I took my bike for the first ride of the season yesterday and unfortunately it was pretty short. As I was cycling through the rear gears I hear a plinking sound and then a large clunk. I stopped immediately and went to inspect the back wheel where I saw the following carnage:
- The plastic shroud that holds the return spring for the lower pivot was broken and the spring had been ejected.
- The pulley cage was crushed
- Two spokes were damaged, one snapped at the base of the rim (nipple?) and another snapped off at the hub.
I suspect that happened where is the L limit screw was dialed in too far and the pulley cage was hitting on the spokes (thus the plinking sound) but when a spoke mounted reflector passed by it put enough force on the derailleur to break the shroud and mess up the pulley cage as well.
With the why and how aside I'm looking to repair the damage so I can go on cycling!
I'm fairly new to bicycle maintenance so I'm trying to understand this piece by piece. I obviously need a new derailleur, probably a higher quality one this time around. Is there anything a beginner should be aware of when buying a new one? Besides the minimum and maximum tooth sizes.
Secondly, is it possible to buy just a few replacement spokes (I've been mostly looking on Amazon Canada)? Should I replace all the spokes at the same time?