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.

Gear shifting problem?

Old 07-09-13, 03:51 AM
  #1  
Savvy
Newbie
Thread Starter
 
Join Date: Jul 2013
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Gear shifting problem?

I just got this bike a few weeks ago, its 3 front gears and 7 rear gears. I didn't notice the issue until I compared the gear number on the shifter to where the chain actually is after hearing an odd clicking sound.

After some experimenting with the chain I found that starting from gear 7 shifting down to gear 6 doesn't change the gear and you hear this annoying click after trying to. Now the shifter indicates gear 6 even though its still on gear 7, I shift down again and the chain goes to onto gear 5 while the shifter is indicating gear 6. I shift down again, and the same clicking sound happens and the chain doesn't move so the shifter is indicating gear 5. I try to shift down again and again the clicking persists and the chain doesn't move, so the indicator is on gear 4 now while the chain is still on gear 5. I shift down once more and the chain jumps to gear 3 while the indicator is on gear 4.


I have absolutely no idea whats going on, and this is all the more frustrating because its a new bike I spent 500 bucks on.
Savvy is offline  
Old 07-09-13, 05:07 AM
  #2  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 6,231

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 652 Post(s)
Likes: 0
Liked 46 Times in 42 Posts
It is likely a matter of a simple adjustment of the cable length; most bikes have one or more "barrel adjusters" to handle this function. If you bought the bike new from a dealer you should take it back to them for an adjustment as a normal part of the service you should receive from them.
dsbrantjr is offline  
Old 07-09-13, 05:23 AM
  #3  
Notgrownup
Senior Member
 
Notgrownup's Avatar
 
Join Date: Jun 2013
Location: Snow Hill NC
Posts: 872

Bikes: Trek Madone 2.1

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Needs tweaking on the derailleur....My wife's Wal MArt Schwinn Admiral did the same thing... adjusted a bit and lubricated good and VOILA
Notgrownup is offline  
Old 07-09-13, 05:39 AM
  #4  
cny-bikeman 
Mechanic/Tourist
 
Join Date: Apr 2007
Location: Syracuse, NY
Posts: 7,510

Bikes: 2008 Novara Randonee - love it. Previous bikes:Motobecane Mirage, 1972 Moto Grand Jubilee (my fave), Jackson Rake 16, 1983 C'dale ST500.

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 477 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
"Simple adjustment" and "tweaking" will not do it, because those terms do not tell you anything. But we need more info. Did you get a new or used bike a couple weeks ago, did it have the problem from the beginning, what is the brand of bike and derailleur, and what happens when you shift in the opposite direction?

If you bought the bike new the best solution is to take it back to the store to have an adjustment made (free). If purchased used then you need to educate yourself on how to lubricate the cable and check for friction problems, and then how to fully adjust a rear derailleur. Google install shift cable and adjust rear derailleur - sheldonbrown.com and parktool/blog are the best sites but check videos for illustration of the procedures. Also a good idea to Google bike parts diagram so that you understand the terms being used and can use them when posting here. Finally, it helps to know where you live - may be a bike co-op or other resource nearby.
__________________
There's no such thing as a routine repair.

Don't tell me what "should" be - either it is, it isn't, or do something about it.

If you think I'm being blunt take it as a compliment - if I thought you were too weak to handle the truth or a strong opinion I would not bother.

Please respect others by taking the time to post clearly so we can answer quickly. All lowercase and multiple typos makes for a hard read. Thanks!

Last edited by cny-bikeman; 07-09-13 at 06:28 AM.
cny-bikeman is offline  
Old 07-09-13, 05:50 AM
  #5  
PiLigand
Climbing: Ropes or Wheels
 
PiLigand's Avatar
 
Join Date: Jul 2013
Location: Unied States, Maine
Posts: 385

Bikes: 2012 Scott Foil 30, Homebrew Windsor Fens Build, 2015 Fuji Touring, 1980 Univega

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
More of the same here, But hopefully in simpler language.

If you just bought it from a bike store, you're probably entitled to have it adjusted by their team. If you just got it from a department store (though not likely for $500) you're probably not going to get too much help from them. So the easiest thing to do is probably take it to where you bought it and have them fix it if possible.

