD highest gear wont shift up

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.

RD highest gear wont shift up

Old 02-18-19, 06:13 PM
Senior Member
Thread Starter
Join Date: Feb 2017
Posts: 63
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
RD highest gear wont shift up

the rd on my 7 gear bike hybrid is on the highest gear it doesnt want to shift up to the 2nd highest gear when i try to change the gear up 1 but it will just go halfway before it stops and stays.the cables are relativity clean and chain too.i have made sure to line up the highest gear with the rd and looks perfectly straight aliened so its not bent or anything.
shine2000 is offline  
Old 02-18-19, 06:46 PM
Andrew R Stewart 
Senior Member
Andrew R Stewart's Avatar
Join Date: Feb 2012
Location: Rochester, NY
Posts: 11,740

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1783 Post(s)
Liked 65 Times in 50 Posts
Not the best description to really know what's going on. "it doesn't want to shift up to the 2nd highest gear when i try to change the gear up 1 but it will just go halfway before it stops and stays"

"1" what?

"Half way..." Are you saying it shifts to the half way point of the cog set (#4 cog, the middle one of a 7 cog set) OR are you saying that the chain tries to climb up on the second smallest cog but doesn't make it over and over?

Among the various reasons the second suggestion I ask about can happen is due to wear (the guide pulley flops about, the chain is totally worn out, the cog teeth are so rounded off they don't grab the chain, the der has so much slop in it's various pivots). Or the cable isn't properly adjusted or the amount of open chain between the guide pulley and the cog's underside is so large that the many links just slop over and the chain's plate doesn't engage the next cog's teeth (and one way this happens is if one of the der pivots is seized and won't let the upper pulley to track just below the cog).

But when you find out what's going on do let us know. Andy
Andrew R Stewart is offline  
Old 02-18-19, 06:54 PM
Senior Member
ljsense's Avatar
Join Date: Sep 2009
Location: Madison, Wis.
Posts: 420
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 111 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Try unscrewing the adjuster knob a half turn or so where the cable housing meets the rear derailleur. If that helps, but there's still an issue, do another half turn or so.

If your bike is sort of new, this is almost always needed after a while. Your cable housing settled in, and you need a little more tension in the cable. Just a guess, playing the odds.
ljsense is offline  
Related Topics
Thread Starter
Last Post
boulder bound
Mountain Biking
07-26-10 07:25 PM
Tandem Cycling
06-28-08 09:41 PM
Eagle Kammback
12-30-07 12:46 PM
12-14-07 12:02 PM

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

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.