cny-bikeman

No, it's a little difficult due to the continued use of non-standard terms. but if I'm interpreting correctly the OP said it rubs when on the largest crank ring (chainwheel) and smallest sprocket (rear cog?), combo, which is the highest gear, and where one would adjust the outer limit screw, and also rubs when on the smallest chainwheel and largest rear cog, which is where one would adjust the inner limit.

CHSCHEN - would help if you confirmed the above. What you seem to be describing is rubbing when the front and rear are both all the way in and all the way out. If that is true then unscrew (counterclockwise) each limit screw 1/4 turn at a time until there is no rubbing in each of those positions. The highest gear (large front, small rear) may still rub with too much pedal pressure - that's your hint to downshift.

cranky old road 

cny you give good advice but I think you have an unfortunate typo here. "rub" not "run?"

Also I wish this site had a mechanism by which we could rate the quality of posters' advice, so the less experienced would have a basis for deciding whose advice to follow. Although in this thread it seems pretty obvious.

cny-bikeman

Thanks much - corrected.

BLYTZPK

the poster can grip the deray mount twisting it clockwise from above...that's the click.

for small CR/large cog. relative to cage sides.

but where should the cage be height wise at small CR/large cog ?

Andrew R Stewart 

The ft der cage outer plate's lower edge is usually placed 2-3mms above the large ring's teeth when the cage has been pivoted out so the outer plate is just even (as in being away from the frame the same amount) as the large ring is. The cage's height above the other rings is then a result of it's pivot geometry and the rings' tooth counts.

As i tried to explain before, the rotational alignment of the cage is usually that which has the cage's center line parallel with the ring's plane. Some slight rotation either way might be needed for best function over the entire range of the gears but this fine tuning is started with cage and rings being parallel.

I'm not too sure what the first line was about... "deray" and "click". Andy.

cny-bikeman

Hard to argue at this point

chschen

My husband just told me that we apparently adjusted it so that it's not rubbing on the largest chainwheel and smallest rear cog (the highest gear), but it does rub a little on the other side (when the front and rear are both all the way in). We've played with the limit screws so that they're at the very edge of their reaches, and it still unfortunately rubs. We've also adjusted the cord tension so much that we're afraid the cord is going to break at this point. :\

cny-bikeman

Logic and physics prevail when it comes to mechanical systems. If the cable is too tight the derailleur is never going to reach the inner limit. It's quite easy to see if the bottom of the inner limit screw is being contacted by the derailleur. If not then the cable is too tight. I'd strongly suggest you get some assistance at a shop or co-op.