Originally Posted by
Bicycle...and D
I don't even know what a "dork disk" is. Does that mean I need one...or not?
I'm so easily confused. Maybe I am a dork disk.
Dork disc, those plastic, aluminum or chromed steel discs between the rear wheel spokes and the freewheel/cassette. Common on lesser derailleur bikes from the early '70s on. Their purpose is to keep the derailleur from hitting the spokes when either poorly adjusted or the derailleur hanger is bent. They may also keep the chain from falling into the gap between cog and hub or minimizes the subsequent damage if it does happen. Basically good, simple insurance that no respectable roadie would ever be caught dead with.
Ben