Notices
Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

Chain Problem

Old 10-18-14, 12:49 AM
  #1  
Senior Member
Thread Starter
 
Bakersb's Avatar
 
Join Date: Mar 2013
Posts: 132
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Chain Problem

I believe this is the appropriate forum to post this in, as this is a problem specific to fixed gears.

So on my bike, I just bought a new chain. Its a KMC black chain, 1/8. My old chain was a silver 1/8. My chainring and cog are completely the same (Sugino Mighty Comp 52t and phil wood 17t). I adjusted the chain length to be as close as possible to my old chain (although the old chain had a few mm of stretch).

When I put on my new chain, I tensioned the chain it exactly as before, with a noticeable amount of small slack. It is definitely not too tight. However, when I pedal or accelerate in any direction(pulling up, pushing down), the chain makes a terrible noise that is ridiculously loud and sounds like something is scraping. However, when I put my bike on my stand, give one pedal stroke, and let it pedal by itself- it is completely silent. This noise seems to only happen when there is pressure placed onto the drivetrain (accelerating on pedal strokes). I've googled this problem, and it supposedly seems to be a chainline problem. But my chainline was fine with my previous chain that was the exact same size. Whats up with that?

My chainline is the exact same, it seems good enough. The chain is the exact same size and length as the chain before. The tension is not too tight, and has noticeable slack. How did this new problem occur?
Bakersb is offline  
Old 10-18-14, 01:34 AM
  #2  
Senior Member
 
seau grateau's Avatar
 
Join Date: Sep 2009
Location: PHL
Posts: 9,948

Bikes: Litespeed Catalyst, IRO Rob Roy, All City Big Block

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1332 Post(s)
Liked 398 Times in 194 Posts
New and old drivetrain parts tend to take a while to get to know each other. It'll probably quiet down as it wears in.
seau grateau is offline  
Old 10-18-14, 01:54 AM
  #3  
Senior Member
Thread Starter
 
Bakersb's Avatar
 
Join Date: Mar 2013
Posts: 132
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by seau grateau
New and old drivetrain parts tend to take a while to get to know each other. It'll probably quiet down as it wears in.
You think so? I thought maybe it was this, but the noise is ridiculously loud and I feel the creaks in my feet! Thanks for the advice.
Bakersb is offline  
Old 10-18-14, 02:01 AM
  #4  
Grumpy Old Bugga
 
europa's Avatar
 
Join Date: Oct 2006
Location: Adelaide, AUSTRALIA
Posts: 4,229

Bikes: Hillbrick, Malvern Star Oppy S2, Europa (R.I.P.)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 370 Post(s)
Likes: 0
Liked 8 Times in 6 Posts
Sometimes things are just noisy. Lube it, ride it, eventually you'll most likely realise either it's quiet or you don't notice it any more. At the end of the day, chains are cheap.
europa is offline  
Old 10-18-14, 02:21 AM
  #5  
Senior Member
Thread Starter
 
Bakersb's Avatar
 
Join Date: Mar 2013
Posts: 132
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by europa
Sometimes things are just noisy. Lube it, ride it, eventually you'll most likely realise either it's quiet or you don't notice it any more. At the end of the day, chains are cheap.
Sorry if I'm repetitive, but- Is it bad if I can actually feel the creaking? Every pedal stroke, I feel as though the chain is rubbing against something terrible, and I can feel the creaks on my pedals. But nothing is creaking. The problem is... I'm actually scared to ride it for a longer distance .

I will lube it and ride it out a bit and update tomorrow. Thanks for the input!
Bakersb is offline  
Old 10-18-14, 03:50 AM
  #6  
Senior Member
 
mihlbach's Avatar
 
Join Date: Dec 2005
Location: Long Island, NY
Posts: 6,645
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 115 Post(s)
Liked 127 Times in 68 Posts
Sounds like your cog is worn. A "stretched" chain accelerates the wear of your other drive train components. A new chain will not interface properly with a worn cog. A new cog will almost certainly solve your problem. From now on, change your chain when 12 links measure 12 1/16", and your drive train will last much longer.
mihlbach is offline  
Old 10-18-14, 09:14 AM
  #7  
Senior Member
 
UltraManDan's Avatar
 
Join Date: Sep 2014
Location: Gainesville, FL
Posts: 408

Bikes: 2015 Aventon Diamond

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 151 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
Did you lube your new chain really well before riding? I just replaced BB, cranks and chainring and noticed the same exact noise after leaving the shop. The next day I lubed it up really well and it is super quiet now. Just needed more lube on the chain after putting new parts on.
UltraManDan is offline  
Old 10-18-14, 10:10 AM
  #8  
Senior Member
Thread Starter
 
Bakersb's Avatar
 
Join Date: Mar 2013
Posts: 132
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by mihlbach
Sounds like your cog is worn. A "stretched" chain accelerates the wear of your other drive train components. A new chain will not interface properly with a worn cog. A new cog will almost certainly solve your problem. From now on, change your chain when 12 links measure 12 1/16", and your drive train will last much longer.
This was that I was afraid to hear.

My phil wood cog :'(. Thanks. will do.
Bakersb is offline  
Old 10-18-14, 10:43 AM
  #9  
Senior Member
Thread Starter
 
Bakersb's Avatar
 
Join Date: Mar 2013
Posts: 132
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts

Yep.. Found the culprit.
Bakersb is offline  
Old 10-18-14, 10:47 AM
  #10  
Veteran Racer
 
TejanoTrackie's Avatar
 
Join Date: Jul 2009
Location: Ciudad de Vacas, Tejas
Posts: 11,760

Bikes: 32 frames + 80 wheels

Mentioned: 26 Post(s)
Tagged: 0 Thread(s)
Quoted: 1337 Post(s)
Liked 766 Times in 432 Posts
Major sharktooth wear on that cog. Your chainring may be badly worn as well.
__________________
What, Me Worry? - Alfred E. Neuman

Originally Posted by Dcv
I'd like to think i have as much money as brains.
I see the light at the end of the tunnel, but the tunnel keeps getting longer - me
TejanoTrackie is offline  
Old 10-18-14, 10:49 AM
  #11  
Senior Member
Thread Starter
 
Bakersb's Avatar
 
Join Date: Mar 2013
Posts: 132
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
The chainring seems to be okay, but the cog seems to be terrible now. Will replace asap.
Bakersb is offline  
Old 10-18-14, 11:00 AM
  #12  
Your cog is slipping.
 
Scrodzilla's Avatar
 
Join Date: May 2009
Posts: 26,053
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 640 Post(s)
Liked 100 Times in 58 Posts
Phil cogs suck. Get an EAI.
Scrodzilla is offline  
Old 10-18-14, 11:24 AM
  #13  
Senior Member
 
seau grateau's Avatar
 
Join Date: Sep 2009
Location: PHL
Posts: 9,948

Bikes: Litespeed Catalyst, IRO Rob Roy, All City Big Block

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1332 Post(s)
Liked 398 Times in 194 Posts
Damn, that cog is nassssty.
seau grateau is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
sinikl
Singlespeed & Fixed Gear
18
04-17-13 01:46 PM
ganapati
Singlespeed & Fixed Gear
6
07-19-12 07:56 AM
whitekimchee
Singlespeed & Fixed Gear
22
05-31-10 11:01 AM
firetwofire
Singlespeed & Fixed Gear
6
03-22-10 05:50 PM
EveryManALion
Singlespeed & Fixed Gear
12
03-16-10 09:35 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
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.