Originally Posted by
JanMM
Back away from the spoke protector - do not touch the spoke protector unless you swear that you understand why it was placed where it is and that you will maintain correct RD adjustment.
Note, however, that I'm living proof that it's possible to ride for 40 years on at least 15 bikes without a spoke protector, and without shifting the derailleur into the spokes.
Now that
PINGPINGPINGPING you hear tomorrow will be my derailleur going into the spokes. You don't need the thing if you maintain your bike, but it doesn't hurt anything and can prevent a minor disaster.