Go Back  Bike Forums > Bike Forums > Road Cycling
Reload this Page >

Chain rubs on front derailleur plate when in Large ring upfront

Notices
Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

Chain rubs on front derailleur plate when in Large ring upfront

Old 09-08-21, 10:21 AM
  #1  
lyle.coop
Senior Member
Thread Starter
 
Join Date: Jul 2021
Location: NYC
Posts: 91

Bikes: Canyon Ultimate CF SL Disc, Canfield Balance

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 45 Post(s)
Liked 13 Times in 12 Posts
Chain rubs on front derailleur plate when in Large ring upfront

My chain rubs on the front derailleur plate when i'm in the large ring upfront. Happens when I'm in the small cog in the back or somewhere in the middle of the cog stack.

How can I fix this?

Also, I just want to confirm that the limit screw closer to the frame is the small ring limit screw.

Bike is a 2005 Specialized allez comp double.

-Cassette10-speed, 11 - 23 teeth
CranksetFSA G-2, 39/53 teeth
Component GroupShimano Dura-Ace


lyle.coop is offline  
Old 09-08-21, 10:22 AM
  #2  
stevel610 
Senior Member
 
Join Date: Aug 2006
Location: Valley Forge: Birthplace of Freedom
Posts: 1,123

Bikes: Novara Safari, CAAD9, WABI Classic, WABI Thunder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 305 Post(s)
Liked 328 Times in 173 Posts
YouTube "front derailleur adjustment." You'll have to move the little screws shown on the top of the derailleur in the one of the pictures.
stevel610 is offline  
Likes For stevel610:
Old 09-08-21, 12:06 PM
  #3  
genejockey 
Klaatu..Verata..Necktie?
 
genejockey's Avatar
 
Join Date: May 2007
Location: SF Bay Area
Posts: 10,028

Bikes: Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace

Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 5412 Post(s)
Liked 5,664 Times in 2,888 Posts
Originally Posted by lyle.coop View Post
My chain rubs on the front derailleur plate when i'm in the large ring upfront. Happens when I'm in the small cog in the back or somewhere in the middle of the cog stack.

How can I fix this?
Unscrew the 'high' limit screw with the FD in the big ring and the RD on the smallest cog till it clears. Then you may need to add tension to the cable so that it swings that far when you shift.

Also, I just want to confirm that the limit screw closer to the frame is the small ring limit screw.
If you can't figure it out any other way, drop the FD to the small ring and work the little lever on the STI to make sure that it's as low as it goes. The cable should have just a little slack. While watching the FD cage, unscrew half a turn, and see if the cage moves toward the frame. If yes, adjust it. If not, turn it back to where it was and try the other one. I'm pretty sure, based on how these things work, that you're correct about which screw is which.
__________________
"Don't take life so serious-it ain't nohow permanent."

"Everybody's gotta be somewhere." - Eccles
genejockey is online now  
Old 09-08-21, 12:27 PM
  #4  
datlas 
Beyond Bogus
 
datlas's Avatar
 
Join Date: Dec 2007
Location: Malvern, PA (20 miles West of Philly)
Posts: 37,649

Bikes: 1986 Alpine (steel road bike), 2009 Ti Habenero, 2013 Specialized Roubaix

Mentioned: 519 Post(s)
Tagged: 2 Thread(s)
Quoted: 17464 Post(s)
Liked 4,801 Times in 2,326 Posts
Trim is your friend.

