Some
wheels are crap, some wheels are ace. If you have the latter, you shouldn't
have too much of a problem, but I always have problems with wheels + axles
particularly 10mm axles. Wheels: Every so often, my spokes think its funny to
get loose which results in a very horrible clunking sound. It sounds like
something is rattling around in the hub, but its not. Simple use a spoke key to
tighten any loose spokes first, then true the wheel. Other problems only
require a bit of obviouse thinking to repair.... failing that, replace it.
Axles: If there's one pain in the arse I got its axles. 10mm axles always bend
so obviously 14mm+ are preferred. When replacing axles, its always a good idea
to "measure" the distance that the cone + lock nut of one side is; which makes
it easier to get the axle central. Then grease up the cone nut, one side of the
hub, + the bearings. If you use a lot of grease, then your bike will become
very "slow" (cos there is so much grease), BUT it will only require attention
again in probably 10 years. Once one side is in, grease up the other hub side,
bearings and cone nut and screw the cone nut on. Don't do it too tight yet but
get it sort of close. Then screw the lock nut on again not tight. Now wipe your
hands! You need to get the cone nut tight enough so that the wheel doesn't
wobble, but loose enough so that it runs freeely. Some people spend an hour
doing this, so don't worry if it takes you a while too.