Luckily, if this is what we're all assuming it is - just an out-of-tune cable tension on the rear derailleur - it's a pretty simple fix that doesn't require any extra money or parts, just adjustment. In fact, working at a bike shop, this is a great thing to get business for because it costs us nothing but a little bit of time. You can easily find videos online to demonstrate how to tune up the shifting by googling something like "How to tune bicycle shifters."
This one looks pretty good to me, if it could help you out: http://www.youtube.com/watch?v=ZTprZHCwoNc
PiLigand is offline  
Old 07-09-13, 06:17 AM
  #6  
cny-bikeman 
Mechanic/Tourist
 
Join Date: Apr 2007
Location: Syracuse, NY
Posts: 7,510

Bikes: 2008 Novara Randonee - love it. Previous bikes:Motobecane Mirage, 1972 Moto Grand Jubilee (my fave), Jackson Rake 16, 1983 C'dale ST500.

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 477 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Simpler language? Searching for tuning shifters is likely to get you poor quality advice, as non-mechanics tend to use improper terms. Shifters is also more often used these days for the shift levers rather than the derailleurs. Do that search in Bing and you won't even see Sheldon's site or Park Tool on the first page. As for the linked video there are several errors.
  • The cable (not "wire") does not stretch - rather the housings seat into position in the stops.
  • I would never recommend stressing with one's bare fingertips- not enough stress on the cable system, too much on the fingers. Use a rag over your fingers and do it under the down tube, or use the shift lever.
  • The cable should not pulled tight until after the high limit is initially set, and the barrel adjuster should have 1/2 to 1 turn left in it rather than bottomed out.
  • Checking the shift to the small/large cog should be done by shifting down to it both from several cogs away and by shifting only from the next cog, and should be double-checked with the cable engaged, using the lever, in the same manner.
  • The video did not mention cable friction/lubrication at all, and that is critical to proper operation of the derailleurs.
Also, "we" are not all assuming it's just poor cable tension - that would not necessarily explain a two cog jump.
__________________
There's no such thing as a routine repair.

Don't tell me what "should" be - either it is, it isn't, or do something about it.

If you think I'm being blunt take it as a compliment - if I thought you were too weak to handle the truth or a strong opinion I would not bother.

Please respect others by taking the time to post clearly so we can answer quickly. All lowercase and multiple typos makes for a hard read. Thanks!

Last edited by cny-bikeman; 07-09-13 at 07:04 AM.
cny-bikeman is offline  
Old 07-09-13, 04:08 PM
  #7  
Notgrownup
Senior Member
 
Notgrownup's Avatar
 
Join Date: Jun 2013
Location: Snow Hill NC
Posts: 872

Bikes: Trek Madone 2.1

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
[TABLE="class: vk_txt ts"]
[TR]
[TD]Wire

Noun

[TABLE="class: ts"]
[TR]
[TD]Metal drawn out into the form of a thin flexible thread or rod.

Just sayin...No offense...LOL.

Y'all make it sound so freaggin complicated...it ain't that hard...
[/TD]
[/TR]
[/TABLE]
[/TD]
[/TR]
[TR]
[TD][/TD]
[/TR]
[/TABLE]
Notgrownup is offline  
Old 07-09-13, 04:50 PM
  #8  
cny-bikeman 
Mechanic/Tourist
 
Join Date: Apr 2007
Location: Syracuse, NY
Posts: 7,510

Bikes: 2008 Novara Randonee - love it. Previous bikes:Motobecane Mirage, 1972 Moto Grand Jubilee (my fave), Jackson Rake 16, 1983 C'dale ST500.

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 477 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Not complicated at all, merely more accurate, and the term that is most commonly used. Shift and brake cables are comprised of multiple wires stranded together into a thicker cable. If electrically actuated derailleurs come into popular use then we will be talking about derailleur wires, though technically much electrical wiring is stranded.
__________________
There's no such thing as a routine repair.

Don't tell me what "should" be - either it is, it isn't, or do something about it.

If you think I'm being blunt take it as a compliment - if I thought you were too weak to handle the truth or a strong opinion I would not bother.

