Originally Posted by shundaroni

In an effort to learn, I tried removing and reinstalling my rear wheel (had never tried it since I got my bike a week or so ago). I shifted on to the smallest cog in back and the smallest ring in front (for slack, according to the site I visited), and removed the wheel. No problem.

So, I reinstall it, but this time the quick-release seems a bit tighter than it was before (tougher to close), but I think nothing of it. The wheel rotates without rubbing the brakes, so I'm feeling fine.

Then I try shifting through the gears, and on the large ring my front derailleur rubs the outside of the chain in several gears.

Before I tried this, there was NO chain rub.

What the hell have I done, and how do I fix it?