ok, thanks. if they are much louder then I'll stick with the plastic ones. both types seem to cost about the same, unless I'm looking at crappy alloy ones.yes, they do. They also make a lot more noise.
For how long plastic ones last, how easy they are to change, and how cheap they are, I'll never get another set of metal pulleys.
I switched to alloy ones and now every time I hit some rough there is so much jingling going on back there I keep checking my bike for something loose..ok, thanks. if they are much louder then I'll stick with the plastic ones. both types seem to cost about the same, unless I'm looking at crappy alloy ones.