Small chainring Large cog noise. Help out a desperate newbie plz
11-13-12, 02:12 PM
#1
Junior Member
Thread Starter
Join Date: Nov 2012
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Small chainring Large cog noise. Help out a desperate newbie plz
I have a 57.5cm Ritte Bosberg frame with Campy Chorus crank, chorus cassette, and chorus chain, all of which are 11 speed. They have about 400 miles on them.
Whenever I'm using small ring in the front, and large cogs (25t, 23t, 21t), it makes continuous clicking noise as the chain wraps around the chainring. Same thing happens on large ring with large cogs, but it's more pronounced on small ring.
I removed FD to rule it out as a cause and any kind of RD adjustment is to no avail. Crank spins fine without the chain, with no BB bearing issues.
Funny thing is, if I use my old Record 10 chain on otherwise all 11 speed group, it's silent (little noisy on the largest cog, but I can live with that)
Just for the heck of it, I switched back to 10 speed cassette with 11 speed chain, and clicking noise did not go away.
Tried two different chorus 11 chains, and all were noisy.
Maybe it's the width of 11 speed chain with tight tolerance causing the noise?
Anybody have a clue what the cause of this is?
Here's a link on youtube of my bike making noise.
https://youtu.be/iEL5mULAPQk
Whenever I'm using small ring in the front, and large cogs (25t, 23t, 21t), it makes continuous clicking noise as the chain wraps around the chainring. Same thing happens on large ring with large cogs, but it's more pronounced on small ring.
I removed FD to rule it out as a cause and any kind of RD adjustment is to no avail. Crank spins fine without the chain, with no BB bearing issues.
Funny thing is, if I use my old Record 10 chain on otherwise all 11 speed group, it's silent (little noisy on the largest cog, but I can live with that)
Just for the heck of it, I switched back to 10 speed cassette with 11 speed chain, and clicking noise did not go away.
Tried two different chorus 11 chains, and all were noisy.
Maybe it's the width of 11 speed chain with tight tolerance causing the noise?
Anybody have a clue what the cause of this is?
Here's a link on youtube of my bike making noise.
https://youtu.be/iEL5mULAPQk
11-13-12, 02:50 PM
#2
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,629
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3871 Post(s)
Liked 2,568 Times
in
1,579 Posts
The sound could be the angle of the chain -- the chain plates are hitting the chainring teeth first, then sliding down. Are you using the right BB length?
11-13-12, 03:29 PM
#3
Junior Member
Thread Starter
Join Date: Nov 2012
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
My frame came with BB30, and my LBS installed FSA BB30-BSA adapter to use with Campy BSA BB cups. Should I tighten the cup more to reduce the chain angle?
11-13-12, 06:37 PM
#4
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,629
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3871 Post(s)
Liked 2,568 Times
in
1,579 Posts
Not if it means taking it past the recommended torque. I hate it when my drivetrains are noisy, but I'd be inclined to leave it alone as long as the chain doesn't jump off the small chainring.
11-13-12, 06:56 PM
#5
Senior Member
Join Date: Jan 2011
Location: Northern CA
Posts: 517
Bikes: Pinarello Paris/Ui2, BMC TeamMachine SLR01/Campy Record EPS
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Take a look at where the top jockey pulley on the RD site in relation to the larger cassette cogs. Could be it's too close. Most RD's have some sort of "B" adjustment screw that allows you to position the pulley closer to or farther away from the cassette cogs. If yours is like most I've dealt with, turning that adjustment screw clockwise (moving the pulley farther away from the cassette) just might quiet things down a bit.
11-13-12, 08:26 PM
#6
Junior Member
Thread Starter
Join Date: Nov 2012
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
11-13-12, 08:27 PM
#7
Junior Member
Thread Starter
Join Date: Nov 2012
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Take a look at where the top jockey pulley on the RD site in relation to the larger cassette cogs. Could be it's too close. Most RD's have some sort of "B" adjustment screw that allows you to position the pulley closer to or farther away from the cassette cogs. If yours is like most I've dealt with, turning that adjustment screw clockwise (moving the pulley farther away from the cassette) just might quiet things down a bit.
Thread
Thread Starter
Forum
Replies
Last Post
vol
Bicycle Mechanics
5
11-03-13 10:36 PM
