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

Ghost shifting?

Notices
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.

Ghost shifting?

Old 11-15-23, 06:23 PM
  #26  
old newbie
Thread Starter
 
Join Date: Nov 2009
Location: Fort Worth, Texas
Posts: 702

Bikes: Specialized Roubaix

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 432 Post(s)
Liked 251 Times in 137 Posts
I need to check more closely in the morning to make sure if it is the bb. I just remembered part of my route was on chip seal. I need to make sure a piece isnít in there somewhere.
pepperbelly is offline  
Old 11-15-23, 07:08 PM
  #27  
old newbie
Thread Starter
 
Join Date: Nov 2009
Location: Fort Worth, Texas
Posts: 702

Bikes: Specialized Roubaix

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 432 Post(s)
Liked 251 Times in 137 Posts
If this means anything sometimes when I shift the gear doesnít change. If I shift again it may jump 2 gears and I have to shift back.
pepperbelly is offline  
Old 11-15-23, 10:56 PM
  #28  
Just Pedaling
 
SpedFast's Avatar
 
Join Date: Oct 2021
Location: US West Coast
Posts: 917

Bikes: YEP!

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 301 Post(s)
Liked 461 Times in 307 Posts
Originally Posted by pepperbelly
If this means anything sometimes when I shift the gear doesnít change. If I shift again it may jump 2 gears and I have to shift back.
It's really starting to sound like cable wear, dirt, or fraying. Something is holding up the cable inside the cable housing or shifter. Cables and housings are cheap and easy to replace. Replacing them is good experience and leaves you with a sense of accomplishment. Good luck, Smokey
SpedFast is offline  
Likes For SpedFast:
Old 11-15-23, 11:09 PM
  #29  
old newbie
Thread Starter
 
Join Date: Nov 2009
Location: Fort Worth, Texas
Posts: 702

Bikes: Specialized Roubaix

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 432 Post(s)
Liked 251 Times in 137 Posts
Originally Posted by SpedFast
It's really starting to sound like cable wear, dirt, or fraying. Something is holding up the cable inside the cable housing or shifter. Cables and housings are cheap and easy to replace. Replacing them is good experience and leaves you with a sense of accomplishment. Good luck, Smokey
I donít think that would explain the grinding I felt at the end.
It may all be related. I will have to figure it out.
pepperbelly is offline  
Old 11-16-23, 12:45 AM
  #30  
Senior Member
 
Join Date: Apr 2019
Location: UK
Posts: 1,166
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 558 Post(s)
Liked 357 Times in 275 Posts
Originally Posted by pepperbelly
I am not sure which bottom bracket/bearing mine has. I came across an abec 3 set that screws together rather than having a press fit. I think it was for a PF 30. My Roubaix has a carbon frame. Apparently that makes finding which bb it takes complicated.
My mateís (couple of years earlier rhan yours) has external threaded bearings. You can clearly see them. According to a spec sheet I just saw the 2013 used a Shimano pressfit BB. It also (on the Elite) was mostly 105 but you said yours is Ultegra? I donít think that would affect which BB they used though.
choddo is offline  
Old 11-16-23, 08:05 AM
  #31  
old newbie
Thread Starter
 
Join Date: Nov 2009
Location: Fort Worth, Texas
Posts: 702

Bikes: Specialized Roubaix

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 432 Post(s)
Liked 251 Times in 137 Posts
What I am feeling isnít exactly grinding. It almost feels like when steering head bearings take a lot of hard hits and dent the races. This almost feel like indexed steering feels like.
pepperbelly is offline  
Old 11-16-23, 10:33 AM
  #32  
Senior Member
 
soyabean's Avatar
 
Join Date: Feb 2022
Location: GMT-5
Posts: 794
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 457 Post(s)
Liked 367 Times in 243 Posts
I've seen Tourneys work flawlessly on BSOs, but make a terrible replacement part for a vintage bike.

A cheap RD can do stuff like that, ghost shifting, etc.

Vintage bikes likes things that are more solid, like all metal Deore, 105, etc.
Attached Images
File Type: jpg
ultrasonic-IMG_7810.jpg (80.2 KB, 50 views)
soyabean is offline  
Old 11-16-23, 10:38 AM
  #33  
old newbie
Thread Starter
 
Join Date: Nov 2009
Location: Fort Worth, Texas
Posts: 702

Bikes: Specialized Roubaix

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 432 Post(s)
Liked 251 Times in 137 Posts
I just found that one of my jockey wheels needs to be replaced. That may or may not have been causing the shifting problem.
pepperbelly is offline  
Old 11-16-23, 11:26 AM
  #34  
Just Pedaling
 
SpedFast's Avatar
 
Join Date: Oct 2021
Location: US West Coast
Posts: 917

Bikes: YEP!

