Originally Posted by
vermilionx
yes, i have switched wheels.
ok... i seem to have fixed the problem with by messing with the high low screw in combination with that barrel adjuster thing. it's shifting good for now but this is just from shifting with the bike upside down (i don't have a workstand) so i dunno if real road shifting will be any different.
i will check that park tools and sheldon brown as well if i still get problems... or i'll swing by my LBS on friday.
thanks.
You can easily mess up the settings enough that when you shift to the biggest cog, your derailleur's pulley cage catches a spoke. Then the derailleur is mangled, ripped off the frame, and your rear wheel is locked up. Hopefully, you don't crash.
The Park Tool website shows how to start at the beginning, setting the limits correctly, and getting the shifts to work perfectly. It's not hard to do, and it's easy to understand once you've done it the first time.
It's worth knowing so that, in the future, when the shifting starts to be a little off, you can fix it in a few minutes.