Originally Posted by
kaiserschmarrn
I am ok with installing and adjusting front derailleurs, but have never messed with rear derailleurs. I have found an intermittent issue with the rear derailleur. Sometimes when I am on the third gear from the top, then go to switch to the next gear, it makes two shifts at once, putting me in the highest gear. What adjustment is likely out and causing this?
Thanks,
Danny
To me it sounds like your indexing is off. Once you set your upper and lower limits you can shift up onto the 3rd from the smallest ring and if it is not smooth you adjust the barrel adjuster at the derailleur to get the indexing dialed in. I will twist it until it shifts and then dial it back to be quiet. Test between shifting back and forth between the 3rd and 4th smallest rings, once that is good, then try the entire range. If the indexing is slightly off, it will be jumpy as the chain can partially ride up another ring or down onto another ring.