edit: maybe not unless you already pushed the FD lever a smidge to the inside. If not, then you do need to adjust limit screw
__________________
Originally Posted by rjones28 View Post
Addiction is all about class.
datlas is offline  
Likes For datlas:
Old 09-08-21, 12:37 PM
  #5  
cyclezen
OM boy
 
cyclezen's Avatar
 
Join Date: Jul 2005
Location: Goleta CA
Posts: 3,712

Bikes: a bunch

Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 262 Post(s)
Liked 255 Times in 178 Posts
You might also check the FD cage alignment. From the images it appears off a bit.
that, for sure, can be cause of rubbibg.
thx Yuri
cyclezen is offline  
Likes For cyclezen:
Old 09-08-21, 12:45 PM
  #6  
curbtender
Senior Member
 
curbtender's Avatar
 
Join Date: Mar 2007
Location: SF Bay Area, East bay
Posts: 7,342

Bikes: Marinoni, Kestral 200 2002 Trek 5200, KHS Flite, Koga Miyata, Schwinn Spitfire 5, Schwinn Speedster, Mondia Special, Univega Alpina, Miyata team Ti, MB3

Mentioned: 44 Post(s)
Tagged: 0 Thread(s)
Quoted: 1147 Post(s)
Liked 974 Times in 583 Posts
Before you screw with the screw limits, pull on the cable and see if it moves further out. You may just need a cable adjustment.
curbtender is offline  
Likes For curbtender:
Old 09-08-21, 03:37 PM
  #7  
shelbyfv
Senior Member
 
shelbyfv's Avatar
 
Join Date: Jun 2007
Location: TN
Posts: 10,039
Mentioned: 32 Post(s)
Tagged: 0 Thread(s)
Quoted: 2970 Post(s)
Liked 3,753 Times in 1,931 Posts
Not that it matters but it's an Ultegra derailleur, not DA. Your H limit screw is all the way in so good chance that is the problem. Loosen it a turn and see if that resolves it. If not, start over from scratch with FD height, alignment, etc. Follow the instructions in order.
shelbyfv is offline  
Likes For shelbyfv:
Old 09-10-21, 09:22 AM
  #8  
lyle.coop
Senior Member
Thread Starter
 
Join Date: Jul 2021
Location: NYC
Posts: 91

Bikes: Canyon Ultimate CF SL Disc, Canfield Balance

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 45 Post(s)
Liked 13 Times in 12 Posts
The FD cage was slightly twisted. I twisted it just a hair - that solved 75% of the rub. The rest was just loosening the limit scew. Thanks guys!!
lyle.coop is offline  
Likes For lyle.coop:
Old 09-10-21, 09:32 AM
  #9  
WhyFi
Senior Member
 
WhyFi's Avatar
 
Join Date: Jan 2010
Location: TC, MN
Posts: 37,873

Bikes: R3 Disc, Haanjo

Mentioned: 352 Post(s)
Tagged: 1 Thread(s)
Quoted: 19394 Post(s)
Liked 7,964 Times in 4,016 Posts
Man, I hope that chain is black by design.
WhyFi is online now  
Old 09-10-21, 01:16 PM
  #10  
lyle.coop
Senior Member
Thread Starter
 
Join Date: Jul 2021
Location: NYC
Posts: 91

Bikes: Canyon Ultimate CF SL Disc, Canfield Balance

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 45 Post(s)
Liked 13 Times in 12 Posts
Originally Posted by WhyFi View Post
Man, I hope that chain is black by design.
Yeah it's weird. I cleaned the bike maybe 150 miles ago and it picked up all this dirt. I cleaned it with simply green and got everything back to silver. Maybe it's the lube I'm using on my chain.
lyle.coop is offline  
Old 09-10-21, 02:56 PM
  #11  
fujidon
Senior Member
 
fujidon's Avatar
 
Join Date: Aug 2020
Location: central NJ
Posts: 132

Bikes: Fuji Pro, Raleigh Team, touring bike, hybrid

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 69 Post(s)
Liked 61 Times in 36 Posts
Originally Posted by lyle.coop View Post
Yeah it's weird. I cleaned the bike maybe 150 miles ago and it picked up all this dirt. I cleaned it with simply green and got everything back to silver. Maybe it's the lube I'm using on my chain.
If it picked up that much dirt in just 150 miles, then yes, it could be your choice of lube, but I think it's more likely that it's a case of too much lube.

