On one of my current projects, I have a XTR rear mech set up with grip shift changers.
In a couple of gears, ie 2/3 and 5/6 the chain keeps jumping around from one gear into the other and back again and so on and on. It will not stay in the selected gear. Doesn't seem to matter which of the front rings then chain is on. In the other gears it is fine. Does the cable need tightening? Do I need a new rear mech? Could it be a cassette problem?
Any suggestions folks???
In a couple of gears, ie 2/3 and 5/6 the chain keeps jumping around from one gear into the other and back again and so on and on. It will not stay in the selected gear. Doesn't seem to matter which of the front rings then chain is on. In the other gears it is fine. Does the cable need tightening? Do I need a new rear mech? Could it be a cassette problem?
Any suggestions folks???