I was just taking my first serious stab at really getting my derailleurs adjusted. Shifting just didn't seem "clean". I used the instructions in the "Bicycling" maintenance issue of a couple of months ago. Ran into some snags, due mostly to my lack of experience, though things seem pretty good. Still have some questions.
Front derailleur - Checked and adjusted inner and outer limits. I think my large chainring may be a little bent. I did have a crash a few months ago. Even as far as the outer limit adjustment will go when the chain is on biggest ring/smallest cog, the chain ticks the derailleur in one area, while the rest of the chainring the chain is 2-3 mm away. I clamped a little stick in place as an indicator to make sure the "wobble" is in the chainring and not just the chain moving around. It does seem to be a section of the ring, not just one bent tooth. So can I straighten this thing. This is a lowend Suntour crankset with riveted rings so I can't just replace the chainring. This is not a burning issue since I seldom use the big ring/small cog combination. Any comments/suggestions would be welcome, though.
Rear derailleur - My lowend rear der does not have a tension adjustment screw, just the clamp bolt. So I couldn't adjust exactly as described. after several attempts that resulted in too tight with not enough loosening adjustment in the adjuster on the grip shift and vice versa, a lot of things worked fine on the workstand but not on the road. Usually, shifting was slick going smaller to larger cogs, but often difficult to get to shift from larger to smaller. I finally got pretty good results as follows. Chain on big ring/small cog. Screw adjuster on grip shift all the way in. Back off 30 clicks (about three full turns). Loosen cable clamp bolt on der. Take up slack and tighten clamp bolt. Go for a ride. Move shifter from 1 to 2 (no shift). Turn adjuster in until shift occurs. Tweak until shifts are as smooth as possible. This required taking up 29 of the 30 aforementioned clicks. Shifting seems pretty good, about as smoother or slightly smoother that it has ever been, though I am still not totally thrilled. Sigh. I guess you can't get those Campy snick, snick shifts out of lowend parts. Anyway, does this approach seem reasonable? Suggestions for smoother shifts, short of new derailleur, shifter, etc.? Oh, new bike, pretty well maintained, just over 1000 miles. Wear probably not an issue. Shifting has never been anything but adequate. SRAM 5.0 derailleur, SRAM Grip Shift, Shimano HG cassette, chain unknown, maybe SRAM. Each link has what appears to be a Z in it. Again, any comments/suggestions would be appreciated.