Bicycle Mechanics - How to trim the FD?

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View Full Version : How to trim the FD?


brianappleby
11-17-05, 12:37 AM
I'm running ultegra everything except a compact FSA crank.

When i'm in my highest gear, (big ring small cog) my chain rubs against the outside of my FD. The adjustment screw is already maxed out. If i physically pull on the chain a little bit it moves enough to clear the chain, but if i try to use the shift lever, it just moves a bit and then goes back.

Is there any way to adjust this without unscrewing the cable and tightening it? Maybe that wouldn't be too hard but i get the feeling that if i were to unscrew it i'd be opening a can of worms and would never get back to where i started.

Thanks for any ideas,
B.


Raiyn
11-17-05, 12:51 AM
http://www.parktool.com/repair/readhowto.asp?id=75

brianappleby
11-17-05, 01:07 AM
ok stupid me couldn't find the barrell adjuster since it wasn't attached to the deraileur.

disaster averted... sorry for the stupid question.


wile e. coyote
11-17-05, 12:11 PM
I'm running ultegra everything except a compact FSA crank.

but if i try to use the shift lever, it just moves a bit and then goes back.



don't forget about the first click trim on the shifter. Before the actual shift, theres a smaller click that moves the derailer a fraction. You shouldn't have to use the trim on a straight chain line, only when you're shifting to smaller cogs and the chain touches the FD. Just a thought, i'm sure you fixed the prob with the trims on the downtube cable stops.

-ned