Yesterday I cleaned and oiled my bike (gears, chain, moving parts) after I was done, however, I noticed that the wheels were making a weird grinding noise while I was riding.
After flipping the bike upside down, I discovered it to be the rear wheel only. After I took it off and removed the quick release skewer. While holding the nuts on the sides of the wheel and spinning the wheel, it still made the grinding sound, although there was no resistance. To be more specific, it is a bit like a grinding sound, but a bit like lots of ticking sounds. Hard to describe. I took a look at the ball bearings and nothing seems to be in there to cause the noise. The cones on the sides of the bearings did not solve the problem either.
Does anyone know how I could find out what is making this noise and how to kill it? I really appreciate it.