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 https://cimg7.ibsrv.net/gimg/bikefor...393b7db510.jpg https://cimg9.ibsrv.net/gimg/bikefor...58585a6e22.jpg https://cimg1.ibsrv.net/gimg/bikefor...564d0f214a.jpg |
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.
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Originally Posted by lyle.coop
(Post 22220889)
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. |
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 |
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 |
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.
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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.
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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!!
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Man, I hope that chain is black by design. :twitchy:
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Originally Posted by WhyFi
(Post 22224027)
Man, I hope that chain is black by design. :twitchy:
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Originally Posted by lyle.coop
(Post 22224420)
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.
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. |
Originally Posted by lyle.coop
(Post 22224420)
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.
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Originally Posted by Sy Reene
(Post 22224599)
Great segue to a new topic! Please tell us what chain lube we evidently should be avoiding.
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Originally Posted by fujidon
(Post 22224554)
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. |
Originally Posted by lyle.coop
(Post 22224644)
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.
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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:lol:) but that could be wrong for some reason.:foo:
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