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

Carbon belt noise

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.

Carbon belt noise

Old 01-16-18, 04:24 PM
  #1  
valeriano
Member
Thread Starter
 
Join Date: Jul 2017
Posts: 41
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Carbon belt noise

Hello all,

my belt snapped a few days ago and I installed a new one today. After installing the belt, I cycled a few meters around the garage to test it and I noticed that the belt is doing some noise when I push the pedal down with relative strength.
If i push it softly this noise doesn't happen or if I push it hard with the tire in the air, it doesn't happen either. It happens only when I'm on top of the bike and pushing it hard.
I'm not sure if this is because the belt is new, or if it is sprocket alignment or anything else.

Here is how it sounds:

Anybody had this problem?

The belt is a Gates Carbon Drive CDX Centertrack-Belt with 118T.
valeriano is offline  
Old 01-16-18, 04:59 PM
  #2  
rydabent
Senior Member
 
rydabent's Avatar
 
Join Date: Apr 2010
Location: Lincoln Ne
Posts: 9,082

Bikes: RANS Stratus TerraTrike Tour II

Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 2439 Post(s)
Liked 731 Times in 433 Posts
You might have it over tight. Cog belts do not need to be drum tight.
rydabent is offline  
Old 01-17-18, 07:33 AM
  #3  
JonathanGennick 
Senior Member
 
JonathanGennick's Avatar
 
Join Date: Apr 2007
Location: Munising, Michigan, USA
Posts: 4,131

Bikes: Priority 600, Priority Continuum, Devinci Dexter

Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 685 Post(s)
Likes: 0
Liked 55 Times in 37 Posts
I had one make noise recently because my alignment was badly off. That was a consistent noise though. Yours is intermittent.
JonathanGennick is offline  
Old 01-17-18, 10:50 AM
  #4  
TireLever-07
Senior Member
 
Join Date: Sep 2005
Location: Malden, MA.
Posts: 402

Bikes: 2009 Masi, 2014 Specialized Crossroads 1975 Schwinn Unicycle

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
Hi, This bike under warranty, Valer? ___ The big selling point of the belt drive is less maintence, quieter. No derailler hanging halfway down to the pavement. And the best part is, no greasy right pants cuff. I'm into chains & derailers. My second city bike had a, triple crank, with a Shimano Mega Range Free wheel. It's first gear, lower than the diameter of its tires. Just for one hill, riding home. cheers CL
TireLever-07 is offline  
Old 01-18-18, 12:40 PM
  #5  
zebede
Hello
 
zebede's Avatar
 
Join Date: Aug 2007
Location: Suncoast, Florida
Posts: 915

Bikes: n+1

Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 105 Post(s)
Liked 20 Times in 18 Posts
goto gates website to learn how to set belt tension...


Photo & Video Gallery - Carbon Drive? In Action | Gates Carbon Drive?
zebede is offline  
Old 08-28-18, 03:16 PM
  #6  
minbikemaxfun
Junior Member
 
Join Date: Jul 2018
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Radial run-out?

Were you ever able to fix the noise? I have a belt rubbing noise on my CDX and the Gates representative says it might be "radial run-out", which means that the crank wheel might not be perfectly centered. As a result, tension in the belt will vary widely as I crank around the belt.
minbikemaxfun is offline  
Old 09-03-18, 02:03 AM
  #7  
valeriano
Member
Thread Starter
 
Join Date: Jul 2017
Posts: 41
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by minbikemaxfun View Post
Were you ever able to fix the noise? I have a belt rubbing noise on my CDX and the Gates representative says it might be "radial run-out", which means that the crank wheel might not be perfectly centered. As a result, tension in the belt will vary widely as I crank around the belt.
In my case it was basically belt tension. I fixed the tension and it runs smoothly again.
valeriano is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
tjharris
Hybrid Bicycles
8
08-06-21 09:58 AM
afhammad
Bicycle Mechanics
3
12-17-17 08:36 AM
dwightonabike
Bicycle Mechanics
3
01-23-16 11:53 AM
rms13
Singlespeed & Fixed Gear
22
09-16-13 09:31 PM
mburchard
Tandem Cycling
15
08-16-12 11:48 AM

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 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.