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 301 Post(s)
Liked 461 Times in 307 Posts
Originally Posted by pepperbelly
I just found that one of my jockey wheels needs to be replaced. That may or may not have been causing the shifting problem.
One of your jockey wheels will have more play in it than the other. This allows the chain to float slightly side to side when shifting for smoother shifts. Don't mistake that for a worn out jockey wheel.
SpedFast is offline  
Old 11-16-23, 11:40 AM
  #35  
old newbie
Thread Starter
 
Join Date: Nov 2009
Location: Fort Worth, Texas
Posts: 702

Bikes: Specialized Roubaix

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 432 Post(s)
Liked 251 Times in 137 Posts
Originally Posted by SpedFast
One of your jockey wheels will have more play in it than the other. This allows the chain to float slightly side to side when shifting for smoother shifts. Don't mistake that for a worn out jockey wheel.
The wheel is leaning to one side and has part of the seal coming out. The chain slips off and to the side.
pepperbelly is offline  
Likes For pepperbelly:
Old 11-16-23, 12:27 PM
  #36  
Junior Member
 
frdfandc's Avatar
 
Join Date: Mar 2008
Location: Cecil County, Maryland
Posts: 154

Bikes: 2013 Jamis Dragon Race

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 58 Post(s)
Liked 37 Times in 30 Posts
Originally Posted by pepperbelly
The wheel is leaning to one side and has part of the seal coming out. The chain slips off and to the side.

In the years I sold, service, and rode Specialized, I can count on one hand the number of times a press fit BB in a Specialized needed to be replaced due to noise, creaks, clicks when pedaling.

Fix the jockey pully first, if that doesn't solve the problem, then you're going to have to dig deeper.
frdfandc is offline  
Old 11-16-23, 12:32 PM
  #37  
old newbie
Thread Starter
 
Join Date: Nov 2009
Location: Fort Worth, Texas
Posts: 702

Bikes: Specialized Roubaix

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 432 Post(s)
Liked 251 Times in 137 Posts
Originally Posted by frdfandc
In the years I sold, service, and rode Specialized, I can count on one hand the number of times a press fit BB in a Specialized needed to be replaced due to noise, creaks, clicks when pedaling.

Fix the jockey pully first, if that doesn't solve the problem, then you're going to have to dig deeper.
I think the BB is fine. The problem was the jockey wheel.
pepperbelly is offline  
Likes For pepperbelly:
Old 11-21-23, 04:43 PM
  #38  
Senior Member
 
Join Date: Aug 2009
Posts: 1,614
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 437 Post(s)
Liked 496 Times in 293 Posts
Originally Posted by frdfandc
my last road bike was a 13 roubaix expert. I know the ins and outs of the roubaix.
lol.
wheelreason is offline  
Old 11-21-23, 05:18 PM
  #39  
old newbie
Thread Starter
 
Join Date: Nov 2009
Location: Fort Worth, Texas
Posts: 702

Bikes: Specialized Roubaix

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 432 Post(s)
Liked 251 Times in 137 Posts
The jockey wheel was damaged badly but the whole derailleur was damaged. I had it replaced with a 105. Ultegra components are not available.
pepperbelly is offline  
Old 11-22-23, 05:35 PM
  #40  
Junior Member
 
frdfandc's Avatar
 
Join Date: Mar 2008
Location: Cecil County, Maryland
Posts: 154

Bikes: 2013 Jamis Dragon Race

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 58 Post(s)
Liked 37 Times in 30 Posts
Originally Posted by pepperbelly
The jockey wheel was damaged badly but the whole derailleur was damaged. I had it replaced with a 105. Ultegra components are not available.

So what's the outcome? Problem solved? Or just the beginning?
frdfandc is offline  
Old 11-22-23, 08:02 PM
  #41  
old newbie
Thread Starter
 
Join Date: Nov 2009
Location: Fort Worth, Texas
Posts: 702

Bikes: Specialized Roubaix

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 432 Post(s)
Liked 251 Times in 137 Posts
Originally Posted by frdfandc
So what's the outcome? Problem solved? Or just the beginning?
It shifts properly now and stays in the selected gear.
pepperbelly is offline  
Likes For pepperbelly:

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.