I lube my chains the day before a ride or just after a ride with the smallest amount that I think will do the job. I choose to lube my chain well before using on the theory (possibly wrong) that the lube will have time to seep into the rollers better and let to allow any evaporative solvents to, uh... evaporate.

I also thoroughly wipe off the chain after lubing because there's no need for any lube on the exterior surfaces.
fujidon is offline  
Likes For fujidon:
Old 09-10-21, 03:35 PM
  #12  
Sy Reene
Advocatus Diaboli
 
Sy Reene's Avatar
 
Join Date: Feb 2015
Location: Wherever I am
Posts: 7,761

Bikes: Merlin Cyrene, Nashbar steel CX

Mentioned: 12 Post(s)
Tagged: 1 Thread(s)
Quoted: 4175 Post(s)
Liked 1,168 Times in 766 Posts
Originally Posted by lyle.coop View Post
Yeah it's weird. I cleaned the bike maybe 150 miles ago and it picked up all this dirt. I cleaned it with simply green and got everything back to silver. Maybe it's the lube I'm using on my chain.
Great segue to a new topic! Please tell us what chain lube we evidently should be avoiding.
Sy Reene is offline  
Old 09-10-21, 04:06 PM
  #13  
lyle.coop
Senior Member
Thread Starter
 
Join Date: Jul 2021
Location: NYC
Posts: 91

Bikes: Canyon Ultimate CF SL Disc, Canfield Balance

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 45 Post(s)
Liked 13 Times in 12 Posts
Originally Posted by Sy Reene View Post
Great segue to a new topic! Please tell us what chain lube we evidently should be avoiding.
Tri-Flow Superior Lubricant Drip Bottle
lyle.coop is offline  
Old 09-10-21, 04:08 PM
  #14  
lyle.coop
Senior Member
Thread Starter
 
Join Date: Jul 2021
Location: NYC
Posts: 91

Bikes: Canyon Ultimate CF SL Disc, Canfield Balance

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 45 Post(s)
Liked 13 Times in 12 Posts
Originally Posted by fujidon View Post
If it picked up that much dirt in just 150 miles, then yes, it could be your choice of lube, but I think it's more likely that it's a case of too much lube.

I lube my chains the day before a ride or just after a ride with the smallest amount that I think will do the job. I choose to lube my chain well before using on the theory (possibly wrong) that the lube will have time to seep into the rollers better and let to allow any evaporative solvents to, uh... evaporate.

I also thoroughly wipe off the chain after lubing because there's no need for any lube on the exterior surfaces.
I dont put a ton on. I just run the chain and slowly drip some on. Then shift thru the cogs. After that I wipe off the chain.
lyle.coop is offline  
Old 09-10-21, 04:13 PM
  #15  
cxwrench
Senior Member
 
cxwrench's Avatar
 
Join Date: Jul 2013
Location: Nor-Cal
Posts: 2,860

Bikes: lots

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 1404 Post(s)
Liked 1,952 Times in 1,036 Posts
Originally Posted by lyle.coop View Post
I dont put a ton on. I just run the chain and slowly drip some on. Then shift thru the cogs. After that I wipe off the chain.
You're doing it wrong. Do NOT shift until you've wiped the excess off. You don't want lube on the cogs. It's called 'chain lube' for a reason.
cxwrench is offline  
Likes For cxwrench:
Old 09-10-21, 05:35 PM
  #16  
shelbyfv
Senior Member
 
shelbyfv's Avatar
 
Join Date: Jun 2007
Location: TN
Posts: 10,039
Mentioned: 32 Post(s)
Tagged: 0 Thread(s)
Quoted: 2970 Post(s)
Liked 3,753 Times in 1,931 Posts
You may have to wipe after each ride for awhile until the excess is gone. I usually wipe the chain either before or after each ride (What Did You Do To Your Bike Today) but that could be wrong for some reason.
shelbyfv is offline  
Likes For shelbyfv:

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.