Please respect others by taking the time to post clearly so we can answer quickly. All lowercase and multiple typos makes for a hard read. Thanks!
cny-bikeman is offline  
Old 07-09-13, 05:00 PM
  #9  
gyozadude
Senior Member
 
gyozadude's Avatar
 
Join Date: Jun 2011
Location: Sunnyvale, California
Posts: 1,180

Bikes: Bridgestone RB-1, 600, T700, MB-6 w/ Dirt Drops, MB-Zip, Bianchi Limited, Nashbar Hounder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
The question I have is what happened between 3 weeks ago and now? When you took ownership of it, you must have ridden it around a little. Did it shift okay then? Since then, what has happened? And how do you test the gear shifting? Do you have a stand, or do you have someone lifting the end? Because flipping upside down so it rests on the handlebars sometimes can kinks cables. Typically, if it's just a cable tension issue, if you start both in 7 and 7, and shift to 6 but it stays in 7, then it should then shifter 5/gear 6, shifter 4/gear 5, and so on...

But if you're unable to get past gear 7 initially, and then it skips 2 and goes to 5 in the back, and then won't move to gear 4 and lower, then it sounds like something else.
gyozadude is offline  
Old 07-09-13, 05:06 PM
  #10  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 41,928

Bikes: 8

Mentioned: 188 Post(s)
Tagged: 0 Thread(s)
Quoted: 6833 Post(s)
Likes: 0
Liked 214 Times in 178 Posts
I didn't notice the issue until I compared the gear number on the shifter
to where the chain actually is after hearing an odd clicking sound.
the gear number on the lever is a gimmick, IMO ,index shifting is a gimmick too ,
but it did get people on bikes .


too bad people expect asking questions about sounds in a text medium think they will
describe things so clearly when they cannot.

rather than say 5, count the teeth on the chainrings and cogs, write that down.

a 42 by 18 gear has a definite meaning , a 2.333:1 ratio ..

5 says nothing ..

I'm so much better fixing things I can see in front of me , with my hands .

but this does kill time here . while I have audio on my computer.

Last edited by fietsbob; 07-09-13 at 05:11 PM.
fietsbob is offline  
Old 07-09-13, 05:30 PM
  #11  
cny-bikeman 
Mechanic/Tourist
 
Join Date: Apr 2007
Location: Syracuse, NY
Posts: 7,510

Bikes: 2008 Novara Randonee - love it. Previous bikes:Motobecane Mirage, 1972 Moto Grand Jubilee (my fave), Jackson Rake 16, 1983 C'dale ST500.

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 477 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Gyoza and I said pretty much the same thing - we need more info and it may be more than just cable tension.
__________________
There's no such thing as a routine repair.

Don't tell me what "should" be - either it is, it isn't, or do something about it.

If you think I'm being blunt take it as a compliment - if I thought you were too weak to handle the truth or a strong opinion I would not bother.

Please respect others by taking the time to post clearly so we can answer quickly. All lowercase and multiple typos makes for a hard read. Thanks!
cny-bikeman is offline  
Old 07-09-13, 05:34 PM
  #12  
ultraman6970
Senior Member
 
Join Date: Dec 2005
Posts: 7,859
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Don't want to sound mean but when riders cant even figure it out what do the cables are for, cant even follow the cable where it goes, cant figure it out how the shifters work, and start asking stuff here with almost no info then is better for them just take the bike to the shop and pay the 50 bucks to get it fixed.
ultraman6970 is offline  
Old 07-09-13, 06:10 PM
  #13  
Notgrownup
Senior Member
 
Notgrownup's Avatar
 
Join Date: Jun 2013
Location: Snow Hill NC
Posts: 872

Bikes: Trek Madone 2.1

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by ultraman6970 View Post
Don't want to sound mean but when riders cant even figure it out what do the cables are for, cant even follow the cable where it goes, cant figure it out how the shifters work, and start asking stuff here with almost no info then is better for them just take the bike to the shop and pay the 50 bucks to get it fixed.
THAT WOULD BE A BIG 10-4 there buddy...
Notgrownup is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Limp Jimmy
Australia - New Zealand
0
08-05-08 08:14 PM
barry.cohen
Tandem Cycling
0
06-28-08 09:41 PM
alicestrong
Southern California
0
04-02-08 09:24 AM
Eagle Kammback
Foo
0
12-30-07 12:46 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.