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

Folding bike maintanance

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.

Folding bike maintanance

Old 03-21-20, 07:03 AM
  #1  
mov
Newbie
Thread Starter
 
Join Date: Mar 2020
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Folding bike maintanance

Hello,



I have a tern c7 link folding bike that I bought a couple of months ago and I have a couple of questions about the maintanance and the bike itself.


1. I found a couple of videos online on how to adjut the limit screws and index the gears but when i try to do it it seems that it has no feedback I tried using the barrel adjuster but it has no feedback regardless of how much i move it. The movement of the barrel adjuster seems slow and vague almost like it threded wrong. do i need more tension on the cable ? would it help if I removes the whole rear derailleur and clean it and regrease it? ( it makes a wierd noise) do I need to take the chain off to do that ?


2. this is my first folding bike I live in london and space and storage is a problem. But also it seems like a spin a lot more than a regular bike it always feels like I'm in the wrong gear or very close to the right one its hard to explain. Is that normal with folding bikes ? should I consider a single speed for less maintenance ? I work in the kitchen and sometimes I do 16 hour shifts and the last thing I need to worry is the bike itsel not working wright.



The reason I trying to do this myself is that in lodon it costs between 25-35 gbp to service your gears witch I think is a bit to much. X_X

edit: so I cant post urls atm. the rear derailleur model is shimano tourney
mov is offline  
Old 03-21-20, 07:06 AM
  #2  
rhenning
Senior Member
 
Join Date: Apr 2006
Posts: 3,471
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 318 Post(s)
Likes: 0
Liked 46 Times in 33 Posts
I might suggest you move this to the Folding Bike Forum. You will get good answers and maybe better answers there. Roger
rhenning is offline  
Old 03-21-20, 07:27 AM
  #3  
lubloi
Senior Member
 
Join Date: Nov 2017
Posts: 76

Bikes: Koga Miyata Adventure 1992, Giant Terrago 1993, Trek Singletrack 970 1992, Presto Amsterdam 1975(?), Dahon Classic III Stainless

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 29 Post(s)
Liked 19 Times in 13 Posts
Does your bike only have a rear derailer, and no front derailer? Just trying to exclude the possibility that you're using the wrong barrel adjuster.

If you're positive that you're turning the barrel adjuster of the cable that goes to the rear derailer (and not the one of the brake cable or the front derailer), then the next thing to do is to shift the bike to one of the middle gears. If the bike is in the highest or lowest gear, perhaps you're not seeing any movement because the derailer is already hitting the limit screw, that's why it's important to use a middle gear.

I always turn the bike upside down, put it in one of the middle gears, and check whether the derailer jockey wheel is in the same plane as the cog. If it's slightly to the side, I adjust the barrel adjuster until it's in the same plane.

Funny noises coming from the rear derailers are usually caused by a lack of lubrication of the jockey wheels. It's not very difficult to remove, clean, and oil the jockey wheel bushings (it's a good idea to remove just one at a time).
lubloi is offline  
Old 03-21-20, 07:46 AM
  #4  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 7,545

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

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1150 Post(s)
Liked 537 Times in 388 Posts
Well, you shouldn't need to do anything with limit screws unless something on your bike changes, but since you have you will need to get them readjusted properly. I would suggest following this procedure step by step from the beginning, without skipping any steps. https://www.parktool.com/blog/repair...eur-adjustment Don't go to the next step until you are satisfied that you have gotten the current one right, as they depend upon the previous steps being done right. Once you get things set up right.leave your limit screws alone. Only a slight indexing adjustment should be needed from time to time.
dsbrantjr is offline  
Likes For dsbrantjr:
Old 03-21-20, 08:43 AM
  #5  
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Posts: 29,925

Bikes: Catrike 559 I own some others but they don't get ridden very much.

Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1444 Post(s)
Liked 351 Times in 216 Posts
Originally Posted by dsbrantjr View Post
Well, you shouldn't need to do anything with limit screws unless something on your bike changes, but since you have you will need to get them readjusted properly. I would suggest following this procedure step by step from the beginning, without skipping any steps. https://www.parktool.com/blog/repair...eur-adjustment Don't go to the next step until you are satisfied that you have gotten the current one right, as they depend upon the previous steps being done right. Once you get things set up right.leave your limit screws alone. Only a slight indexing adjustment should be needed from time to time.
There is an art to obtaining mechanical advice on this forum. Part of that art evaluating the advice provider. Some are much better than others. disbrantjr is, in my opinion, one of the better ones.
__________________
My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.
Retro Grouch is offline  
Likes For Retro Grouch:
Old 03-21-20, 08:59 AM
  #6  
JanMM
rebmeM roineS
 
JanMM's Avatar
 
Join Date: Jan 2006
Location: Metro Indy, IN
Posts: 15,884

Bikes: RANS V3 ti, RANS V-Rex, RANS Screamer

Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 564 Post(s)
Liked 183 Times in 121 Posts
Originally Posted by dsbrantjr View Post
Well, you shouldn't need to do anything with limit screws unless something on your bike changes, but since you have you will need to get them readjusted properly. I would suggest following this procedure step by step from the beginning, without skipping any steps. https://www.parktool.com/blog/repair...eur-adjustment Don't go to the next step until you are satisfied that you have gotten the current one right, as they depend upon the previous steps being done right. Once you get things set up right.leave your limit screws alone. Only a slight indexing adjustment should be needed from time to time.
Agree that the Park Tool derailleur adjustment info is very helpful.
__________________
Bacchetta Giro A20, RANS V-Rex, RANS Screamer
JanMM is online now  
Old 03-21-20, 09:26 AM
  #7  
mov
Newbie
Thread Starter
 
Join Date: Mar 2020
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Yeah but nothing described in any video or tutorial goes like that when i try it it feels stiff and crossthreaded and dosent really move the direalleur at all the barrel adjuster. I tried turning the limit screw according to the tutorial it still dosent go on the smallest cog the bike is a one by. I'm just waisting my time with this im going to pay the money to a mechanic sell it buy a single speed bikes should be easy and fun not crap parts and multi tools that dont really work. Thank you for your help but I think i give up on this.

Last edited by mov; 03-21-20 at 09:54 AM.
mov is offline  
Old 03-22-20, 07:27 AM
  #8  
zebede
Hello
 
zebede's Avatar
 
Join Date: Aug 2007
Location: Suncoast, Florida
Posts: 880

Bikes: n+1

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 98 Post(s)
Liked 13 Times in 12 Posts
You idea of consulting a pro or knowledgeable friend is a good idea. But don't give up!

Your Tern is decently equipped and worthy of further effort.
I think we all have experienced frustration when "what should work doesn't"
if you lived near me I would say bring it over and lets take a look at. It can be a adjusted/fixed to provide reliable shifting. Multi-gear bikes are GREAT!

Good luck,

Last edited by zebede; 03-22-20 at 01:02 PM.
zebede is offline  

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 - Do Not Sell My Personal Information -

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