I bought a bike recently on Ebay, and it was shipped cross country. My brother basically put it all together for me, and tuned things so that they'd work.
However, if I were on my lower chainring, and in the smallest back gear (the configuration which makes the chain stretch as far diagonally as possible) I could hear a little rattle as the chain would rub against the front deraileur.
I read about tuning at http://www.parktool.com/ and suffice to say I messed up the gearing so that on some gears the rear deraileur seemed undecided. It'd drop down and come back up on the same gear repeatedly, but only on certain gears. Not all of them.
I got my brother to look at it again, and he's gotten it pretty much back to before I messed it up, but now there's another issue. When I shift the front deraileur over, I have to take two attempts at it. Before I could just push my shifter as deep as it'd go, and it'd push up onto the big chainring. Then, I could pop it off with one press of the downshifter. Now, I have to push the shifter as deep as it'll go, and that starts the shifting, but if I don't take another stroke at it the chain stays in limbo between rings. The same double-take is needed to downshift.
Obviously having a perfect tune is ideal, but I'm okay with things as they are. My question is, is this type of issue going to cause bigger problems if not corrected? Is anything wearing out if I have to shift twice to make one move on the chainring?
However, if I were on my lower chainring, and in the smallest back gear (the configuration which makes the chain stretch as far diagonally as possible) I could hear a little rattle as the chain would rub against the front deraileur.
I read about tuning at http://www.parktool.com/ and suffice to say I messed up the gearing so that on some gears the rear deraileur seemed undecided. It'd drop down and come back up on the same gear repeatedly, but only on certain gears. Not all of them.
I got my brother to look at it again, and he's gotten it pretty much back to before I messed it up, but now there's another issue. When I shift the front deraileur over, I have to take two attempts at it. Before I could just push my shifter as deep as it'd go, and it'd push up onto the big chainring. Then, I could pop it off with one press of the downshifter. Now, I have to push the shifter as deep as it'll go, and that starts the shifting, but if I don't take another stroke at it the chain stays in limbo between rings. The same double-take is needed to downshift.
Obviously having a perfect tune is ideal, but I'm okay with things as they are. My question is, is this type of issue going to cause bigger problems if not corrected? Is anything wearing out if I have to shift twice to make one move on the chainring?