Originally Posted by
Turtle Speed
I have a 7-speed bike whose FD I adjusted, but I'm still having problems. When the chain is on the middle chainring, I get rubbing on the inside of the FD cage when the bike is in 1st and 2nd gear. When it's in 6th and 7th, I get rubbing on the outside of the FD cage.
Does this mean my chainrings are out of true?
Chainwheels out of true would mean rubbing only at certain points in the rotation. If that is occuring then yes, that is at least part of the problem. However most indexed systems have a "trim" position, engaged with just enough lever movement to get a small cick, that moves the front derailleur slightly without performing a full shift. It's function is to avoid the problem you are having. The key is that the primary adjustment has to first be correct, so go through the Park procedure completely.